JP2909072B2 - Document processing method and apparatus - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a document processing method and apparatus for processing a document obtained by recognizing a character image in an image. 2. Description of the Related Art In a conventional document processing apparatus, text information is input by inputting characters written on a document using a character input device such as a keyboard while looking at the document. However, for example, when an original printed out on a recording paper or the like before is not stored in the external storage device, or when an existing original (for example, a document such as a magazine) is to be corrected,
If the document was input by the above-mentioned operation, it was not efficient in terms of time, and the burden on the operator was heavy. Therefore, by attaching a function of reading and recognizing a document to a document processing device, input of document information is left to the device itself,
There are devices designed to reduce such a burden. That is, in this type of device, the original (image data)
Is read from the scanner to perform character recognition, and then displayed on the CRT in a regular pattern of character symbols provided by the device itself. [Problems to be Solved by the Invention] However, there is a case where there is an erroneously recognized character in the document information recognized and displayed at that time, and it is difficult to determine the difference between the displayed document information and the original. However, there was still a problem in comparing the document once written on the manuscript with the displayed document, and the task of inputting the document information still had a problem. Furthermore, if a document recorded on a document contains a character symbol (for example, a mark or a special symbol) that the device itself does not have, it cannot be recognized naturally. Nevertheless, in order to create or edit a document with that character symbol,
It must be previously registered in the device itself by means of external character registration or the like. However, if a pattern of a character or symbol that cannot be recognized is processed by means of external character registration or the like, it is obvious that it is not efficient in terms of operability and time. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional technology. When a document image is edited by recognizing a character image in an input image, characters that cannot be recognized are obtained from the character image in the input image and stored. By displaying together with characters that have become recognizable using font data, it is possible to proceed to the editing operation as it is, and furthermore, by displaying characters that are recognizable or unrecognizable in an identifiable form, any of the unrecognizable characters are displayed. It is an object of the present invention to provide a document processing method and apparatus capable of notifying the user of the information and correcting the displayed characters and giving a selection instruction to use the displayed characters as they are, like a normal document. [Means for Solving the Problem] In order to solve this problem, for example, the document processing method according to the present invention includes the following steps. That is, a document processing method for recognizing a character image included in an input image and editing a document, and recognizing a character image in the input image and recognizing a character code obtained as recognizable and an unrecognizable character code The character code newly assigned to the character image that has become is stored in the document memory, the character image that has become unrecognizable is stored as font data, and the standard font data is used for the character code that becomes recognizable. The stored font data is used for the character codes that have been used and become unrecognizable, and the standard font data and the stored font data that have become unrecognizable are displayed so as to be identifiable in different forms, and stored. If a new character code was entered from the keyboard for a character displayed using font data, it was displayed as unrecognizable. Correct the character code of the character to the character code entered from the keyboard, and if the selection key is pressed for the character displayed using the stored font data, the character displayed as unrecognizable It is characterized in that the display in a different form is made the same as the standard font data so that the character code can be used as it is. Embodiment An embodiment according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a block diagram from input of a document to display in the document processing apparatus of the present embodiment. In the figure, reference numeral 1 denotes an input unit for reading a document as image data using an image scanner or the like. Reference numeral 2 denotes a buffer memory capable of storing one line of image data input by the input unit 1. Numeral 3 denotes a recognition processing unit for recognizing character symbols (hereinafter simply referred to as characters) in the image data stored in the buffer memory 2 one by one, and when recognized, a character font ROM 4 (16 in this embodiment).
The character code corresponding to the recognized character is stored in the document memory 12. 5 is video RAM (VRAM)
The image data expanded here is displayed on the display unit 6. 6 is a graphic controller (G) for displaying the image data expanded in the VRAM 5 on the display unit.
C). Reference numeral 8 denotes a dot density conversion unit for converting the image data in the buffer memory 2 which cannot be recognized by the recognition processing unit 3 into the size of a display pattern (16 × 16 dots). Reference numeral 9 denotes a sub-font memory for storing a plurality of image data converted by the dot density conversion unit 8;
It can be read in the same way as ROM4. Numeral 10 denotes an inverting unit for inverting the bits constituting the image data stored in the sub-font memory 9, and displaying the characters that have not been recognized on the display unit 7 in reverse so that the operator can recognize the characters. This is to notify that it was not done. Therefore, when the display unit supports colors, it is conceivable to display the unrecognizable image data in a different color so that it can be distinguished from the recognized character without being inverted by the inverting unit 10. . 11 is a CPU that controls the entire device
And internally stored its operation procedure (program)
ROM11a and RAM11b used as work area of CPU11
And The ROM 11a stores a program for editing a document and a program for processing shown in FIG. Reference numeral 12 denotes a document memory, which is a character code recognized and output by the recognition processing unit 3 and a character code corresponding to the character pattern stored in the sub-font memory 9 when the recognition cannot be performed by the recognition processing unit. Are sequentially stored. Therefore, when editing a document using a keyboard (not shown), the data in the document memory 12 is manipulated. Hereinafter, a description will be given of a processing procedure from reading of a document to display in the document processing apparatus of the present embodiment with reference to a flowchart of FIG. First, in step S1, one line of an original is read from the input unit 1 by an image scanner or the like, and stored in the buffer memory 2. Next, in step S2, the image data stored in the buffer memory 2 is converted into each character (A, B,
C.) is cut out into r × r dots (where r is determined by the resolution of the image scanner). Next, the cut-out image data is subjected to recognition processing in the recognition processing section 3, and the process proceeds to step S4. In step S4, it is determined whether the result of the recognition processing has been recognized as a character corresponding to the image data. If it is determined that the character has been recognized, the process proceeds to the next step S5, where the character is converted into a character code stored in a character font ROM corresponding to the recognized character. Next, in step S10, the character code is stored in the document memory 12, and the display pattern corresponding to the character code is read out from the character font ROM 4 and stored in the VRAM 5, whereby the display pattern is displayed on the display unit 7 in step S6. . Now, a case where it is determined in step S4 that recognition has not been performed will be described. For example, a case where "A" and "C" in a document are recognized and "B" is not recognized as shown in FIG. 3 will be described as an example. At this time, the process proceeds to step S7, where the image data of "B" cut out into r × r dots is 16 × 16 as shown in FIG.
A process of converting (reducing) into dots is performed. For example, a thinning process may be considered. This is because the dot density (r × r dot) of image data such as characters read by an image scanner is generally equal to the character pattern for display (in this embodiment,
This is because the image data read by the image scanner cannot be displayed on the display unit as it is because it is larger than 16 × 16 dots. Next, the image data "B" converted to 16 × 16 dots in step S8 is stored in the sub-font memory 9 so that it can be used in the same manner as the character font ROM 4. still,
The sub-font memory 9 has a capacity capable of storing a plurality of characters, and can cope with a case where there are a plurality of unrecognized characters. The image data "B" stored in this manner is coded when stored so that it can be used in the same manner as a normal character font. Thus, for example, when the code is 1000 or less, the character pattern is read from the sub-font memory, and when the code is 1000 or more, the character pattern is read from the character font ROM 4. In any case, the character code of the image data "B" is stored in the document memory 12 as document information (step S11). Further, in step S9, the bit of the image data "B" stored in the sub-font memory 9 is inverted and stored in the VRAM 5 to be displayed in step S6. The processing state at this time is shown in FIG. As can be seen from FIG. 5, the recognized characters "A", "C ..." are displayed in the normal display pattern, but the unrecognized "B" is displayed inverted. The document information input from the manuscript is displayed on the display device and stored in the document memory 12 in the above processing procedure. After the recognition processing for all the characters of the manuscript is completed, the normal document processing device is used. You can edit the document in the same way as, move the cursor to the position of the inverse character,
The characters may be correctly input from the keyboard, and if it is acceptable to do so, a selection key or the like may be pressed so as not to reverse the display. As described above, according to the present embodiment, by registering image data of a character symbol that has not been recognized as a character pattern for display, normal document editing or document creation can be performed using the character symbol. Becomes possible. Further, since the document processing can be performed without the operator creating special character symbols (marks and the like), the document processing can be performed without being conscious of the character type. Furthermore, by displaying the characters that have not been recognized on the display unit based on the input image data, the recognition efficiency when viewed from the operator side is improved. In addition, by inverting the unrecognizable character and displaying it as image data, it is possible to grasp the character that has not been recognized only on the display unit without comparing it with the original. Can be reduced. It should be noted that the present invention is not limited only to inverting a character that has not been recognized. For example, in order to distinguish the character from other recognized characters, if the display unit is color-compatible, the color is displayed. By doing so, a similar effect can be obtained. Furthermore, since the operator can freely select a correction operation for converting the image data of a character that has not been recognized into character code data, if the character shape of the document is acceptable, the image data is not encoded. It is also possible to edit. Also, by referring to the character pattern stored in the sub-font memory when recognizing the input image, it is possible to prevent the same character pattern from being stored. [Effects of the Invention] As described above, according to the present invention, when a character image in an input image is recognized and a document is edited, characters that cannot be recognized are obtained from the character image in the input image and stored. By using the recognized font data and displaying it together with the characters that can be recognized, editing can be performed as it is. In addition, by displaying characters that are recognizable or unrecognizable in an identifiable form, unrecognizable characters may eventually be displayed. Can be known, and the displayed character can be corrected and a selection instruction to use the displayed character as it is can be given as in a normal document.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a document processing apparatus according to this embodiment, FIG. 2 is a flowchart showing a processing procedure from reading and displaying an original in this embodiment, FIG. FIG. 4 is a diagram for explaining a cutout process by reading a document, FIG. 4 is a diagram for explaining a process of converting a character which has not been recognized into a dot density of a display pattern, and FIG. FIG. 4 is a diagram showing document information. In the figure, 1 ... an input unit, 2 ... a buffer memory, 3 ... a recognition processing unit, 4 ... a character font ROM, 5 ... VRAM, 6 ...
... CG, 7 ... Display, 8 ... Dot density converter, 9 ...
Sub-font memory, 10 ... Reversal unit, 11 ... CPU, 11a ...
... ROM, 11b ... RAM, 12 ... Document memory.

   ────────────────────────────────────────────────── ─── Continuation of front page       (56) References JP-A-59-121587 (JP, A)                 JP-A-60-160483 (JP, A)                 JP-A-55-49772 (JP, A)                 JP-A-55-44609 (JP, A)                 JP-A-59-5385 (JP, A)                 JP-A-60-72089 (JP, A)

Claims (1)

(57) [Claims] A document processing method for recognizing a character image included in an input image and editing a document. The method includes recognizing a character image in an input image and recognizing a character code obtained. The newly assigned character code and the newly assigned character code are stored in the document memory, the unrecognizable character image is stored as font data, and the recognized character code uses standard font data. The stored font data is used for character codes that have become unrecognizable, and the standard font data and the stored font data that have become unrecognizable are displayed in different forms so that they can be distinguished from each other. When a new character code is entered from the keyboard for a character displayed using, the character of the character displayed as unrecognizable When the select key is pressed for a character displayed using the stored font data, the character code of the character displayed as unrecognizable A document processing method characterized in that display in a different form is made the same as standard font data in order to use as it is. 2. A document processing apparatus for recognizing a character image included in an input image and editing a document. The document processing apparatus recognizes a character image in an input image and obtains a character code obtained as recognizable and a character code which is not recognizable. Storage means for storing in a document memory a character code newly assigned to a recognized character image, font data storage means for storing a character image which has become unrecognizable as font data, and a character code which has become recognizable. Uses standard font data, uses stored font data for unrecognizable character codes, and distinguishes between standard font data and stored font data that are unrecognizable in different forms. A first display control means for displaying, and a new character code for a character displayed using the stored font data from the keyboard. When input is made, a correction means for correcting the character code of the character displayed as unrecognizable to the character code input from the keyboard, and a selection key for the character displayed using the stored font data. A second display control unit configured to control the display in a different form to be the same as the standard font data when the button is pressed, in order to use the character code for the character as it is. Processing equipment.