JPH07231389A - Picture data processor - Google Patents

Abstract

PURPOSE:To provide a picture data processor capable of performing picture correction best for respective emulation programs. CONSTITUTION:A picture correction device 20 applies data for correction to a part for which the correction is required among picture data 26 from a picture processor 18 and corrects the picture data 26. For the data for the correction, the optimum ones corresponding to each emulation are selected. Then, pictures are formed by a picture forming device 22 and outputted. It is possible to divide the picture data into character data and other data and correct the pictures by correction patterns suited to the respective data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image data processing apparatus for correcting an image by using it in an image processing apparatus such as a printer, a facsimile or an intelligent copy.

[0002]

2. Description of the Related Art In a conventional image processing apparatus such as a printer or a facsimile, in order to obtain a clearer image, when performing image correction, the correction pattern is switched according to the resolution of the output image. Was there.

[0003]

However, when a normal character string is printed, CAD data such as an XY plotter is output, or image data such as a photograph is output, the same image correction is performed. Therefore, it is difficult to say that the optimum correction is performed according to the type of each image data. In addition, it has not been possible to perform optimum image correction corresponding to an operation program such as emulation.

In general image data, different types of data are often mixed in one page, and if optimization of correction is performed for only one type of image data, correction of other image data is performed. Not only becomes unsuitable, but in some cases it can be harmful. Therefore,
A first object of the present invention is to provide an image data processing device capable of performing optimum image correction for each emulation program. A second object of the present invention is to perform optimum image correction for each emulation program and perform optimum image correction for each data even when a plurality of different types of data are mixed in one page. It is to provide an image data processing device capable of performing the above.

[0005]

According to a first aspect of the present invention, an image data processing device recognizes a line segment shape of a boundary portion between a black dot area and a white dot area of image data developed in a bit map form. And the line segment shape feature recognized for each required dot by this recognition unit is replaced with a plurality of bits of code information, and at least a part of the code information is used to determine whether a dot needs correction. Determination means for determining whether or not the correction is necessary for the dot determined to be corrected by this determination means, and a different image correction pattern for each emulation of the output device. Image correction pattern storage means for storing the image correction pattern, and the correction means stores the image correction pattern stored in the image correction pattern storage means. The first by performing Do correction
Achieve the purpose of.

According to a second aspect of the present invention, the image data processing apparatus according to the first aspect further comprises an adding means for adding both the image correction pattern data and the emulation program from the outside, thereby achieving the first object. To achieve. According to the invention described in claim 3, the image data processing apparatus according to claim 1 separates the font data into an area accessed when creating the page data and an area other than that, and an image correction suitable for the character data. And a means for switching an image correction pattern by image correction for other data, and the second object is achieved by correcting with an image correction pattern suitable for each area separated by the separating means.

[0007]

According to the first aspect of the invention, when the judging means judges that the correction is necessary, the correcting means corrects the image by the image correction pattern which is held in the image correction pattern storage means and which is different for each emulation. Therefore, the optimum correction can be performed for each emulation. According to the second aspect of the invention, since the adding means externally adds the image correction pattern and the emulation program, it is possible to perform a suitable correction even with the added emulation. According to the third aspect of the present invention, the separating means separates the areas of the character data and the data other than the characters, and the switching means switches and provides the correction patterns according to the respective areas. Therefore, the correction patterns are corrected according to the respective areas. be able to.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the image correction apparatus of the present invention will be described in detail below with reference to FIGS. Figure 1
FIG. 1 is a diagram showing a configuration of a printer 10 including an image data processing device according to a first embodiment of the present invention. The image processing apparatus 18 is connected to the host computer 12 via the operation panel 16 or the host interface 14.
The print data / command 24 is sent from the host computer 12 to the host interface 14. The image correction device 20 applies the correction data to the portion of the image data 26 sent from the image processing device 18 that needs correction, and corrects the image data 26. The image forming apparatus 22 forms an image based on the image data 28 corrected by the image correcting apparatus 20 and outputs output data 30.

Next, the operation of the embodiment thus constructed will be described with reference to the flow chart shown in FIG. When the operator operates the host interface 14 or the operation panel 16 to specify the emulation switching (step 10), the image processing apparatus 18 switches the emulation program (step 1).
1), the correction data prepared in advance for the image correction device 20 is switched to the optimum data according to the emulation (step 12), and the print data is received (step 13). Then, the image correction apparatus 20 determines whether or not the line segment shape at the boundary between the black dot area and the white dot area needs to be corrected from the image data developed by the image processing apparatus 18 in a bit map form. Therefore, the correction data is applied to the portion that needs correction, and image correction processing is performed so that the shape of the boundary line segment becomes smoother (step 14). The corrected image data is transferred from the image correction apparatus 20 to the image forming apparatus 22 and is output by the image forming apparatus 22 (step 15).

As shown in FIG. 2, if the image correction device 20
Is under the control of the image forming apparatus 22, the image forming apparatus 22 receives the information indicating that the emulation has been switched from the image processing apparatus 18, and switches the correction pattern data. The image correction device 20 corrects the output image data based on the changed correction pattern data.

Next, a second embodiment will be described with reference to FIG. FIG. 3 shows the printer 40 which can support an emulation program 58 of a type not prepared in the image processing apparatus 48 in the first embodiment. In this printer 40, an emulation program 58 of a type not prepared in the image processing device 48 can be added later by a memory card 54 or the like. In the printer 40, the image correction data 56 is written in the memory card 54 at the same time as the emulation program 58. When the image processing device 48 selects the emulation 58 in the memory card 54, the correction pattern data 56 is also read from the memory card 54 at the same time. Then, the image correction device 50 adds the image data +
The correction data 60 is used to correct the image data. .

Next, a third embodiment will be described in which print data is classified into character data and data other than characters so that a higher quality image can be obtained. FIG. 6 is a flowchart for explaining the procedure of the process of the third embodiment, and from step 20 to step 23, the same process as in the first embodiment is performed. Then, in the process of developing the image data by the image processing device 18, the region in which the character data (font data) is arranged and the other region are detected. Based on the range of this area, it is determined whether or not the received print data is character data (step 24). If the received print data is only character data (step 24; Y), the process proceeds to step 27 to perform image correction processing ( In step 27), the image data is output (step 28).

On the other hand, if the received print data is not only character data (step 24; N), a data area other than characters is designated to the correction device (step 25).
Then, the correction pattern for the data other than the characters is added to the pattern table, and the process of switching the correction data added by the image correction device 20 is performed. (Step 26). By this processing, it becomes possible to assign an optimum correction pattern to the character data and at the same time, make a more suitable correction to the image data other than the character. It is to be noted that the character data referred to here is, as shown in FIG. 4, image data that uses the font data 70 in the font memory, and data other than characters does not refer to the font data.
It refers to line drawing data such as and grayscale data such as photographs.

[0014]

According to the first aspect of the present invention, by changing the correction data for each emulation, it is possible to add more suitable image correction to the image pattern to be output, and obtain a high quality image output. be able to. According to the second aspect of the present invention, by supplying the emulation program and the image correction data at the same time, the optimum correction pattern can be added to the emulation added later by the user's selection, thereby improving the image quality. Is possible. According to the third aspect of the present invention, even when the character data and the print data other than the character are mixed, it is possible to apply the correction process suitable for each image pattern by dividing the area of the image data, and the printing is further performed. High quality image output becomes possible.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an image data processing apparatus according to a first embodiment.

FIG. 2 is a diagram showing a configuration of a modified example of the image data processing apparatus according to the first embodiment.

FIG. 3 is a diagram showing a configuration of an image data processing device according to a second embodiment.

FIG. 4 is a diagram showing an example in which character data and data other than character data are mixed.

FIG. 5 is a flowchart showing a procedure of processing according to the first embodiment.

FIG. 6 is a flowchart showing a processing procedure of a third embodiment.

[Explanation of symbols]

 10 Printer 12 Host Computer 14 Host Interface 16 Operation Panel 18 Image Processing Device 20 Image Correction Device 22 Image Forming Device 24 Print Data / Command 26 Image Data (Before Correction) 28 Image Data (After Correction) 30 Output Data 40 Printer 44 Memory Card Interface 46 Operation Panel 48 Image Processing Device 50 Image Correction Device 52 Image Forming Device 54 Memory Card 56 Image Correction Data 58 Emulation Program 60 Image Data + Correction Data 70 Character Data (Font Data)

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Claims (3)

[Claims] 1. A recognition means for recognizing a line segment shape at a boundary portion between a black dot area and a white dot area of image data expanded in a bit map form, and this recognition means recognizes each required dot. A determination unit that replaces the characteristic of the line segment shape with a plurality of bits of code information and determines whether or not the dot needs correction by using at least a part of the code information, and this determination unit determines that correction is necessary. The dot is provided with a correction unit that performs a correction according to the code information, and an image correction pattern storage unit that holds an image correction pattern that is different for each emulation of the output device. An image data processing device characterized by performing optimum correction for each emulation by an image correction pattern held in a correction pattern storage means. 2. The image data processing apparatus according to claim 1, further comprising an addition means for externally adding both the image correction pattern data and the emulation program. 3. An image correction pattern is switched by separating means for dividing font data into an accessed area and another area when creating page data, an image correction suitable for character data, and an image correction pattern for other data. 2. The image data processing apparatus according to claim 1, further comprising means for correcting with an image correction pattern suitable for each area separated by the separating means.