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Image processing apparatus, image processing method and program

a technology of image processing and image processing method, applied in the field of image processing apparatus, can solve the problems of reducing preventing the good image quality from being obtained, and taking time to perform the computerization process, so as to achieve high image quality, reduce the necessary memory capacity, and improve the effect of image quality

Inactive Publication Date: 2010-03-18
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]According to the present invention, it is possible to generate a vector image with a high image quality at a high speed in a small memory capacity.

Problems solved by technology

Computerization of documents has been conventionally made, but a memory capacity necessary for computerizing the document so as to have high quality, as well as in a state of being reusable becomes large and since a great amount of calculations is required for computerizing the document, it takes time to perform the computerization process.
For the realization, it is required to restrict a data amount to be processed as many as possible, but reduction of the data amount to be processed prevents a good image quality from being obtained.
However, there is a problem that only the compression of the data can reduce the necessary memory capacity, but can not obtain a good image quality.

Method used

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  • Image processing apparatus, image processing method and program
  • Image processing apparatus, image processing method and program
  • Image processing apparatus, image processing method and program

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

Image Processing System

[0030]FIG. 1 is a block diagram showing a construction of an image processing system according to embodiments in the present invention.

[0031]The image processing system is configured of an office 10 and an office 20 each provided with various devices. The office 10 is provided with a LAN 107 built therein and the office 20 is provided with a LAN 108 built therein, and are further connected with each other through the Internet 104.

[0032]The office 10 is provided with a multifunction peripheral (hereinafter, referred to as (MFP)) 100, a management PC 101 for controlling the MFP 100, a local PC 102, a proxy server 103, a data base 105, and a document management server 106. These devices are connected by the LAN 107.

[0033]The office 20 is provided with a local PC 102, a proxy server 103, a data base 105, and a document management server 106. These devices are connected by the LAN 108.

[0034]The LAN 107 and the LAN 108 are connected respectively to the proxy servers...

second embodiment

[0086]A second embodiment is different from the first embodiment in a point of the decompressing process in an input image as the pre-process to the character contour generating process, and is common with the first embodiment in a point of the apparatus construction and the other processes. Therefore, the decompressing process which is different from the first embodiment will be mainly explained.

[0087]FIG. 6 is a flow chart showing the process flow according to the second embodiment. Since the processes of steps S 601 to S610 in FIG. 6 respectively are the processes similar to the processes of steps S301 to S310 in FIG. 3, a detail of the process at step S612 will be explained in the following.

[0088]At step S612, The MFP 100 performs a partial decompressing process for partially decompressing each of the several character object regions in the page using the object division region information obtained by the object dividing process at step S607. The processes at steps S608 and S609...

third embodiment

[0098]A third embodiment is different from the second embodiment in a point of the decompressing process of an input image as the pre-process to the character contour generating process, and is common with the second embodiment in a point of the apparatus construction and the other processes. In the second embodiment, the partial decompression is performed for each character region (each character line or each paragraph), but in the third embodiment, the partial decompression is performed for each one character in the character region. Therefore, the decompressing process which is different from the second embodiment will be explained.

[0099]The second embodiment performs the partial decompression to the one character object region. In a case of the second embodiment, when the one character object region (paragraph or character line) is large, a memory capacity necessary for the process becomes possibly insufficient, but the third embodiment can cope with such a case.

[0100]FIG. 9 is ...

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Abstract

There is provided an image processing apparatus which can generate a vector image with a high image quality at a high speed in a small memory capacity. The present invention generates an image with low resolution by performing resolution conversion to a compressed image with high resolution and obtains information of a character object with low resolution by performing object division to the image with the low resolution. The compressed image with the high resolution is decompressed and an image showing a character contour with high resolution is generated by using the information of the character object with the low resolution obtained by the object dividing and the decompressed image with the high resolution. At the time of performing the decompression, the compressed image with the high resolution may be partially decompressed based upon the information of the character object.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an image processing apparatus which performs character vectorization process to a character object recognized by an object recognition process in a case of generating vectorization data from an input image.[0003]2. Description of the Related Art[0004]For example, Japanese Patent Laid-Open No. 2002-142128 discloses an image processing apparatus configured to have the following construction as an image processing apparatus capable of generating a color document image with high quality.[0005]An input image is converted into an image with low resolution. The converted image with the low resolution is used to generate a subtractive color image, and neighboring pixels allotted to the same representative color from the subtractive color image are integrated to extract a FCR (Flat Color Region) candidate region. An image having higher resolution than the subtractive color image is used to once m...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06K15/02
CPCH04N1/3871H04N1/41H04N1/4092G06K15/1872G06V30/413G06V30/414
Inventor ITO, NAOKI
Owner CANON KK
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