JP2003348326A - Document image conversion method, document image conversion program and document image converting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a document image conversion method, a document, image conversion program and a document image converting apparatus for displaying a document image on a miniaturized display part with excellent decoding property. <P>SOLUTION: When aligning and outputting an input document image inputted from an image input part 21, in a document image converting apparatus 1, line segmenting processing is applied to the input document image by a line segmenting part 24 to create a line image, and the created line images are connected to create an output image. Thus, a conversion wherein a change is added to contents like a case using an OCR is avoided and while sensing information such as background attached to a document, and the document image is efficiently displayed on a device such as a PDA with a limited display area, so that the number of output images is increased and visibility is improved as well. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document image conversion method, a document image conversion program, and a document image conversion device. More specifically, the present invention relates to a document for displaying a document image on a small-sized display section with good readability. The present invention relates to an image conversion method, a document image conversion program, and a document image conversion device.

[0002]

2. Description of the Related Art Recently, personal digital assistants (PDAs) and im-
Small portable terminals such as ode (registered trademark) have become widespread.

However, in such a portable terminal,
When referring to a document (original) printed on paper, if the scanned image of the original is displayed on the display of the mobile terminal as it is in accordance with the display resolution of the mobile terminal, the characters often become smaller. , Can not read.

On the other hand, if an image is scanned at a resolution that allows characters to be read, the image becomes large and cannot be displayed on the display unit of the portable terminal as it is. In this case, if a large image is divided and displayed, switching of screens or the like frequently occurs in order to understand the document, which increases the burden on the user and greatly reduces readability.

[0005] One of the methods for solving these problems is, for example, a method of recognizing a scanned image using OCR (character recognition device / software), reading the image as text data on a portable terminal, and displaying it. There is.

[0006]

SUMMARY OF THE INVENTION However, OCR
In the case of recognizing an image scanned by using OCR, the performance of OCR is not always perfect today, a certain degree of erroneous recognition occurs, and there is a problem that the usability is poor.

Conventionally, various proposals for shaping and outputting a character string in a line for a handwritten character document have been made, and the present applicant has also made various proposals. For example, Japanese Patent No. 2948840, Patent No. 3
[0019] Japanese Patent Publication No. 001950 proposes a method for obtaining a connected component of a black pixel in an image and a circumscribed rectangle thereof.
Japanese Patent No. 2895122 and Japanese Patent No. 2991761 propose a method of cutting out a row image. Further, Japanese Patent Application Laid-Open No. Hei 9-104637 proposes a method of cutting out a character image.
No. 0 proposes a method of giving a reading order to a line.

However, in these prior arts, a shaping method for each character in a line has been proposed, but the handling of line images is not mentioned. It cannot be used for display processing to a section.

Accordingly, the present invention provides a document image conversion method for performing conversion processing at an image level without using an OCR to generate a highly readable image that can be displayed on a small display unit such as a portable terminal. It is an object to provide a document image conversion program and a document image conversion device.

More specifically, according to the first aspect of the invention, when the input document images are aligned and output, the input document image is subjected to line cutout processing to generate a line image, and the generated line image is generated. To generate an output image by connecting the PDA and the like, while avoiding a conversion that changes the content as in the case of using the OCR, and allowing information accompanying the document such as the background to be perceived. An object of the present invention is to provide a document image conversion method capable of efficiently displaying a document image on a device having a limited display area, increasing the number of output images, and improving visibility.

According to a second aspect of the present invention, the height of each line of the output image is determined based on the maximum height of the rectangle in the input image, so that the heights of each line are aligned on the output image, and the visibility is improved. It is an object of the present invention to provide a document image conversion method capable of further improving.

According to a third aspect of the present invention, the height of each line in the output image is determined based on the maximum height of characters in the input image, so that the height of each line in the output image can be further improved. It is an object of the present invention to provide a document image conversion method capable of further improving the visibility.

According to a fourth aspect of the present invention, the height of each line of the output image is determined based on the height of the input image arranged on each line of the output image, so that the height of each line on the output image is determined. It is an object of the present invention to provide a document image conversion method capable of adjusting the height according to the height of an input image and further improving the visibility.

According to a fifth aspect of the present invention, by setting the height of each line of the output image to the maximum height of the line in the input image,
It is an object of the present invention to provide a document image conversion method capable of adjusting the height of each line on an output image to the maximum height of a line of an input image and further improving visibility.

According to a sixth aspect of the present invention, the height of each line of the output image is determined based on the maximum height of a rectangle included in the line of the input image arranged on each line of the output image. It is an object of the present invention to provide a document image conversion method capable of adjusting the height of each line on an image to the maximum height of a rectangle included in the line of an input image and further improving visibility.

According to the present invention, the height of each line of the output image is determined based on the maximum height of characters included in the line of the input image arranged on each line of the output image. An object of the present invention is to provide a document image conversion method capable of adjusting the height of each line on an image to the maximum height of a character included in a line of an input image arranged in an output image and further improving visibility. And

According to the present invention, the height of each row of the output image is determined by calculating the height of the row of the input image arranged on each row of the output image and the maximum value of the rectangular height within the row of the input image. If the ratio is close to 1, it is determined based on the maximum height of the rectangle included in the row of the input image arranged in each row of the output image. Otherwise, it is arranged in each row of the output image. Determined based on the height of the input image to be performed, or by setting the maximum height of the line in the input image, the size of the characters in the output image is reduced, or the position of the characters is changed, making it difficult to see the contents of the input image. It is an object of the present invention to provide a document image conversion method that can prevent the contents from changing or changing the contents, and can further improve the visibility.

According to a ninth aspect of the present invention, the height of each row of the output image is determined by calculating the height of the row of the input image arranged on each row of the output image and the maximum value of the rectangular height within the row of the input image. If the difference is smaller than a predetermined value, it is determined based on the maximum height of the rectangle included in the row of the input image arranged in each row of the output image. Otherwise, each row of the output image is determined. Determined based on the height of the input image placed in the, or by setting the maximum height of the line in the input image, the characters of the output image becomes smaller, the position of the character changes,
It is an object of the present invention to provide a document image conversion method capable of preventing the contents of an input image from being difficult to see or changing, and further improving the visibility.

According to a tenth aspect of the present invention, the height of each row of the output image is determined by calculating the height of the row of the input image arranged on each row of the output image and the maximum value of the rectangular height within the row of the input image. If the ratio is close to 1, it is determined based on the maximum height of the characters included in the line of the input image arranged on each line of the output image. Otherwise, it is arranged on each line of the output image. Determined based on the height of the input image to be performed, or by setting the maximum height of the line in the input image, the size of the characters in the output image is reduced, or the position of the characters is changed, making it difficult to see the contents of the input image. It is an object of the present invention to provide a document image conversion method that can prevent the contents from changing or changing the contents, and can further improve the visibility.

[0020] According to an eleventh aspect of the present invention, the height of each line of the output image is determined by calculating the height of the line of the input image arranged in each line of the output image and the maximum value of the rectangular height within the line of the input image. If the difference is smaller than a predetermined value, it is determined based on the maximum height of the characters included in the line of the input image arranged on each line of the output image. Otherwise, each line of the output image is determined. Determined based on the height of the input image placed in the input image, or by setting the maximum height of the line in the input image, the size of the characters in the output image may change, or the position of the characters may change. It is an object of the present invention to provide a document image conversion method capable of preventing the content from being difficult to see or changing the content, and further improving the visibility.

According to a twelfth aspect of the present invention, a line image of an input image is reduced in accordance with the height of a line of an output image, thereby preventing the input image from being chipped on the output image. It is an object of the present invention to provide a document image conversion method capable of further improving the visibility and further improving the visibility.

According to a thirteenth aspect of the present invention, a lack of the input image occurs on the output image by moving the line image of the input image from a rectangle exceeding the height of the line of the output image into the line of the output image. It is an object of the present invention to provide a document image conversion method capable of preventing the occurrence of an image, further improving the accuracy, and further improving the visibility.

According to a fourteenth aspect of the present invention, the output image is reduced by reducing the line image of the input image to a line having character pixels exceeding the line range of the output image so as to be within the line range of the output image. A document capable of preventing the input image from being reduced on the image, preventing the input image from being chipped on the output image, further improving the accuracy, and further improving the visibility. It is intended to provide an image conversion method.

According to a fifteenth aspect of the present invention, for a line having character pixels exceeding the range of the line of the output image, the background pixel of the output image is deleted to reduce the line to a size that can be accommodated in the line of the output image. Thereby, while suppressing the input image from being reduced on the output image, it is possible to prevent occurrence of chipping of the input image on the output image, to further improve accuracy, and to further improve visibility. It is an object of the present invention to provide a document image conversion method capable of performing the following.

According to a sixteenth aspect of the present invention, a line having a character pixel exceeding the range of the line of the output image falls within the range of the line of the output image while keeping the number of edges of the foreground and the background of the output image. By reducing the size, the input image is prevented from being reduced on the output image, while preventing the input image from being chipped on the output image, the accuracy is further improved, and the visibility is improved. It is an object of the present invention to provide a document image conversion method capable of further improving.

According to the present invention, by setting the height of each line of the output image based on the height of the output image, it is possible to suppress the reduction of the input image on the output image, An object of the present invention is to provide a document image conversion method capable of preventing occurrence of chipping of an input image on an output image, further improving accuracy, and further improving visibility.

According to the eighteenth aspect of the present invention, each line of the input image is enlarged or reduced in accordance with the height of the line of the output image, thereby suppressing reduction of the input image on the output image. An object of the present invention is to provide a document image conversion method capable of preventing occurrence of chipping of an input image on an output image, further improving accuracy, and further improving visibility.

According to a nineteenth aspect of the present invention, the input image is reduced on the output image by setting the height of each line of the output image based on a standard value of a device that displays the output image. It is an object of the present invention to provide a document image conversion method capable of preventing occurrence of chipping of an input image on an output image while suppressing the occurrence of an image, further improving accuracy, and further improving visibility. I have.

According to a twentieth aspect of the present invention, each line of the input image is enlarged or reduced in accordance with the height of the line of the output image, thereby suppressing reduction of the input image on the output image. An object of the present invention is to provide a document image conversion method capable of preventing occurrence of chipping of an input image on an output image, further improving accuracy, and further improving visibility.

According to a twenty-first aspect of the present invention, when each line of the input image is divided at the end of the line of the output image, the line image is output before and after the division position so as to overlap the middle of the character in the output image. It is an object of the present invention to provide a document image conversion method capable of preventing a decrease in visibility due to line breaks and further improving the visibility.

According to the twenty-second aspect of the present invention, by setting the width of the line image to be overlapped based on the height of the line image of the input image, it is possible to more appropriately prevent line breaks in the middle of characters in the output image. It is an object of the present invention to provide a document image conversion method capable of preventing such a problem and further improving the visibility.

According to the twenty-third aspect, by setting the width of the line image to be overlapped based on the line height of the output image, it is possible to more appropriately prevent the line from being cut off in the middle of a character in the output image. It is another object of the present invention to provide a document image conversion method capable of further improving the visibility.

According to a twenty-fourth aspect of the present invention, the width of a line image to be overlapped is set based on the rectangular size in the image of the input image, so that a line is cut off in the middle of a character in the output image. It is another object of the present invention to provide a document image conversion method capable of efficiently preventing the image and further improving the visibility.

According to a twenty-fifth aspect of the present invention, by setting the width of a line image to be overlapped based on the height of a rectangle in an image of an input image, it is possible to prevent lines from being cut off in the middle of characters in an output image. It is an object of the present invention to provide a document image conversion method capable of appropriately and efficiently preventing the occurrence of a document image and further improving visibility.

According to a twenty-sixth aspect of the present invention, by setting the width of a line image to be overlapped based on the width of a rectangle in an image of an input image, it is more appropriate to set a line break in the middle of a character in an output image. It is an object of the present invention to provide a document image conversion method capable of preventing a document image efficiently and efficiently and further improving the visibility.

According to the twenty-seventh aspect, by setting the width of the line image to be overlapped based on the character size in the image of the input image, it is possible to more appropriately prevent line breaks in the middle of characters in the output image. It is another object of the present invention to provide a document image conversion method capable of efficiently preventing the image and further improving the visibility.

According to the twenty-eighth aspect of the present invention, by setting the width of the line image to be overlapped based on the height of the character in the image of the input image, it is possible to prevent the line from being cut in the middle of the character in the output image. It is an object of the present invention to provide a document image conversion method capable of appropriately and efficiently preventing the occurrence of a document image and further improving visibility.

According to a twenty-ninth aspect of the present invention, the width of a line image to be overlapped is set based on the width of a character in an image of an input image, so that a line is cut off in the middle of a character in an output image. It is an object of the present invention to provide a document image conversion method capable of preventing a document image efficiently and efficiently and further improving the visibility.

According to a thirtieth aspect of the present invention, the width of the line image to be overlapped is set based on the width of the line image of the input image and the width of the output image so that as much of the part as possible can be overlapped without waste. It is another object of the present invention to provide a document image conversion method capable of more appropriately preventing a line from being cut off in the middle of a character in an output image and further improving visibility.

According to a thirty-first aspect of the present invention, the width of the line image of the input image is A, and the width of the output image is B. By setting the width V of the image to V = (NB-A) / N, as much as possible and overlapping as much as possible,
It is an object of the present invention to provide a document image conversion method capable of appropriately preventing a line from being cut off in the middle of a character in an output image and further improving visibility.

According to a thirty-second aspect of the present invention, when the input document images are arranged and output, the document image input device, the document image output device, and the document image conversion device connected via a network include the first to the third embodiments. By executing the document image conversion processing described in any one of the paragraphs 31, the OCR
In addition to avoiding the conversion that changes the content as in the case of using, the document image can be efficiently displayed on a device with a limited display area such as a PDA while allowing information accompanying the document such as the background to be perceived. An object of the present invention is to provide a document image conversion method that can display images well, increase the number of output images, and improve visibility.

According to the thirty-third aspect, when the input document images are arranged and output, the first to thirty-second aspects are provided.
By executing the document image conversion method described in
In addition to avoiding the conversion that changes the content as in the case of using R, the document image can be displayed on a device with a limited display area such as a PDA while allowing information accompanying the document such as the background to be perceived. It is an object of the present invention to provide a document image conversion program capable of efficiently displaying, improving the number of output images, and improving visibility.

According to the thirty-fourth aspect, when the input document images are arranged and output, the first to thirty-first aspects are provided.
By using the document image conversion method described in
In addition to avoiding the conversion that changes the content as in the case of using, the document image can be efficiently displayed on a device with a limited display area such as a PDA while allowing information accompanying the document such as the background to be perceived. It is an object of the present invention to provide a document image conversion device that can display images well, increase the number of output images, and improve visibility.

[0044]

According to a first aspect of the present invention, there is provided a character image converting method for aligning and outputting an input document image, wherein the input document image is subjected to line segmentation processing. The above object is achieved by generating a row image and connecting the generated row images to generate an output image.

According to the above arrangement, when the input document images are arranged and output, the input document images are subjected to line segmentation processing to generate line images, and the generated line images are connected to form an output image. Because it is generated, it avoids the conversion that changes the content as in the case of using OCR, and also allows the user to perceive information accompanying the document such as the background while using a device with a limited display area such as a PDA. Thus, the document image can be efficiently displayed, the number of output images can be improved, and the visibility can be improved.

In this case, for example, the document image conversion method determines the height of each line of the output image based on the maximum height of a rectangle in the input image. Is also good.

According to the above configuration, since the height of each line of the output image is determined based on the maximum height of the rectangle in the input image, the height of each line can be made uniform on the output image, and visibility can be improved. Can be further improved.

Further, for example, in the document image conversion method, the height of each line of the output image may be determined based on a maximum height of a character in the input image. Good.

According to the above configuration, the height of each line of the output image is determined based on the maximum height of the character in the input image, so that the heights of each line on the output image are more precisely aligned. And visibility can be further improved.

Further, for example, in the document image conversion method, the height of each line of the output image is determined based on the height of an input image arranged in each line of the output image. You may decide.

According to the above arrangement, the height of each line of the output image is determined based on the height of the input image arranged in each line of the output image. The height can be adjusted according to the height, and the visibility can be further improved.

Further, for example, in the document image conversion method, the height of each line of the output image may be a maximum height of a line in the input image.

According to the above configuration, since the height of each line of the output image is set to the maximum height of the line in the input image, the height of each line on the output image is set to the maximum height of the line of the input image. They can be aligned, and the visibility can be further improved.

Further, for example, in the document image conversion method, the height of each line of the output image may be determined by changing the height of each line of the output image to a rectangle included in the line of the input image arranged on each line of the output image. May be determined based on the maximum height.

According to the above configuration, the height of each line of the output image is determined based on the maximum height of the rectangle included in the line of the input image arranged in each line of the output image. The height of each row above can be made equal to the maximum height of the rectangle included in the row of the input image, and the visibility can be further improved.

Further, for example, in the document image conversion method, the height of each line of the output image may be determined by changing the height of each line of the output image to a character included in a line of the input image arranged on each line of the output image. May be determined based on the maximum height.

According to the above arrangement, the height of each line of the output image is determined based on the maximum height of characters included in the line of the input image arranged on each line of the output image. The height of each line above can be aligned with the maximum height of characters included in the line of the input image placed in the output image,
The visibility can be further improved.

Further, for example, as set forth in claim 8, in the document image conversion method, the height of each line of the output image is set to the height of the line of the input image arranged on each line of the output image. When the ratio with the maximum value of the height of the rectangle in the line of the input image is close to 1, it is determined based on the maximum height of the rectangle included in the line of the input image arranged in each line of the output image. In other cases, the height may be determined based on the height of the input image arranged in each row of the output image, or may be the maximum height of a row in the input image.

According to the above arrangement, the height of each line of the output image is determined by the ratio of the height of the line of the input image arranged in each line of the output image to the maximum value of the rectangular height within the line of the input image. 1
Is determined based on the maximum height of the rectangle included in the row of the input image arranged in each row of the output image,
In other cases, it is determined based on the height of the input image arranged in each line of the output image, or the maximum height of the line in the input image, so that the characters of the output image become smaller. In addition, it is possible to prevent the content of the input image from being difficult to see or change due to a change in the position of the character, and the visibility can be further improved.

Further, for example, according to the ninth aspect, in the document image conversion method, the height of each line of the output image is set to the height of the line of the input image arranged on each line of the output image. If the difference from the maximum value of the rectangle height in the line of the input image is smaller than a predetermined value, the difference is determined based on the maximum height of the rectangle included in the line of the input image arranged in each line of the output image. Otherwise, the height may be determined based on the height of the input image arranged in each row of the output image, or may be the maximum height of a row in the input image.

According to the above arrangement, the height of each line of the output image is determined by the difference between the height of the line of the input image arranged in each line of the output image and the maximum value of the rectangular height within the line of the input image. If it is smaller than the predetermined value, it is determined based on the maximum height of the rectangle included in the line of the input image arranged in each line of the output image, otherwise, it is arranged in each line of the output image. Determined based on the height of the input image to be processed, or
Because the maximum height of the line in the input image is used, it is possible to prevent the size of the characters in the output image from becoming smaller or changing the position of the characters, making it difficult to see or change the contents of the input image. The visibility can be further improved.

Further, for example, as described in claim 10, in the document image conversion method, the height of each line of the output image is determined by the height of the line of the input image arranged on each line of the output image. When the ratio with the maximum value of the rectangular height in the line of the input image is close to 1, it is determined based on the maximum height of the characters included in the line of the input image arranged in each line of the output image, and In other cases, the height may be determined based on the height of the input image arranged in each row of the output image, or may be the maximum height of a row in the input image.

According to the above configuration, the height of each line of the output image is determined by the ratio between the height of the line of the input image arranged in each line of the output image and the maximum value of the rectangular height within the line of the input image. 1
Is determined based on the maximum height of characters included in a line of the input image arranged on each line of the output image,
In other cases, it is determined based on the height of the input image arranged in each line of the output image, or the maximum height of the line in the input image, so that the characters of the output image become smaller. In addition, it is possible to prevent the content of the input image from being difficult to see or change due to a change in the position of the character, and the visibility can be further improved.

For example, as described in claim 11, in the document image conversion method, the height of each line of the output image is set to the height of the line of the input image arranged on each line of the output image. If the difference from the maximum value of the rectangular height in the line of the input image is smaller than a predetermined value, the determination is made based on the maximum height of the characters included in the line of the input image arranged in each line of the output image. Otherwise, the height may be determined based on the height of the input image arranged in each row of the output image, or may be the maximum height of a row in the input image.

According to the above configuration, the height of each line of the output image is determined by the difference between the height of the line of the input image arranged in each line of the output image and the maximum value of the rectangular height within the line of the input image. If it is smaller than the predetermined value, it is determined based on the maximum height of the characters included in the line of the input image arranged on each line of the output image, otherwise, it is arranged on each line of the output image. Determined based on the height of the input image to be processed, or
Because the maximum height of the line in the input image is used, it is possible to prevent the size of the characters in the output image from becoming smaller or changing the position of the characters, making it difficult to see or change the contents of the input image. The visibility can be further improved.

Further, for example, in the document image conversion method, the line image of the input image may be reduced in accordance with a line height of the output image.

According to the above arrangement, the line image of the input image is
Since the size of the output image is reduced according to the height of the line, it is possible to prevent the input image from being chipped on the output image, to further improve the accuracy, and to improve the visibility. It can be further improved.

Further, for example, in the document image conversion method, the document image conversion method may include moving a line image of the input image to a rectangle exceeding a line height of the output image into a line of the output image. You may.

According to the above arrangement, the line image of the input image is
Since the rectangle exceeding the height of the line of the output image is moved into the line of the output image, it is possible to prevent the input image from being chipped on the output image, and to further improve the accuracy. At the same time, the visibility can be further improved.

Further, for example, in the document image conversion method, the document image conversion method may include converting a line image of the input image into a line having a character pixel exceeding a range of the line of the output image. The size may be reduced to be within the range of the line.

According to the above arrangement, the line image of the input image is
Since a line having character pixels exceeding the range of the line of the output image is reduced to a size that fits within the range of the line of the output image, the output image is suppressed while the input image is not reduced on the output image. The occurrence of chipping of the input image can be prevented, and the accuracy can be further improved, and the visibility can be further improved.

Further, for example, in the above-mentioned document image conversion method, for a line having a character pixel exceeding a line range of the output image, a background pixel of the output image is deleted. The size may be reduced to a size that fits within the range of the line of the output image.

According to the above arrangement, for a line having a character pixel exceeding the range of the line of the output image, the background pixel of the output image is deleted and reduced to a size within the range of the line of the output image. In addition, it is possible to prevent the input image from being chipped on the output image while suppressing the input image from being reduced on the output image, thereby further improving the accuracy and improving the visibility. It can be further improved.

Further, for example, in the above-mentioned document image conversion method, for a line having a character pixel exceeding a line range of the output image, the number of edges of the foreground and the background of the output image is determined. May be reduced to a size that fits within the range of the line of the output image.

According to the above configuration, for a line having a character pixel exceeding the range of the line of the output image, the size of the line that fits within the range of the line of the output image while maintaining the number of edges of the foreground and background of the output image Since it is possible to reduce the size of the input image on the output image, it is possible to prevent the input image from being chipped on the output image, thereby further improving the accuracy. The visibility can be further improved.

For example, in the document image conversion method, the height of each line of the output image may be set based on the height of the output image.

According to the above configuration, the height of each line of the output image is set based on the height of the output image.
While suppressing the reduction of the input image on the output image,
The occurrence of chipping of the input image on the output image can be prevented, the accuracy can be further improved, and the visibility can be further improved.

Further, for example, in the document image conversion method, each line of the input image may be enlarged or reduced according to the height of the line of the output image.

According to the above arrangement, each line of the input image is enlarged or reduced in accordance with the height of the line of the output image. Therefore, the output image is suppressed while the input image is not reduced on the output image. The occurrence of chipping of the input image on the image can be prevented, the accuracy can be further improved, and the visibility can be further improved.

For example, as set forth in claim 19, in the document image conversion method, the height of each line of the output image is set based on a standard value of a device that displays the output image. Is also good.

According to the above configuration, since the height of each line of the output image is set based on the standard value of the device that displays the output image, it is possible to reduce the size of the input image on the output image. While suppressing, it is possible to prevent occurrence of chipping of the input image on the output image, so that accuracy can be further improved and visibility can be further improved.

Further, for example, in the document image conversion method, each line of the input image may be enlarged or reduced according to the height of the line of the output image.

According to the above configuration, each line of the input image is enlarged or reduced in accordance with the height of the line of the output image. Therefore, the output image is suppressed while the input image is not reduced on the output image. The occurrence of chipping of the input image on the image can be prevented, the accuracy can be further improved, and the visibility can be further improved.

Further, for example, as described in claim 21, in the document image conversion method, each line of the input image
When dividing at the end of the line of the output image, the line image may be overlapped before and after the division position and output.

According to the above configuration, when each line of the input image is divided at the end of the line of the output image, the line images are output before and after the division position in an overlapping manner. It is possible to prevent a decrease in visibility due to a line break, and to further improve visibility.

Further, for example, in the document image conversion method, the width of the line image to be overlapped may be set based on the height of the line image of the input image.

According to the above configuration, since the width of the line image to be overlapped is set based on the height of the line image of the input image, the line is more appropriately prevented from being cut off in the middle of the character in the output image. And visibility can be further improved.

Further, for example, in the document image conversion method, the width of the line image to be overlapped may be set based on the height of the line of the output image.

According to the above configuration, the width of the line image to be overlapped is set based on the line height of the output image.
Line breaks in the middle of characters in an output image can be more appropriately prevented, and visibility can be further improved.

Further, for example, in the document image conversion method, the width of the line image to be overlapped may be set based on a rectangular size in the image of the input image.

According to the above configuration, the width of the line image to be overlapped is set based on the rectangular size in the image of the input image. This can be efficiently prevented, and the visibility can be further improved.

Further, for example, in the document image conversion method, the width of the line image to be overlapped may be set based on the height of a rectangle in the image of the input image. Good.

According to the above configuration, the width of the line image to be overlapped is set based on the height of the rectangle in the image of the input image. , And the visibility can be further improved.

Further, for example, in the document image conversion method, the width of the line image to be overlapped may be set based on the width of a rectangle in the image of the input image. .

According to the above configuration, the width of the line image to be overlapped is set based on the width of the rectangle in the image of the input image. And it can prevent it efficiently and can further improve visibility.

Further, for example, in the document image conversion method, the width of the line image to be overlapped may be set based on a character size in the image of the input image.

According to the above configuration, the width of the line image to be overlapped is set based on the character size in the image of the input image. This can be efficiently prevented, and the visibility can be further improved.

Further, for example, in the document image converting method, the width of the line image to be overlapped may be set based on the height of a character in the image of the input image. Good.

According to the above configuration, the width of the line image to be overlapped is set based on the height of the character in the image of the input image. , And the visibility can be further improved.

Further, for example, in the document image conversion method, the width of the line image to be overlapped may be set based on the width of a character in the image of the input image. .

According to the above configuration, since the width of the line image to be overlapped is set based on the width of the character in the image of the input image, it is possible to more appropriately prevent the line break in the middle of the character in the output image. And it can prevent it efficiently and can further improve visibility.

Further, for example, in the document image converting method, the width of the line image to be overlapped is set based on the width of the line image of the input image and the width of the output image. May be.

According to the above configuration, the width of the line image to be overlapped is set based on the width of the line image of the input image and the width of the output image. Line breaks in the middle of characters in an output image can be more appropriately prevented, and visibility can be further improved.

Also, for example, in the document image conversion method, the width of the line image of the input image is A, the width of the output image is B, and B is N (integer) times. When it becomes larger than A for the first time, the width V of the line image to be overlapped may be set to V = (NB−A) / N.

According to the above configuration, the width of the line image of the input image is A, and the width of the output image is B. When B becomes larger than A for the first time when B is multiplied by N (integer), the overlapped line image Since the width V is set to V = (NB−A) / N, it is possible to more effectively prevent a line from being cut off in the middle of a character in an output image by overlapping as much as possible without waste. The visibility can be further improved.

Furthermore, for example, in a document image conversion method for arranging and outputting input document images, a document image input device, a document image output device, and a document image connected via a network A conversion device may execute the document image conversion processing according to any one of claims 1 to 31.

According to the above arrangement, when the input document images are arranged and output, the document image input device, the document image output device, and the document image conversion device connected via a network are provided. Since the document image conversion process described in any of (1) to (3) above is performed, it is possible to avoid the conversion that changes the content as in the case of using the OCR and to also be able to perceive information accompanying the document such as the background. In addition, a document image can be efficiently displayed on a device having a limited display area such as a PDA, the number of output images can be increased, and visibility can be improved.

A document image conversion program according to a thirty-third aspect of the present invention executes the document image conversion method according to the first to thirty-two in a document image conversion program for aligning and outputting input document images. By doing so, the above object is achieved.

According to the above configuration, when the input document images are arranged and output, the document image conversion method according to any one of claims 1 to 32 is executed, so that the contents are converted as in the case of using OCR. Can efficiently display a document image on a device having a limited display area, such as a PDA, while avoiding conversion that would change the document, and allowing the user to perceive information accompanying the document, such as the background. The number of images can be improved, and the visibility can be improved.

A document image conversion apparatus according to a thirty-fourth aspect of the present invention uses the document image conversion method according to any one of the first to thirty-first aspects in a document image conversion apparatus for aligning and outputting input document images. Thereby, the above object is achieved.

According to the above arrangement, when the input document images are arranged and output, the document image conversion method according to any one of claims 1 to 31 is used. A document image can be efficiently displayed on a device having a limited display area, such as a PDA, while avoiding a conversion that adds a change and allowing information accompanying the document such as a background to be perceived. And the visibility can be improved.

[0112]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. It should be noted that the embodiments described below are preferred embodiments of the present invention, and therefore, various technically preferable limitations are added. However, the scope of the present invention is not limited to the following description. The embodiments are not limited to these embodiments unless otherwise specified.

FIGS. 1 to 7 are diagrams showing a first embodiment of a document image conversion method, a document image conversion program and a document image conversion apparatus according to the present invention. This corresponds to Claims 33 and 34.

FIG. 1 is a schematic block diagram of a document image conversion apparatus 1 to which a first embodiment of a document image conversion method, a document image conversion program and a document image conversion apparatus according to the present invention is applied.

In FIG. 1, a document image conversion apparatus 1 is composed of an information processing apparatus such as a computer, and includes a program execution device 2, an input device 3, an output device 4, a reading device 5, and the like.

As shown in FIG. 2, for example, the reading device 5 is a CD-ROM (Compact Disc Read Only Memory).
Drive, etc., under the control of the program execution device 2,
It reads information recorded on a recording medium 6 such as a CD-ROM, and outputs the read information to the program execution device 2.

The input device 3 is a keyboard, a mouse, and the like, and is used to input various information and instructions to the program execution device 2.

The output device 4 is a display or the like, and outputs a processing result of the program execution device 2, information or a command input from the input device 3, and the like.

The document image conversion device 1 causes the reading device 5 to read a recording medium on which a document image conversion program and necessary data are recorded, for example, a CD-ROM, and reads the document image conversion program and necessary data. It is constructed by introducing it to the program execution device 2.

As shown in FIG. 2, the document image conversion apparatus 1 has a circuit block configuration. As the program execution apparatus 2, a CPU (Central Processing Unit) is used.
11, ROM (Read Only Memory) 12, RAM (Rand
om Access Memory) 13 and a hard disk 14 and the like.
However, a display 4 a is provided as the output device 4, and a CD-ROM drive 5 a is provided as the reading device 5, and main parts are connected by a bus 15.

The ROM 12 stores basic programs and necessary system data.
Stores a CD-ROM 6a in which an OS (Operating System) and a document image conversion program and necessary data are recorded.
A document image conversion program read and introduced by the D-ROM drive 5a and necessary data are stored. This document image conversion program operates on an OS mounted on the hard disk 14.

While using the RAM 13 as a work memory, the CPU 11 executes a document image conversion program on the OS of the hard disk 14, constructs the functional blocks shown in FIG. 3, and executes a document image conversion process.

That is, the document image conversion apparatus 1 executes the document image conversion program, and as shown in FIG. 3, the image input unit 21, the image output unit 22, the rectangle extraction unit 2
3. Construct each functional unit such as the line cutout unit 24, the character cutout unit 25, and the line image arrangement unit 26

The image input section 21 takes in an image using an image input device such as a scanner or a digital camera. In the following description, for simplicity, a description will be given assuming that a black-and-white document is captured as a binary image.

The image output section 22 outputs the converted divided image to an external device such as a PDA. The external device includes a small display unit, and displays the input divided image on the small display unit.

The rectangle extracting unit 23 extracts a circumscribed rectangle of the black pixel connected component from the image input from the image input unit 21. Many methods for extracting this connected component have been proposed in the past, for example, the method described in Japanese Patent No. 3001005 previously proposed by the present applicant and the method described in Japanese Patent No. 294884.
No. 0 publication can be used.

The line cutout section 24 cuts out a line image from the image input from the image input section 21. Various methods have been conventionally proposed as a method for extracting the line image.
For example, the method described in Japanese Patent No. 2895122 or the method described in Japanese Patent No. 2991761 can be used.

The character extracting section 25 extracts a character image from the image input from the image input section 21. Various methods have been conventionally proposed for extracting the character image. For example, a method described in Japanese Patent Application Laid-Open No. 9-106437 can be used.

The row image arranging section 26 shapes and arranges the row images to generate divided images. Details of the row image arrangement unit 26 will be described later.

Next, the operation of the present embodiment will be described. The document image conversion device 1 according to the present embodiment divides an input image into lines to generate an image with good visibility on a small screen.

That is, when an image is input from the image input unit 21 as shown in FIG.
The line cutout unit 24 divides the image into line images (step S10).
1).

In the division into line images, for example, the input image shown on the left side of FIG. 5 is divided into lines by using a portion surrounded by a dotted line of the input image as a line image.
As shown on the right side of FIG. 5, the input image is divided into rows. The square shown at the lower left of FIG. 5 indicates the display size (screen size) of a small display screen such as a PDA.

On the other hand, FIG.
When the same input image is simply divided as shown in FIG.
, The number of divisions increases. The square shown at the lower left of FIG. 6 indicates the display size (screen size) of a small display screen such as a PDA.

Note that the document image conversion apparatus 1 assigns a leading order to the line cutout image, and performs processing in order from the higher order line. Various methods can be used for assigning the reading order. For example, a method described in Japanese Patent Application Laid-Open No. 8-147410 can be used.

When the line division of the input image is completed, the line image arranging unit 26 sets the head position Xs in the line direction on the line image (the left end position of the image not yet pasted on the output image) and the output The head position Ys (the upper end position of the area where the input line is not pasted yet) in the direction perpendicular to the line on the image is initialized (step S102).
Check whether all line images are pasted on the output image, that is, whether the line image width of the small display screen to be displayed such as a PDA is smaller than the head position Xs in the line direction (Xs> line image width) (Step S103).

In step S103, when the row image width is not smaller than the head position Xs in the row direction (Xs ≦ row image width), the row image arranging unit 26 sets the column image width of the small display screen to be displayed to the column direction. (Ys + H> output image height) is checked (step S1).
04).

In step S104, when the column image width of the small display screen to be displayed is larger than the head position Ys + H in the column direction (Ys + H ≦ output image height), the line image arrangement unit 26 sets the line image and the output image (Xs, 0) (Xs + W, H), with the upper left of each image as the origin (0, 0)
Of the output image (the row image of H width from Xs)
Ys) (W, Ys + H) (Step S10)
5) Assuming that Xs = Xs + W and Ys = Ys + H (step S106), the process returns to step S103 and performs the same processing as described above.

If the row image width is smaller than the head position Xs in the row direction (Xs> row image width) in step S103, the row image arrangement unit 26 checks whether the processing has been completed for all rows (step S107). If the processing has not been completed for all the rows, the processing shifts to the processing for the next row image (set to Xs = 0) (step S10).
8) It is checked whether the column image width of the small display screen to be displayed is smaller than the head position Ys + H in the column direction (Ys + H> output image height) (step S104).

In step S104, when the column image width of the small display screen to be displayed is smaller than the head position Ys + H in the column direction (Ys + H> output image height), the row image arrangement section 26 processes the next output image. (Set to Ys = 0) (step S109), the process proceeds to step S105, and the output image is pasted in the same manner as above (step S105), and Xs = Xs + W and Ys = Ys + H are set (step S106). , And returns to step S103 to perform the same processing as described above.

That is, as shown in FIG. 7, the upper left of each of the row image and the output image is defined as the origin (0, 0), and the row image (Xs to H width) of (Xs, 0) (Xs + W, H) is set. Of the output image (W, Ys +
H).

If the row image width is smaller than the head position Xs in the row direction (Xs> row image width) in step S103, the row image arrangement unit 26 checks whether the processing has been completed for all rows (step S107). If the processing has been completed for all rows, the output image is output to the image output unit 22.
And the image output unit 22 outputs the image to a display unit such as a PDA, and the process ends.

In the line image arrangement processing, the size (width and height) of the output image is processed according to the size of the display unit such as a PDA, and there is enough room for pasting the line image to the output image. Confirmation of whether or not remains. The above process and this process may be performed in parallel.

By performing the above processing, an output image cut out as a plurality of line images shown in FIG. 5 is generated and displayed on a display unit such as a PDA. Therefore, the number of output images can be reduced and the visibility of the output image can be greatly improved as compared with the case where the input image is simply divided and displayed and output as shown in FIG.

As described above, when aligning and outputting an input document image, the document image conversion apparatus 1 of the present embodiment performs a line cutout process on the input document image to generate a line image, and generates the line image. The output image is generated by connecting the line images thus obtained.

Therefore, a device such as a PDA or the like having a limited display area while avoiding conversion that changes the content as in the case of using the OCR and allowing information accompanying the document such as the background to be perceived. A document image can be efficiently displayed thereon, the number of output images can be improved, and the visibility can be improved.

FIG. 8 is a diagram showing a second embodiment of a document image conversion method, a document image conversion program, and a document image conversion apparatus according to the present invention. It corresponds to.

This embodiment is applied to a document image conversion device similar to the document image conversion device 1 of the first embodiment. In the description of this embodiment,
The description will be made using the reference numerals used in the description of the first embodiment as needed, as necessary.

The document image conversion apparatus 1 according to the present embodiment divides an input image into lines and aligns the height of each line of an output image.

That is, as shown in FIG. 8, when the document image conversion apparatus 1 receives an image from the image input section 21,
First, the input image is subjected to rectangle extraction by the rectangle extraction unit 23 (step S201), and the maximum value M (maximum rectangle size M) is obtained from the heights of the extracted rectangles (step S20).
2).

Next, as in the case of the first embodiment, the line cutout section 24 divides the image into line images and cuts out the lines (step S203). (The left end position of the image not yet pasted on the output image) and the start position Ys (the upper end position of the area where the input line is not pasted yet) on the output image in the direction perpendicular to the line. Initialization is performed (step S204).

Note that, instead of extracting a rectangle from the input image,
The character image extraction described in JP-A-9-106437 may be performed, and the maximum value of the height may be used. However, in this method, although the processing is complicated, the accuracy is improved because the Japanese document includes characters and the like separated vertically.

Next, the line image arranging section 26 determines whether or not all the line images have been pasted on the output image,
It is checked whether the row image width of the small display screen to be displayed such as A is smaller than the head position Xs in the row direction (Xs> row image width) (step S205), and the row image width is set to the head position X in the row direction.
If it is not smaller than s (Xs ≦ row image width), the column image width of the small display screen to be displayed is the head position Ys in the column direction.
It is checked whether it is smaller than + H (Ys + H> output image height) (step S206).

In step S206, when the column image width of the small display screen to be displayed is larger than the head position Ys + H in the column direction (Ys + H ≦ output image height), the row image arrangement unit 26 sets the row image and the output image (Xs, 0) (Xs + W, H), with the upper left of each image as the origin (0, 0)
Of the output image (the row image of H width from Xs)
Ys) (W, Ys + H) (Step S20)
7) Assuming that Xs = Xs + W and Ys = Ys + H (step S208), the process returns to step S205 and performs the same processing as described above.

If the row image width is smaller than the head position Xs in the row direction (Xs> row image width) in step S205, the row image arrangement unit 26 checks whether the processing has been completed for all rows (step S209). If the processing has not been completed for all the rows, the processing shifts to the processing for the next row image (set to Xs = 0) (step S21).
0), it is confirmed whether the column image width of the small display screen to be displayed is smaller than the head position Ys + H in the column direction (Ys + H> output image height) (step S206).

In step S206, when the column image width of the small display screen to be displayed is smaller than the head position Ys + H in the column direction (Ys + H> output image height), the row image arrangement section 26 processes the next output image. (Set to Ys = 0) (step S211), and then proceeds to step S207, where the output image is pasted in the same manner as above (step S207), and Xs = Xs + W and Ys = Ys + H are set (step S207). , And returns to step S205 to perform the same processing as described above.

If the row image width is smaller than the head position Xs in the row direction (Xs> row image width) in step S205, the row image arrangement unit 26 checks whether the processing has been completed for all rows (step S209). If the processing has been completed for all rows, the output image is output to the image output unit 22.
And the image output unit 22 outputs the image to a display unit such as a PDA, and the process ends.

As described above, the character image conversion apparatus 1 according to the present embodiment determines the height of each line of the output image based on the maximum height of the rectangle in the input image.

Accordingly, the height of each row can be made uniform on the output image, and the visibility can be further improved.

Further, character image conversion apparatus 1 of the present embodiment
Determines the height of each line of the output image based on the maximum height of characters in the input image.

Therefore, the height of each line on the output image can be more precisely aligned, and the visibility can be further improved.

FIGS. 9 and 10 are diagrams showing a third embodiment of a document image conversion method, a document image conversion program and a document image conversion apparatus according to the present invention. This corresponds to claim 5.

Note that this embodiment is applied to a document image conversion device similar to the document image conversion device 1 of the first embodiment, and in the description of this embodiment,
The description will be made using the reference numerals used in the description of the first embodiment as needed, as necessary.

The document image conversion apparatus 1 of the present embodiment arranges different lines of the input image on the same line of the output image, and arranges more characters in a small area.

That is, as shown in FIG. 9, when the document image conversion apparatus 1 receives an image from the image input section 21,
First, as in the case of the first embodiment, the line cutout unit 24 divides the image into line images and cuts out the lines (step S301), and the head position Xs in the line direction on the line image obtained by line division. (The left end position of the image not yet pasted on the output image) and the head position Ys in the direction perpendicular to the line on the output image (the upper end position of the area where the input line is not pasted yet) are initialized ( Step S302).

Next, the row image arrangement unit 26 checks whether the row image width Lw of the small display screen to be displayed such as a PDA is smaller than the head position Xs in the row direction (Xs> Lw) (step S303). If the row image width is not smaller than the head position Xs in the row direction (Xs ≦ Lw), F = Xs (step S304), and the output image height Ih, which is the column image width of the small display screen to be displayed, is Direction head position Ys +
It is checked whether it is smaller than H (Ys + H> Ih) (step S305).

In step S305, the output image height Ih is larger than the head position Ys + H in the column direction (Ys + H ≦ I
h) At this time, the row image arrangement unit 26 sets the origin (0, 0) at the upper left of each of the row image and the output image,
A row image of (F, 0) (F + W, H) (a row image having a width from F to H) is pasted on (0, Ys) (W, Ys + H) of the output image (step S306), and Xs = Xs + W, Ys = Y
As s + H (step S307), step S303
And the same processing as above is performed.

In step S303, when the line image width Lw is smaller than the head position Xs in the line direction (Xs> Lw), the line image arrangement unit 26 checks whether the processing has been completed for all the lines (step S308). If the processing has not been completed for all the rows, the processing shifts to the processing for the next row image, where F = Lw−Xs, Xs = 0, and Ys = Ys−.
H, H = max (H, Hn) (Step S30)
9) Check whether the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> Ih) (step S305).

In step S305, the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> I).
h) At this time, the line image arrangement unit 26 shifts to the processing of the next output image (sets to Ys = 0) (step S31).
0), the process proceeds to step S306, and the output image is pasted in the same manner as described above (step S306), and Xs = X
s + W, Ys = Ys + H (step S307),
Returning to step S303, the same processing is performed as described above.

If the row image width is smaller than the head position Xs in the row direction (Xs> Lw) in step S303, the row image arranging unit 26 checks whether the processing has been completed for all rows (step S308). When the processing has been completed for all the rows, the output image is passed to the image output unit 22, and the image output unit 22 outputs the image to a display unit such as a PDA.
The process ends.

That is, when the pasting of one line image is completed, the character image conversion apparatus 1 of the present embodiment does not proceed to the processing of the next line on the output image, but executes the remaining part of the current line. To the next line of the input image. Specifically, FIG.
As shown in the figure, since multiple lines of the input image are arranged on the same line on the output image, by setting the height of the line of the output image to its maximum value, all the images can be accommodated and By increasing the maximum line height to 1.1 times, etc.
Line spacing can be clarified.

In the process shown in FIG. 9, the range where the image is to be pasted may protrude from the row image. In this case, the protruding portion is ignored. Also,
When connecting multiple line images to the same line of the output image, if the later line height is larger and pasting the latter line, if it exceeds the range of the output image, put it in the same line Give up and process the next output image.

In this case, a line image included in the same line may be obtained in advance, and the movement to the next output image may be determined using the maximum value. However, the above-described processing is simpler.

As described above, the character image conversion apparatus 1 of the present embodiment determines the height of each line of the output image based on the height of the input image arranged on each line of the output image.

Therefore, the height of each row on the output image can be made uniform according to the height of the input image, and the visibility can be further improved.

The character image conversion device 1 of the present embodiment
Defines the height of each row in the output image as the maximum height of a row in the input image.

Therefore, the height of each line on the output image can be made equal to the maximum height of the line of the input image, and the visibility can be further improved.

FIG. 11 is a diagram showing a fourth embodiment of a document image conversion method, a document image conversion program, and a document image conversion apparatus according to the present invention. It corresponds to.

This embodiment is applied to a document image conversion device similar to the document image conversion device 1 of the first embodiment. In the description of this embodiment,
The description will be made using the reference numerals used in the description of the first embodiment as needed, as necessary.

The document image conversion apparatus 1 according to the present embodiment arranges different lines of the input image on the same line of the output image and arranges more characters in a smaller area. Instead of using the row height, use the maximum value of the maximum rectangle height in the row.

That is, the document image conversion apparatus 1 is configured as shown in FIG.
As shown in (1), when an image is input from the image input unit 21, the line cutout unit 24 first divides the image into line images and cuts out the lines as in the case of the first embodiment (FIG. Step S401), a head position Xs in the row direction on the line image obtained by dividing the line (the left end position of an image that has not been pasted on the output image), and a head position Ys (input line position) perpendicular to the line on the output image. Is initialized at the top of the area that has not been pasted yet, and the row height H
Is the maximum rectangular height Hn in the next line (step S40).
2).

Next, the line image arranging section 26 determines whether or not all the line images have been pasted on the output image,
It is checked whether the row image width Lw of the small display screen to be displayed such as A is smaller than the top position Xs in the row direction (Xs> Lw) (step S403), and the row image width Lw is smaller than the top position Xs in the row direction. Is not small (Xs ≦ Lw), F =
As Xs (step S404), it is checked whether the output image height Ih, which is the column image width of the small display screen to be displayed, is smaller than the head position Ys + H in the column direction (Ys + H> Ih) (step S405).

In step S405, the output image height Ih is larger than the head position Ys + H in the column direction (Ys + H ≦ I
h) At this time, the row image arrangement unit 26 sets the origin (0, 0) at the upper left of each of the row image and the output image,
A row image of (F, 0) (F + W, H) (a row image having a width from F to H) is pasted on (0, Ys) (W, Ys + H) of the output image (step S406), and Xs = Xs + W, Ys = Y
As s + H (step S407), step S403
And the same processing as above is performed.

If the line image width Lw is smaller than the head position Xs in the line direction (Xs> Lw) in step S403, the line image arrangement unit 26 checks whether the processing has been completed for all the lines (step S408). If the processing has not been completed for all the rows, the processing shifts to the processing for the next row image, where F = Lw−Xs, Xs = 0, and Ys = Ys−.
H, H = max (H, Hn) (Step S40)
9) It is checked whether the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> Ih) (step S405).

In step S405, the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> I).
h) At this time, the line image arrangement unit 26 shifts to the processing of the next output image (sets to Ys = 0) (step S41).
0), the process proceeds to step S406, and the output image is pasted in the same manner as described above (step S406), and Xs = X
s + W, Ys = Ys + H (step S407)
Returning to step S403, the same processing is performed as described above.

If the row image width is smaller than the head position Xs in the row direction (Xs> Lw) in step S403, the row image arrangement unit 26 checks whether the processing has been completed for all rows (step S408). When the processing has been completed for all the rows, the output image is passed to the image output unit 22, and the image output unit 22 outputs the image to a display unit such as a PDA.
The process ends.

That is, the height of the line of the output image is not always the maximum height of the rectangle in the line of the output image.
Therefore, from the viewpoint of grasping the state of the input image, it is preferable that character image conversion apparatus 1 of the present embodiment displays the same line image on the input image at the same line height on the output image. However, from the viewpoint of arranging more character images in a smaller area, the processing is somewhat complicated, but only the rectangles included in the lines of the output image are re-extracted, and the maximum rectangle height among them is extracted. Is extracted and is set as the width H of the row image.

In this case, the maximum rectangular height Hn in the next line may be set as the maximum character height in the line.

As a method of extracting characters, a character image extraction described in Japanese Patent Application Laid-Open No. 9-106437 may be performed, and the maximum value of the height may be used.

As described above, character image conversion apparatus 1 of the present embodiment sets the height of each line of the output image to the maximum height of the rectangle included in the line of the input image arranged on each line of the output image. It is decided based on.

Therefore, the height of each line on the output image can be made equal to the maximum height of the rectangle included in the line of the input image, and the visibility can be further improved.

Further, character image conversion apparatus 1 of the present embodiment
Determines the height of each line of the output image based on the maximum height of characters included in the line of the input image arranged on each line of the output image.

Therefore, the height of each line on the output image can be made equal to the maximum height of the characters included in the line of the input image arranged in the output image, and the visibility can be further improved.

FIGS. 12 and 13 show a fifth embodiment of the document image conversion method, the document image conversion program and the document image conversion apparatus of the present invention.
This corresponds to claims 8 to 11.

This embodiment is applied to a document image conversion device similar to the document image conversion device 1 of the first embodiment, and in the description of this embodiment,
The description will be made using the reference numerals used in the description of the first embodiment as needed, as necessary.

The document image conversion apparatus 1 according to the present embodiment switches the reference for calculating the line height of the output image according to the ratio or difference between the height of the in-line rectangle and the character.

That is, the document image conversion device 1 is configured as shown in FIG.
As shown in (1), when an image is input from the image input unit 21, the line cutout unit 24 first divides the image into line images and cuts out the lines as in the case of the first embodiment (FIG. Step S501), the head position Ys in the direction perpendicular to the line on the output image (the upper end position of the area where the input line is not pasted) and the width H of the line image are initialized (Ys =
0, H = 0) (step S502).

Next, the row image arranging section 26 determines whether or not all the row images have been pasted on the output image,
It is checked whether the row image width Lw of the small display screen to be displayed such as A is smaller than the head position Xs in the row direction (Xs> Lw) (step S503), and the row image width Lw is smaller than the head position Xs in the row direction. Is not small (Xs ≦ Lw), F =
As Xs (step S504), it is checked whether the output image height Ih, which is the column image width of the small display screen to be displayed, is smaller than the head position Ys + H in the column direction (Ys + H> Ih) (step S505).

In step S505, the output image height Ih is larger than the head position Ys + H in the column direction (Ys + H ≦ I
h) At this time, the row image arrangement unit 26 sets the origin (0, 0) at the upper left of each of the row image and the output image,
A row image of (F, 0) (F + W, H) (a row image having a width from F to H) is pasted on (0, Ys) (W, Ys + H) of the output image (step S506), and Xs = Xs + W, Ys = Y
Assuming that s + H and H = Hn (step S507), the process returns to step S503 and performs the same processing as above.

If the line image width Lw is smaller than the head position Xs in the line direction (Xs> Lw) in step S503, the line image arrangement unit 26 checks whether the processing has been completed for all lines (step S508). If the processing has not been completed for all rows, it is checked whether the ratio of the maximum rectangular height HR in the next row to the height HL of the next row is smaller than 0.8 (HR / HL <0.8). (Step S509).

In step S509, when the ratio of the maximum rectangular height HR in the next row to the height HL of the next row is smaller than 0.8 (HR / HL <0.8), the height HL of the next row is obtained. Is the maximum rectangular height Hn in the next line (step S51).
0), the process proceeds to the next row image (Hn), and F = Lw
−Xs, Xs = 0, Ys = Ys−H, H = max (H,
Hn) (step S511), the output image height Ih
Is smaller than the head position Ys + H in the column direction (Ys + H
> Ih) is confirmed (step S505).

In step S509, when the ratio of the maximum rectangle height HR in the next row to the height HL of the next row is larger than 0.8 (HR / HL ≧ 0.8), the maximum rectangle height in the next row is determined. HR is set to the maximum rectangular height Hn in the next line (step S512), and the processing shifts to the processing of the next line image (Hn).
= Lw-Xs, Xs = 0, Ys = Ys-H, H = max
(H, Hn) (step S511), it is determined whether the output image height Ih is smaller than the head position Ys + H in the column direction (Y
s + H> Ih) is confirmed (step S505).

At step S505, the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> I).
h) At this time, the line image arrangement unit 26 shifts to the processing of the next output image (sets to Ys = 0) (step S51).
3) Then, the process proceeds to step S506, where the output image is pasted in the same manner as described above (step S506), and Xs = X
s + W, Ys = Ys + H (step S507),
Returning to step S503, the same processing is performed as described above.

If the row image width is smaller than the head position Xs in the row direction (Xs> Lw) in step S503, the row image arrangement unit 26 checks whether the processing has been completed for all rows (step S508). When the processing has been completed for all the rows, the output image is passed to the image output unit 22, and the image output unit 22 outputs the image to a display unit such as a PDA.
The process ends.

That is, as shown in FIG. 13, the lines of the input image are stored in the area to which the output image is allocated (the output line height obtained from the maximum rectangular height) by two methods. For example, when considering three types of output images shown on the right side with respect to the input image shown on the left side of FIG. 13, in the case of the top output image, the image of the input image is made to fit into the line of the output image. Is scaled (reduced), and in the case of the output image in the middle,
The superscript character of the input image is moved, and in the case of the output image at the bottom, the line height of the input image is set. In this way, when the line height of the output image is determined by the maximum rectangle size in the line, when the character image is placed within that range, the character becomes smaller like the top output image, When the position of the character changes as in the output image, the contents of the input image may be difficult to see or the contents may change. On the other hand, this reduction and movement of the character position can be performed within the range that does not affect the content.
If done appropriately, more content can be displayed on the output image.

Therefore, in the document image conversion apparatus 1 of the present embodiment, the ratio (HR / HL) between the maximum rectangular height HR in the next line and the height HL in the next line is obtained, and the ratio (HR / HL) is obtained. H
L) is less than 0.8, the height HL of the next row is set to H; otherwise, the maximum rectangle height HR in the next row.
Is H.

In this case, instead of the rectangle, a character rectangle obtained by extracting a character image described in Japanese Patent Application Laid-Open No. 9-104637 may be used, and the maximum rectangle height in the next line may be used. Not the ratio of the height HR to the height HL of the next row,
The same operation can be performed using the difference.

In the case where the above processing is performed, FIG.
In the above example, since the ratio of the maximum rectangular height HR in the next row to the height HL of the next row is less than 0.8, the row height is used as H. On the other hand, in the case of the example shown in the lower part of FIG.

As described above, the character image conversion apparatus 1 according to the present embodiment determines the height of each line of the output image by the height of the line of the input image arranged on each line of the output image and the height of each line of the input image. If the ratio to the maximum value of the rectangle height is close to 1, it is determined based on the maximum height of the rectangle included in the line of the input image arranged in each line of the output image, otherwise, ,
It is determined based on the height of the input image arranged in each row of the output image, or is set as the maximum height of the row in the input image.

[0209] Therefore, it is possible to prevent the characters of the output image from becoming smaller or the positions of the characters being changed, thereby making it difficult to view the contents of the input image or changing the contents, thereby further improving the visibility. be able to.

The character image conversion device 1 of the present embodiment
The height of each row of the output image, if the difference between the height of the row of the input image arranged in each row of the output image and the maximum rectangular height in the row of the input image is smaller than a predetermined value Is
Determined based on the maximum height of the rectangle included in the line of the input image arranged in each line of the output image, otherwise, based on the height of the input image arranged in each line of the output image Or the maximum height of the line in the input image.

[0211] Therefore, it is possible to prevent the characters of the output image from becoming smaller or the positions of the characters being changed, thereby making it difficult to view the contents of the input image or changing the contents, thereby further improving the visibility. be able to.

Further, character image conversion apparatus 1 of the present embodiment determines the height of each line of the output image by the height of the line of the input image arranged on each line of the output image and the rectangular height within the line of the input image. If the ratio to the maximum value of the input image is close to 1, it is determined based on the maximum height of the characters included in the line of the input image arranged on each line of the output image. It is determined based on the height of the input image arranged in each row of the output image, or is set as the maximum height of the row in the input image.

[0213] Therefore, it is possible to prevent the characters of the output image from becoming smaller or the positions of the characters being changed, thereby making it difficult to view the contents of the input image or changing the contents, thereby further improving the visibility. be able to.

Further, character image conversion apparatus 1 of the present embodiment
The height of each row of the output image, if the difference between the height of the row of the input image arranged in each row of the output image and the maximum rectangular height in the row of the input image is smaller than a predetermined value Is
Determined based on the maximum height of the characters included in the line of the input image arranged in each line of the output image, otherwise, based on the height of the input image arranged in each line of the output image Or the maximum height of the line in the input image.

Therefore, it is possible to prevent the characters of the output image from becoming smaller or the positions of the characters being changed, thereby making it difficult to view the contents of the input image or changing the contents, thereby further improving the visibility. be able to.

FIG. 14 is a diagram showing a sixth embodiment of a document image conversion method, a document image conversion program, and a document image conversion device according to the present invention.
And claim 13.

This embodiment is applied to a document image conversion device similar to the document image conversion device 1 of the first embodiment. In the description of this embodiment,
The description will be made using the reference numerals used in the description of the first embodiment as needed, as necessary.

The document image conversion apparatus 1 according to the present embodiment reduces only the portion of the line image of the input image which does not fit in the line height of the output image.

That is, the document image conversion device 1 is configured as shown in FIG.
As shown in (1), when an image is input from the image input unit 21, the line cutout unit 24 first divides the image into line images and cuts out the lines as in the case of the first embodiment (FIG. Step S601), the head position Ys in the direction perpendicular to the line on the output image (the upper end position of the area where the input line is not pasted) and the width H of the line image are initialized (Ys =
0, H = 0) (step S602).

Next, the row image arranging section 26 determines whether or not all the row images have been pasted on the output image,
It is checked whether the row image width Lw of the small display screen to be displayed such as A is smaller than the head position Xs in the row direction (Xs> Lw) (step S603), and the row image width Lw is smaller than the head position Xs in the row direction. Is not small (Xs ≦ Lw), F =
As Xs (step S604), it is checked whether the output image height Ih, which is the column image width of the small display screen to be displayed, is smaller than the head position Ys + H in the column direction (Ys + H> Ih) (step S605).

In step S605, the output image height Ih is larger than the head position Ys + H in the column direction (Ys + H ≦ I
h) At this time, the row image arrangement unit 26 sets the origin (0, 0) at the upper left of each of the row image and the output image,
A row image of (F, 0) (F + W, H) (a row image having a width from F to H) is pasted on (0, Ys) (W, Ys + H) of the output image (step S606), and Xs = Xs + W, Ys = Y
Assuming that s + H and H = Hn (step S607), the process returns to step S603 and performs the same processing as above.

If the line image width Lw is smaller than the head position Xs in the line direction (Xs> Lw) in step S603, the line image arrangement unit 26 checks whether the processing has been completed for all lines (step S608). If the processing has not been completed for all rows, it is checked whether the ratio of the maximum rectangular height HR in the next row to the height HL of the next row is smaller than 0.8 (HR / HL <0.8). (Step S609).

In step S609, when the ratio of the maximum rectangle height HR in the next line to the next line height HL is smaller than 0.8 (HR / HL <0.8), the maximum rectangle height in the next line is determined. Is set as the maximum rectangular height Hn in the next row, and a row image conversion process is performed (step S610), and the next row image (H
The processing shifts to the processing of n), and F = Lw−Xs, Xs = 0, Y
Assuming that s = Ys-H and H = max (H, Hn) (step S611), the output image height Ih is the top position Y in the column direction.
It is checked whether it is smaller than s + H (Ys + H> Ih) (step S605).

In step S6609, when the ratio of the maximum rectangular height HR in the next row to the height HL of the next row is larger than 0.8 (HR / HL ≧ 0.8), the height HL of the next row is obtained. Is the maximum rectangular height Hn in the next line (step S61).
2) The processing shifts to the processing of the next row image (Hn), and F = Lw
−Xs, Xs = 0, Ys = Ys−H, H = max (H,
Hn) (step S611), the output image height Ih
Is smaller than the head position Ys + H in the column direction (Ys + H
> Ih) is confirmed (step S605).

In step S605, the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> I).
h) At this time, the line image arrangement unit 26 shifts to the processing of the next output image (sets to Ys = 0) (step S61).
3) Then, the process proceeds to step S606, where the output image is pasted in the same manner as described above (step S606), and Xs = X
s + W, Ys = Ys + H (step S607),
Returning to step S603, the same processing is performed as described above.

If the row image width is smaller than the head position Xs in the row direction (Xs> Lw) in step S603, the row image arrangement unit 26 checks whether the processing has been completed for all rows (step S608). When the processing has been completed for all the rows, the output image is passed to the image output unit 22, and the image output unit 22 outputs the image to a display unit such as a PDA.
The process ends.

Thus, the maximum rectangular height HR in the next line
When the ratio between the height of the next line and the height HL of the next line is large, processing similar to that of the fourth embodiment described above results in that if the input line height is larger than the output line height, the image lacks in the output image. May occur. Therefore, when obtaining the row height of the output image using the maximum rectangular height in the next row, it is necessary to perform some processing on the row image of the input image.

Accordingly, as described above, the document image conversion apparatus 1 of the present embodiment reduces only the portion of the line image of the input image that does not fit in the line height of the output image.

That is, as shown in FIG. 13, the ratio of the maximum rectangular height HR in the next row to the height HL of the next row is divided into a small case and a large case. The line of the input image is stored in (output line height obtained from the rectangular height). In FIG. 13, among the examples of the output image shown in three each, in the top example, the image is scaled so that the line of the input image fits in the line of the output image. Here, the lower end of the line of the input image is aligned with the lower end of the line of the output image, and the image within the rectangle is moved for an image that does not fit in the line height of the output image. In the case of the uppermost example, there is no possibility that the content will change, but in any case, the image conversion processing is performed before the paste processing of the row image to the output image.

As described above, character image conversion apparatus 1 of the present embodiment reduces the line image of the input image according to the line height of the output image.

Therefore, it is possible to prevent the occurrence of chipping of the input image on the output image, so that the accuracy can be further improved and the visibility can be further improved.

In addition, character image conversion device 1 of the present embodiment
Moves a line image of an input image, and a rectangle exceeding the height of a line of an output image, into a line of an output image.

[0233] Therefore, it is possible to prevent the occurrence of chipping of the input image on the output image, so that the accuracy can be further improved and the visibility can be further improved.

FIG. 15 is a diagram showing a seventh embodiment of a document image conversion method, a document image conversion program, and a document image conversion device according to the present invention.
To claim 16.

This embodiment is applied to a document image conversion device similar to the document image conversion device 1 of the first embodiment. In the description of this embodiment,
The description will be made using the reference numerals used in the description of the first embodiment as needed, as necessary.

The document image conversion apparatus 1 according to the present embodiment is similar to the document image conversion apparatus 1 according to the sixth embodiment, except that a portion of the line image of the input image which does not fit in the line height of the output image is used. Only the line image is reduced, but the conversion processing of the line image is performed by a method different from that of the sixth embodiment.

That is, in the sixth embodiment, the ratio of the maximum rectangular height HR in the next row to the height HL of the next row is divided into a small case and a large case. The entire line image is reduced so that the line of the input image fits in (the output line height obtained from the maximum rectangular height). In this case, however, the character image becomes smaller, and the visibility may be reduced. .

Therefore, as shown in FIG. 15, the document image conversion apparatus 1 of the present embodiment
Reduce only the part of the output image that does not fit in the line height.

That is, the document image conversion apparatus 1 first
With reference to the lower end of the input line image, a portion where a rectangle exists at a position exceeding the height of the output line image is extracted.

In FIG. 15, the rectangular portion “n” is a portion that does not fit in the line height of the output image.

Next, the document image conversion apparatus 1 reduces the obtained area so that the height from the lower end of the input line to the upper end of the rectangle becomes the height of the output line image. In this reduction process, both the row direction and the direction perpendicular to the row may be reduced, or only the direction perpendicular to the row (the direction of the row height) may be reduced. In this way, it is possible to reduce the height of the output line while keeping the position information on the input line to some extent. As a result, more information can be displayed on fewer output images.

In the above description, the reduction processing is simply performed on the portion where the height does not fit. However, instead of the simple reduction, the reduction may be performed by removing the pixels of the background. May be reduced while saving the number.

As described above, the document image conversion apparatus 1 according to the present embodiment converts the line image of the input image to a line having character pixels exceeding the line range of the output image so as to be within the line range of the output image. It is shrinking.

Therefore, it is possible to prevent the input image from being chipped on the output image while preventing the input image from being reduced on the output image, and it is possible to further improve the accuracy. The visibility can be further improved.

Also, the character image conversion device 1 of the present embodiment
For a line having character pixels exceeding the range of the line of the output image, the background pixel of the output image is deleted to reduce the line to a size that can fit in the range of the line of the output image.

Accordingly, it is possible to prevent the input image from being chipped on the output image while preventing the input image from being reduced on the output image, and it is possible to further improve the accuracy. The visibility can be further improved.

Furthermore, the character image conversion apparatus 1 according to the present embodiment outputs an output image of a line having character pixels exceeding the range of the line of the output image while maintaining the number of foreground and background edges of the output image. Has been reduced to fit within the range of the line.

Therefore, it is possible to prevent the input image from being chipped on the output image while preventing the input image from being reduced on the output image, and it is possible to further improve the accuracy. The visibility can be further improved.

FIG. 16 is a diagram showing an eighth embodiment of a document image conversion method, a document image conversion program, and a document image conversion device according to the present invention.
To claim 20.

This embodiment is applied to a document image conversion apparatus similar to the document image conversion apparatus 1 of the first embodiment. In the description of this embodiment,
The description will be made using the reference numerals used in the description of the first embodiment as needed, as necessary.

The document image conversion device 1 according to the present embodiment obtains the height of an output image line from information of an output image.

That is, as shown in FIG. 16, when an image is input from the image input unit 21, first, the line cutout unit 2
4 divides the image into line images and cuts out the lines in the same manner as in the first embodiment (step S701), and the head position Ys in the direction perpendicular to the lines on the output image (the input line is still Initialization (Ys = 0) of the upper end position of the region where the region is not pasted (step S602). The width H of the line image is fixed to a value determined before the start of the processing.

Next, the row image arranging section 26 determines whether or not all the row images have been pasted on the output image,
It is confirmed whether the row image width Lw of the small display screen to be displayed such as A is smaller than the head position Xs in the row direction (Xs> Lw) (step S703), and the row image width Lw is smaller than the head position Xs in the row direction. Is not small (Xs ≦ Lw), the output image height Ih, which is the column image width of the small display screen to be displayed.
Is smaller than the head position Ys + H in the column direction (Ys + H
> Ih) is confirmed (step S704).

In step S704, the output image height Ih is larger than the head position Ys + H in the column direction (Ys + H ≦ I
h) At this time, the row image arrangement unit 26 sets the origin (0, 0) at the upper left of each of the row image and the output image,
The row image of (Xs, 0) (Xs + W, H) is pasted on (0, Ys) (W, Ys + H) of the output image (step S
705), Xs = Xs + W, Ys = Ys + H, H = Hn
(Step S706), the process returns to Step S703, and the same processing is performed as described above.

If the line image width Lw is smaller than the head position Xs in the line direction (Xs> Lw) in step S703, the line image arrangement unit 26 checks whether the processing has been completed for all lines (step S707). If the processing has not been completed for all the rows, the processing shifts to the processing for the next row image, Xs = 0 is set, the row image conversion is performed (step S708), and the output image height Ih is set in the column direction. (Ys + H> Ih) is checked (step S704).

In step S704, the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> I).
h) At this time, the row image arrangement unit 26 shifts to the processing of the next output image (sets to Ys = 0) (step S70).
9) Then, the process proceeds to step S705, where the output image is pasted in the same manner as described above (step S705), and Xs = X
s + W, Ys = Ys + H (step S706),
Returning to step S703, the same processing is performed as described above.

If the line image width is smaller than the head position Xs in the line direction (Xs> Lw) in step S703, the line image arrangement unit 26 checks whether the processing has been completed for all the lines (step S707). When the processing has been completed for all the rows, the output image is passed to the image output unit 22, and the image output unit 22 outputs the image to a display unit such as a PDA.
The process ends.

That is, in each of the above embodiments,
When the size of the output image is, for example, 320 × 320 pixels, when displaying 10 lines on the output image, the height of the output line is determined to be 32 pixels.

Also, in this case, a PD for displaying an output image
When a text is displayed on a device such as A and the height of one line is displayed with h pixels, the process may be performed with the output line height fixed at H = h.

In any case, if the height of the line of the input image does not match the height of the output line, the input image must be converted. This input image conversion is performed in the sixth embodiment. Alternatively, the method described in the seventh embodiment can be used.

As described above, in the document image conversion method 1 of the present embodiment, the height of each line of the output image is set based on the height of the output image.

Therefore, it is possible to prevent the input image from being chipped on the output image while preventing the input image from being reduced on the output image, and to further improve the accuracy. The visibility can be further improved.

In addition, character image conversion apparatus 1 of the present embodiment
Expands or reduces each line of the input image according to the height of the line of the output image.

Therefore, it is possible to prevent the input image from being chipped on the output image while suppressing the reduction of the input image on the output image, and it is possible to further improve the accuracy. The visibility can be further improved.

Further, character image conversion apparatus 1 of the present embodiment sets the height of each line of the output image based on the standard value of the device that displays the output image.

Therefore, it is possible to prevent the input image from being chipped on the output image while preventing the input image from being reduced on the output image, and to further improve the accuracy. The visibility can be further improved.

The character image conversion device 1 of the present embodiment
Expands or reduces each line of the input image according to the height of the line of the output image.

Therefore, it is possible to prevent the input image from being chipped on the output image while preventing the input image from being reduced on the output image, and to further improve the accuracy. The visibility can be further improved.

FIGS. 17 to 19 are diagrams showing a ninth embodiment of a document image conversion method, a document image conversion program and a document image conversion apparatus according to the present invention. This corresponds to claim 29.

This embodiment is applied to a document image conversion device similar to the document image conversion device 1 of the first embodiment. In the description of this embodiment,
The description will be made using the reference numerals used in the description of the first embodiment as needed, as necessary.

The document image conversion apparatus 1 of this embodiment is configured to paste a part of a line image of an input image onto a plurality of lines of an output image in an overlapping manner.

That is, as shown in FIG. 17, when an image is input from the image input unit 21, the line cutout unit 24 divides the image into line images and cuts out lines (step S80).
1), the head position Y in the direction perpendicular to the line on the output image
s (the upper end position of the area where the input line has not been pasted yet) is initialized (Ys = 0) (step S802).
The width H of the line image is fixed to a value determined before the start of the processing.

Next, the line image arranging section 26 determines whether or not all the line images have been pasted to the output image,
It is checked whether the row image width Lw of the small display screen to be displayed such as A is smaller than the head position Xs in the row direction (Xs> Lw) (step S803), and the row image width Lw is smaller than the head position Xs in the row direction. Is not small (Xs ≦ Lw), the output image height Ih, which is the column image width of the small display screen to be displayed.
Is smaller than the head position Ys + H in the column direction (Ys + H
> Ih) is confirmed (step S804).

In step S804, the output image height Ih is larger than the head position Ys + H in the column direction (Ys + H ≦ I
h) At this time, the row image arrangement unit 26 sets the origin (0, 0) at the upper left of each of the row image and the output image,
The row image of (Xs, 0) (Xs + W, H) is pasted on (0, Ys) (W, Ys + H) of the output image (step S
805), Xs = Xs (W−Ov), Ys = Ys + H (step S806), and the process returns to step S803 to perform the same processing as described above. Here, Ov is the overlap width.

If the row image width Lw is smaller than the head position Xs in the row direction (Xs> Lw) in step S803, the row image placement unit 26 checks whether the processing has been completed for all rows (step S807). If the processing has not been completed for all the rows, the processing shifts to the processing for the next row image, and Xs = 0 is set (step S808).
It is checked whether the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> Ih) (step S80).
4).

At step S804, the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> I).
h) At this time, the line image arrangement unit 26 shifts to the processing of the next output image (sets to Ys = 0) (step S80).
9) The process proceeds to step S805, where the output images are pasted in the same manner as described above (step S805).
805), Xs = Xs (W−Ov), Ys = Ys + H (step S806), and the process returns to step S803 to perform the same processing as described above.

If the row image width is smaller than the head position Xs in the row direction (Xs> Lw) in step S803, the row image arrangement unit 26 checks whether the processing has been completed for all rows (step S807). When the processing has been completed for all the rows, the output image is passed to the image output unit 22, and the image output unit 22 outputs the image to a display unit such as a PDA.
The process ends.

That is, as shown in FIG. 18, if the input image is pasted onto the output image without overlapping, the line may be cut off in the middle of the character and the visibility may be reduced. By processing as described above and pasting a part of the line of the input image with a predetermined overlap width to a plurality of lines of the output image as shown in FIG. 19, the visibility is not reduced. An output image can be generated.

Note that various methods can be used to determine the width of the overlap, and the easiest method is to use the height of the row image.

That is, since the height of the line image has a high correlation with the standard width of the character image, it is possible to display all the character images without cutting off by obtaining the overlap width from the height of the line image. Is high. For example, a method of overlapping by 1.2 times the row height can be used.
In this case, as the height of the row image, the row height on the input image and the output row height can be used.

Also, a method of obtaining the overlap width by referring to the size of a rectangle or a character may be used. This method
Although the processing amount increases, by performing the adjustment well, it is possible to perform the overlap processing that eliminates the break of the character with less overlap width as efficiently as possible than simply using the height of the line image. In this case, depending on the nature of the target language, etc., it is different whether the efficiency is improved if attention is paid to the width or height of the character or rectangle. For example, in the case of a Japanese document, since there are many left / right separated characters, it is often stable when the maximum value of the rectangle / character height is used.

As described above, when each line of the input image is divided at the end of the line of the output image, the document image conversion apparatus 1 of the present embodiment outputs the line image overlapping before and after the division position. I have.

Therefore, it is possible to prevent a decrease in visibility due to a line break in the middle of a character in the output image.
The visibility can be further improved.

In addition, character image conversion device 1 of the present embodiment
Sets the width of the line image to be overlapped based on the height of the line image of the input image.

Accordingly, it is possible to more appropriately prevent a line from being cut off in the middle of a character in an output image, and it is possible to further improve the visibility.

Further, character image converter 1 of the present embodiment sets the width of the line image to be overlapped based on the line height of the output image.

[0287] Therefore, it is possible to more appropriately prevent a line from being cut off in the middle of a character in an output image, and it is possible to further improve visibility.

Also, character image conversion apparatus 1 of the present embodiment
Sets the width of the line image to be overlapped based on the rectangular size of the input image in the image.

Therefore, it is possible to more appropriately and efficiently prevent a line from being cut off in the middle of a character in an output image, and the visibility can be further improved.

Further, character image converter 1 of the present embodiment sets the width of the line image to be overlapped based on the height of the rectangle in the input image.

Therefore, it is possible to more appropriately and efficiently prevent a line from being cut off in the middle of a character in an output image, and the visibility can be further improved.

Also, the character image conversion device 1 of the present embodiment
Sets the width of the line image to be overlapped based on the width of the rectangle in the image of the input image.

Therefore, it is possible to more appropriately and efficiently prevent a line from being cut off in the middle of a character in an output image, and the visibility can be further improved.

Further, the character image conversion device 1 of the present embodiment sets the width of the line image to be overlapped based on the character size in the input image.

Accordingly, it is possible to more appropriately and efficiently prevent a line from being cut off in the middle of a character in an output image, and the visibility can be further improved.

Further, character image conversion apparatus 1 of the present embodiment
Sets the width of the line image to be overlapped based on the height of the character in the image of the input image.

[0297] Therefore, it is possible to more appropriately and efficiently prevent a line from being cut off in the middle of a character in an output image, and it is possible to further improve visibility.

Further, character image conversion apparatus 1 of the present embodiment sets the width of the line image to be overlapped based on the width of the character in the image of the input image.

Therefore, it is possible to more appropriately and efficiently prevent a line from being cut off in the middle of a character in an output image, and the visibility can be further improved.

FIGS. 20 and 21 are diagrams showing a tenth embodiment of the document image conversion method, the document image conversion program and the document image conversion device according to the present invention. This corresponds to claim 31.

Note that this embodiment is applied to a document image conversion device similar to the document image conversion device 1 of the first embodiment, and in the description of this embodiment,
The description will be made using the reference numerals used in the description of the first embodiment as needed, as necessary.

The document image conversion apparatus 1 according to the present embodiment, when a part of a line image of an input image is overlapped and pasted on a plurality of lines of an output image, the width of the line of the input image and the output image Are used to determine the overlap width.

That is, as shown in FIG. 20, when an image is input from the image input unit 21, the line cutout unit 24 divides the image into line images and cuts out lines (step S90).
1), the head position Y in the direction perpendicular to the line on the output image
s (the upper end position of the area where the input line is not pasted yet) is initialized (Ys = 0) (step S902).
The width H of the line image is fixed to a value determined before the start of the processing.

Next, the line image arranging unit 26 determines whether or not all the line images have been pasted on the output image,
Whether the row image width Lw of the small display screen to be displayed such as A is smaller than or equal to the head position Xs in the row direction (Xs ≧ L
w) (step S903), and when the row image width Lw is larger than the head position Xs in the row direction (Xs <Lw), the output image height Ih, which is the column image width of the small display screen to be displayed, is set to the column. It is checked whether the head position in the direction is smaller than Ys + H (Ys + H> Ih) (step S904).

In step S904, the output image height Ih is larger than the head position Ys + H in the column direction (Ys + H ≦ I
h) At this time, the row image arrangement unit 26 sets the origin (0, 0) at the upper left of each of the row image and the output image,
The row image of (Xs, 0) (Xs + W, H) is pasted on (0, Ys) (W, Ys + H) of the output image (step S
905), Xs = Xs (W-Ov), Ys = Ys + H (step S906), the process returns to step S903, and the same processing as above is performed. Here, Ov is the overlap width.

If the row image width Lw is smaller than or equal to the head position Xs in the row direction (Xs ≧ Lw) in step S903, the row image placement unit 26 checks whether the processing has been completed for all rows (step S903). S907) If the processing has not been completed for all the rows, the processing shifts to the processing for the next row image, Xs = 0 is set, the overlap amount Ov is calculated (step S908), and the output image height is set. It is checked whether Ih is smaller than the head position Ys + H in the column direction (Ys + H> Ih) (step S904).

In step S904, the output image height Ih is smaller than the head position Ys + H in the column direction (Ys + H> I
h) At this time, the row image arrangement unit 26 shifts to the processing of the next output image (sets to Ys = 0) (step S90).
9) Then, the process proceeds to step S905, in which the output images are pasted in the same manner as described above (step S905).
905), Xs = Xs (W-Ov), Ys = Ys + H (step S906), the process returns to step S903, and the same processing as above is performed.

If the row image width is smaller than the head position Xs in the row direction (Xs> Lw) in step S903, the row image arrangement unit 26 checks whether the processing has been completed for all rows (step S907). When the processing has been completed for all the rows, the output image is passed to the image output unit 22, and the image output unit 22 outputs the image to a display unit such as a PDA.
The process ends.

That is, as shown in FIG. 21, the end of the line of the input image and the end of the line of the output image are aligned, and the interval is divided by the width of the output image, so that the half automatically becomes overlapped. As much as possible, portions can be overlapped without waste.

[0310] As described above, the document image conversion apparatus 1 of the present embodiment sets the width of the line image to be overlapped based on the width of the line image of the input image and the width of the output image.

[0311] Therefore, it is possible to more appropriately prevent a line from being cut off in the middle of a character in an output image by overlapping as much as possible without waste, and to further improve the visibility.

[0312] In addition, the character image conversion apparatus 1 of the present embodiment.
Is A, the width of the line image of the input image is A, and the width of the output image is B. If B becomes N (integer) and becomes larger than A for the first time, the width V of the line image to be overlapped is given by V = ( NB-
A) / N.

Accordingly, it is possible to more effectively prevent a line from being cut off in the middle of a character in an output image by overlapping as much as possible without waste, and to further improve visibility.

The invention made by the present inventor has been specifically described based on the preferred embodiments. However, the present invention is not limited to the above, and various modifications can be made without departing from the gist of the invention. It goes without saying that it is possible.

[0315]

According to the character image conversion method of the present invention, when aligning and outputting an input document image, the input document image is subjected to line cutout processing to generate a line image. Since the output image is generated by connecting the generated line images, it is possible to avoid such a conversion that the content is changed as in the case of using the OCR, and to be able to perceive information accompanying the document such as the background,
A document image can be efficiently displayed on a device having a limited display area such as a PDA, the number of output images can be improved, and the visibility can be improved.

According to the character image conversion method of the present invention, since the height of each line of the output image is determined based on the maximum height of the rectangle in the input image, the height of each line on the output image is determined. And the visibility can be further improved.

According to the character image conversion method of the present invention, the height of each line of the output image is determined based on the maximum height of the character in the input image. The accuracy can be made even more accurate, and the visibility can be further improved.

According to the character image conversion method of the present invention, the height of each line of the output image is determined based on the height of the input image arranged on each line of the output image.
The height of each line on the output image can be made uniform according to the height of the input image, and the visibility can be further improved.

According to the character image conversion method of the present invention, the height of each line in the output image is set to the maximum height of the line in the input image. The height can be adjusted to the maximum height of the line of the input image, and the visibility can be further improved.

According to the character image conversion method of the present invention, the height of each line of the output image is determined based on the maximum height of a rectangle included in the line of the input image arranged on each line of the output image. Therefore, the height of each line on the output image can be made equal to the maximum height of the rectangle included in the line of the input image, and the visibility can be further improved.

[0321] According to the character image conversion method of the present invention, the height of each line of the output image is determined based on the maximum height of characters included in the line of the input image arranged on each line of the output image. Since the height of each line on the output image can be adjusted to the maximum height of the characters included in the line of the input image arranged in the output image, the visibility can be further improved. it can.

According to the character image conversion method of the present invention, the height of each line of the output image is determined by the height of the line of the input image arranged on each line of the output image and the rectangle within the line of the input image. When the ratio with the maximum value of the height is close to 1, it is determined based on the maximum height of the rectangle included in the row of the input image arranged in each row of the output image, otherwise, Determined based on the height of the input image placed in each line of the output image, or because it is the maximum height of the line in the input image, the characters of the output image becomes smaller, or the position of the characters changes , It ’s possible to prevent the content of the input image from being difficult to see or change,
The visibility can be further improved.

According to the character image conversion method of the ninth aspect, the height of each line of the output image is determined by the height of the line of the input image arranged on each line of the output image and the rectangle within the line of the input image. If the difference from the maximum value of the height is smaller than a predetermined value, it is determined based on the maximum height of the rectangle included in the row of the input image arranged in each row of the output image, otherwise, Is determined based on the height of the input image placed on each line of the output image, or because it is the maximum height of the line in the input image, the characters of the output image becomes small,
It is possible to prevent the content of the input image from being difficult to see or change due to a change in the position of the character, and the visibility can be further improved.

[0324] According to the character image conversion method of the tenth aspect, the height of each line of the output image is determined by the height of the line of the input image arranged on each line of the output image and the rectangle within the line of the input image. When the ratio with the maximum value of the height is close to 1, it is determined based on the maximum height of the characters included in the line of the input image arranged in each line of the output image, otherwise,
Determined based on the height of the input image placed in each line of the output image, or because it is the maximum height of the line in the input image, the characters of the output image becomes smaller, or the position of the characters changes , It ’s possible to prevent the content of the input image from being difficult to see or change,
The visibility can be further improved.

According to the character image conversion method of the present invention, the height of each line of the output image is determined by the height of the line of the input image arranged on each line of the output image and the rectangle within the line of the input image. If the difference from the maximum value of the height is smaller than a predetermined value, it is determined based on the maximum height of the characters included in the line of the input image arranged on each line of the output image, otherwise, Is determined based on the height of the input image arranged on each line of the output image, or is set to the maximum height of the line in the input image, so that the characters of the output image become smaller or the positions of the characters become smaller. Alternately, it is possible to prevent the contents of the input image from being difficult to see or change, and the visibility can be further improved.

According to the character image conversion method of the twelfth aspect, since the line image of the input image is reduced in accordance with the height of the line of the output image, the lack of the input image on the output image. This can be prevented from occurring, and the accuracy can be further improved, and the visibility can be further improved.

According to the character image conversion method of the thirteenth aspect, the line image of the input image is moved within the line of the output image by a rectangle exceeding the height of the line of the output image. Thus, the occurrence of chipping of the input image can be prevented, the accuracy can be further improved, and the visibility can be further improved.

According to the character image conversion method of the present invention, the line image of the input image is converted to a line having a character pixel exceeding the line range of the output image. Since it is possible to reduce the size of the input image on the output image, it is possible to prevent the input image from being chipped on the output image, thereby further improving the accuracy. At the same time, visibility can be further improved.

According to the character image conversion method of the present invention, for a line having a character pixel exceeding the range of the line of the output image, the background pixel of the output image is deleted and the line of the line of the output image is deleted. Since it has been reduced to a size that fits,
While suppressing the reduction of the input image on the output image,
The occurrence of chipping of the input image on the output image can be prevented, the accuracy can be further improved, and the visibility can be further improved.

According to the character image conversion method of the present invention, for a line having character pixels exceeding the range of the line of the output image, the line is output while maintaining the number of edges of the foreground and background of the output image. Since the image is reduced to a size that fits in the range of the image line, it is possible to prevent the input image from being truncated on the output image while preventing the input image from being reduced on the output image. In addition, the accuracy can be further improved, and the visibility can be further improved.

According to the character image conversion method of the present invention, since the height of each line of the output image is set based on the height of the output image, the input image is reduced on the output image. In addition, it is possible to prevent the input image from being chipped on the output image while suppressing the occurrence of the input image, so that the accuracy can be further improved and the visibility can be further improved.

According to the character image conversion method of the present invention, since each line of the input image is enlarged or reduced in accordance with the height of the line of the output image, the input image is reduced on the output image. In addition, it is possible to prevent the input image from being chipped on the output image while suppressing the occurrence of the input image, so that the accuracy can be further improved and the visibility can be further improved.

According to the character image conversion method of the nineteenth aspect, the height of each line of the output image is set based on the standard value of the device that displays the output image. It is possible to prevent the input image from being chipped on the output image while suppressing the input image from being reduced, thereby further improving the accuracy and further improving the visibility. be able to.

According to the character image conversion method of the present invention, since each line of the input image is enlarged or reduced in accordance with the height of the line of the output image, the input image is reduced on the output image. In addition, it is possible to prevent the input image from being chipped on the output image while suppressing the occurrence of the input image, so that the accuracy can be further improved and the visibility can be further improved.

According to the character image conversion method of the present invention, when each line of the input image is divided at the end of the line of the output image, the line image is output before and after the division position so as to overlap. Therefore, it is possible to prevent a decrease in visibility due to a line break in the middle of a character in the output image, and it is possible to further improve the visibility.

According to the character image conversion method of the present invention, the width of the line image to be overlapped is set based on the height of the line image of the input image. Line breakage can be more appropriately prevented, and visibility can be further improved.

According to the character image conversion method of the twenty-third aspect, the width of the line image to be overlapped is set based on the height of the line of the output image. Can be more appropriately prevented from breaking, and the visibility can be further improved.

According to the character image conversion method of the twenty-fourth aspect, the width of the line image to be overlapped is set based on the rectangular size in the image of the input image. Line breakage can be more appropriately and efficiently prevented, and visibility can be further improved.

According to the character image conversion method of the twenty-fifth aspect, the width of the line image to be overlapped is set based on the height of the rectangle in the image of the input image. Line breaks in the middle can be more appropriately and efficiently prevented, and visibility can be further improved.

According to the character image conversion method of the twenty-sixth aspect, the width of the line image to be overlapped is set based on the width of the rectangle in the image of the input image. Can more appropriately and efficiently prevent the line from being cut off, and the visibility can be further improved.

According to the character image conversion method of the twenty-seventh aspect, the width of the line image to be overlapped is set based on the character size in the image of the input image. Line breakage can be more appropriately and efficiently prevented, and visibility can be further improved.

According to the character image conversion method of the twenty-eighth aspect, the width of the line image to be overlapped is set based on the height of the character in the image of the input image. Line breaks in the middle can be more appropriately and efficiently prevented, and visibility can be further improved.

According to the character image conversion method of the twenty-ninth aspect, the width of the line image to be overlapped is set based on the width of the character in the image of the input image. Can more appropriately and efficiently prevent the line from being cut off, and the visibility can be further improved.

According to the character image conversion method of the present invention, the width of the line image to be overlapped is set based on the width of the line image of the input image and the width of the output image. By overlapping as many parts as possible, it is possible to more appropriately prevent a line from being cut off in the middle of a character in an output image, and it is possible to further improve visibility.

According to the character image conversion method of the present invention, the width of the line image of the input image is A, the width of the output image is B, and B is N (integer) times larger than A for the first time. , The width V of the line image to be overlapped is set to V = (NB
−A) / N, it is possible to overlap lines as much as possible without waste and to more appropriately prevent a line from being cut off in the middle of a character in an output image, and to further improve visibility. Can be.

According to the character image conversion method of the present invention, when aligning and outputting input document images, a document image input device, a document image output device, and a document image conversion device connected via a network. However, since the document image conversion processing according to any one of claims 1 to 31 is performed, conversion that changes the content as in the case of using OCR is avoided, and the document such as the background is converted. While making it possible to perceive information accompanying
A document image can be efficiently displayed on a device having a limited display area such as a PDA, the number of output images can be improved, and the visibility can be improved.

According to the document image conversion program of the present invention, when the input document images are arranged and output, the document image conversion method according to any one of claims 1 to 32 is executed. While avoiding conversion that changes the content as in the case of using OCR, the document image can be displayed on a device with a limited display area, such as a PDA, while allowing information accompanying the document such as the background to be perceived. Display can be performed efficiently, the number of output images can be improved, and visibility can be improved.

According to the document image conversion apparatus of the present invention, when the input document images are arranged and output, the document image conversion method according to any one of claims 1 to 31 is used. In addition to avoiding conversion that changes the content as in the case of using, the information such as the background can be perceived with information accompanying the document.
The document image can be efficiently displayed on a device having a limited display area such as DA, the number of output images can be improved, and the visibility can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of a document image conversion apparatus to which a first embodiment of a document image conversion method, a document image conversion program, and a document image conversion apparatus according to the present invention is applied.

FIG. 2 is a circuit block diagram of the document image conversion device of FIG. 1;

FIG. 3 is a functional block diagram of the document image conversion device of FIG. 1;

FIG. 4 is a flowchart showing a document image conversion process by the document image conversion device of FIG. 3;

FIG. 5 is a diagram showing an example of an input image, an output image, and a display size of an output screen to be subjected to document conversion in the document image conversion processing of FIG. 4;

6 is a diagram showing an example of an output image and a display size of an output screen when the input image of FIG. 5 is simply divided.

FIG. 7 is a diagram showing an example of an input image and an output image in the document image conversion processing of FIG.

FIG. 8 is a flowchart illustrating a document image conversion process by a document image conversion apparatus to which a second embodiment of the document image conversion method, the document image conversion program, and the document image conversion apparatus according to the present invention is applied.

FIG. 9 is a flowchart illustrating a document image conversion process by a document image conversion apparatus to which a third embodiment of the document image conversion method, the document image conversion program, and the document image conversion apparatus according to the present invention is applied.

FIG. 10 is a view showing an example of an input image and an output image in the document image conversion processing of FIG. 9;

FIG. 11 is a flowchart illustrating a document image conversion process by a document image conversion apparatus to which a fourth embodiment of the document image conversion method, the document image conversion program, and the document image conversion apparatus according to the present invention is applied.

FIG. 12 is a flowchart illustrating a document image conversion process by a document image conversion apparatus to which a fifth embodiment of the document image conversion method, the document image conversion program, and the document image conversion apparatus according to the present invention is applied.

13 is a diagram illustrating an example of a method of determining the line height of an output image when the ratio between the maximum height of an in-line rectangle and the line height in the document image conversion process in FIG. 12 is small and large.

FIG. 14 is a flowchart illustrating a document image conversion process by a document image conversion apparatus to which a sixth embodiment of the document image conversion method, the document image conversion program, and the document image conversion apparatus according to the present invention is applied.

FIG. 15 is a diagram illustrating a document image conversion method, a document image conversion program, and a document image conversion apparatus according to a seventh embodiment of the present invention. FIG. 9 is a diagram illustrating an example of reducing only a portion that does not fit in a line height of an image.

FIG. 16 is a flowchart showing a document image conversion process by a document image conversion apparatus to which a document image conversion method, a document image conversion program, and a document image conversion apparatus according to an eighth embodiment of the present invention are applied.

FIG. 17 is a flowchart illustrating a document image conversion process by a document image conversion apparatus to which a ninth embodiment of the document image conversion method, the document image conversion program, and the document image conversion apparatus according to the present invention is applied.

FIG. 18 is a diagram illustrating an example in which an input image is pasted without overlapping with an output image and a line is cut off in the middle of a character.

FIG. 19 is a diagram illustrating an example of a case where an input image is overlapped and pasted on an output image in the document image conversion process of FIG. 17;

FIG. 20 is a flowchart illustrating a document image conversion process by a document image conversion apparatus to which a tenth embodiment of the document image conversion method, the document image conversion program, and the document image conversion apparatus according to the present invention is applied.

21 determines an overlap width by using both the line width of the input image and the width of the output image by the document image conversion processing of FIG. 20, and overlaps the input image with the output image and pastes the overlapped image; The figure which shows an example of the case.

[Explanation of symbols]

1 Document image conversion device 2 Program execution device 3 Input device 3a keyboard 4 Output device 4a display 5 Reader 5a CD-ROM drive 6 Recording media 6a CD-ROM 11 CPU 12 ROM 13 RAM 14 Hard Disk 15 Bus 21 Image input unit 22 Image output unit 23 rectangle extractor 24 line segmentation 25 Character cutout 26 line image placement unit

Claims (34)

[Claims] In a document image conversion method for aligning and outputting input document images, a line image is generated by performing line cutout processing on the input document image, and the generated line images are connected to form an output image. Generating a document image. 2. The document image conversion method according to claim 1, wherein said document image conversion method determines a height of each line of said output image based on a maximum height of a rectangle in said input image. Method. 3. The document image conversion method according to claim 1, wherein said document image conversion method determines a height of each line of said output image based on a maximum height of characters in said input image. Method. 4. The document image conversion method according to claim 1, wherein the height of each line of the output image is determined based on the height of an input image arranged on each line of the output image.
Document image conversion method described. 5. The document image conversion method according to claim 1, wherein said document image conversion method sets a height of each line of said output image to a maximum height of a line in said input image. 6. The document image conversion method according to claim 1, wherein a height of each line of the output image is determined based on a maximum height of a rectangle included in a line of the input image arranged on each line of the output image. The document image conversion method according to claim 1, wherein: 7. The document image conversion method according to claim 1, wherein a height of each line of the output image is determined based on a maximum height of a character included in a line of the input image arranged on each line of the output image. The document image conversion method according to claim 1, wherein: 8. The document image conversion method according to claim 1, wherein the height of each line of the output image is determined by a maximum value of a height of a line of an input image arranged on each line of the output image and a maximum height of a rectangle within the line of the input image. If the ratio is close to 1, it is determined based on the maximum height of the rectangle included in the row of the input image arranged in each row of the output image. Otherwise, each row of the output image is determined. Is determined based on the height of the input image placed in the
2. The document image conversion method according to claim 1, wherein a maximum height of a line in the input image is set. 9. The document image conversion method according to claim 1, wherein a height of each line of the output image is determined by a maximum value of a height of a line of an input image arranged on each line of the output image and a maximum value of a rectangular height within the line of the input image. Is smaller than a predetermined value, it is determined based on the maximum height of a rectangle included in a row of the input image arranged in each row of the output image, otherwise, the output image is 2. The document image conversion method according to claim 1, wherein the determination is made based on the height of the input image arranged in each row, or the maximum height of the row in the input image. 10. The document image conversion method according to claim 1, wherein the height of each line of the output image is set to a maximum value of a height of a line of an input image arranged on each line of the output image and a maximum value of a rectangular height within the line of the input image. If the ratio is close to 1, it is determined based on the maximum height of the characters included in the line of the input image arranged in each line of the output image. Otherwise, each line of the output image is determined. 2. The document image conversion method according to claim 1, wherein the determination is made based on the height of the input image arranged in the input image, or the maximum height of a line in the input image. 11. The document image conversion method according to claim 1, wherein a height of each line of the output image is determined by a maximum value of a height of a line of an input image arranged on each line of the output image and a maximum height of a rectangle within the line of the input image. Is smaller than a predetermined value, it is determined based on the maximum height of the characters included in the line of the input image arranged on each line of the output image. Otherwise, the output image is determined. 2. The document image conversion method according to claim 1, wherein the determination is made based on the height of the input image arranged in each row, or the maximum height of the row in the input image. 12. The document image conversion method according to claim 6, wherein the line image of the input image is reduced according to the height of the line of the output image. Document image conversion method. 13. The document image conversion method according to claim 6, wherein the line image of the input image is moved by moving a rectangle exceeding the height of the line of the output image into the line of the output image. 12. The document image conversion method according to any one of items 11. 14. The document image conversion method according to claim 1, wherein the line image of the input image is reduced to a size within a line range of the output image for a line having character pixels exceeding a line range of the output image. 6. The method according to claim 6, wherein:
2. The document image conversion method according to any one of 1. 15. The document image conversion method according to claim 1, wherein, for a line having character pixels exceeding a range of the line of the output image, a background pixel of the output image is deleted so that the size of the line falls within the range of the line of the output image. 2. The method according to claim 1, wherein the size is reduced.
4. The document image conversion method according to item 4. 16. The document image conversion method according to claim 1, wherein, for a line having character pixels exceeding a range of the line of the output image, the number of edges of the foreground and the background of the output image is maintained. 15. The document image conversion method according to claim 14, wherein the document image is reduced to a size within a range. 17. The document image conversion method according to claim 1, wherein the height of each line of the output image is set based on the height of the output image. Document image conversion method. 18. The document image conversion method according to claim 17, wherein said document image conversion method enlarges or reduces each line of said input image in accordance with a height of a line of said output image. 19. The document image conversion method according to claim 1, wherein the height of each line of the output image is set based on a standard value of a device that displays the output image. Document image conversion method according to any one of the above. 20. The document image conversion method according to claim 19, wherein said document image conversion method enlarges or reduces each line of said input image in accordance with the height of said output image line. 21. The document image conversion method according to claim 21, wherein, when each line of the input image is divided at the end of the line of the output image, a line image is output before and after the division position. The document image conversion method according to any one of claims 1 to 20. 22. The document image conversion method according to claim 21, wherein the document image conversion method sets a width of the line image to be overlapped based on a height of the line image of the input image. 23. The document image conversion method according to claim 21, wherein in the document image conversion method, a width of the line image to be overlapped is set based on a line height of the output image. 24. The document image conversion method according to claim 21, wherein in the document image conversion method, the width of the line image to be overlapped is set based on a rectangular size in the image of the input image. 25. The document image conversion method according to claim 21, wherein in the document image conversion method, a width of the line image to be overlapped is set based on a height of a rectangle in the image of the input image. Method. 26. The document image conversion method according to claim 21, wherein the document image conversion method sets the width of the line image to be overlapped based on the width of a rectangle in the image of the input image. . 27. The document image conversion method according to claim 21, wherein the document image conversion method sets a width of the line image to be overlapped based on a character size in the image of the input image. 28. The document image conversion method according to claim 21, wherein in the document image conversion method, the width of the line image to be overlapped is set based on the height of a character in the image of the input image. Method. 29. The document image conversion method according to claim 21, wherein the document image conversion method sets the width of the line image to be overlapped based on the width of characters in the image of the input image. . 30. The document image conversion method according to claim 2, wherein the width of the line image to be overlapped is set based on the width of the line image of the input image and the width of the output image.
1. The document image conversion method according to 1. 31. The document image conversion method, wherein the width of the line image of the input image is A, the width of the output image is B, and B is N
When it becomes larger than A for the first time when multiplied by (integer),
The width V of the line image to be overlapped is defined as V = (NB−A) / N
31. The document image conversion method according to claim 30, wherein: 32. In a document image conversion method for arranging and outputting input document images, a document image input device, a document image output device and a document image conversion device connected via a network are provided. 31. A document image conversion method according to any one of 31. 33. A document image conversion program for arranging and outputting input document images, wherein the document image conversion method according to claim 1 is executed. 34. A document image conversion device for arranging and outputting input document images, wherein the document image conversion method according to claim 1 is used.