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Image processor and image processing method

An image processing and image processing device technology, applied in image data processing, image data processing, instruments, etc., can solve problems such as inability to easily extract image differences

Active Publication Date: 2013-08-21
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, even if the alignment can be achieved, when the line spacing or the character spacing is changed, although its content remains unchanged (for example, the characters do not change), it is impossible to conveniently extract the difference of the image

Method used

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  • Image processor and image processing method
  • Image processor and image processing method

Examples

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Embodiment Construction

[0043] Now, referring to the accompanying drawings, exemplary embodiments for realizing the present invention are described below.

[0044] figure 1 A conceptual block diagram showing a structural example of the present exemplary embodiment.

[0045] A module generally refers to a logically separable part of software (computer program), hardware, or the like. Therefore, a module in this exemplary embodiment refers not only to a module in a computer program but also to a module in a hardware structure. Accordingly, the exemplary embodiments also describe computer programs, systems and methods. In this case, for convenience of description, "store", "cause to store" and terms equivalent thereto are used. When the present exemplary embodiment is a computer program, these terms mean causing a storage device to store or controlling a storage device to store. Furthermore, modules basically correspond to functions on a one-to-one basis. However, in general, one module can be form...

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Abstract

An image processor includes a partial image extracting unit, a sequencing unit and a difference extracting unit. The partial image extracting unit extracts first partial images from a first image, and extracts second partial images from a second image. The sequencing unit determines an order of the extracted first partial images in accordance with positions of the first partial images in the first image, and determines an order of the extracted second partial images in accordance with positions of second partial images in the second image. And the difference extracting unit that compares each first partial image with the corresponding second partial image in accordance with the order of the first partial images and the order of the second partial images, and extracts a difference based on the comparison between the first image and the second image.

Description

technical field [0001] The invention relates to an image processor and an image processing method. Background technique [0002] There is a need to be able to ascertain modification of a document such as addition or deletion, for example, when detecting whether a user adds a postscript to handwriting on a document using paper as a medium or when checking whether a security document is changed part. In order to meet this need, a process of reading a text and a paper document (a document to be compared with the text, that is, a document to which a postscript may be added) is performed with a scanner, and two images are compared with each other to Extract the difference. [0003] As a technique related thereto, for example, Patent Document 1 (JP-A-2004-287682) discloses, as the object of the invention, a revised image extraction device capable of preventing insufficient reduction after difference processing. Subtraction) processing takes place and can improve the accuracy of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06K9/20G06V30/40
CPCG06K9/00442G06V30/40G06T1/00
Inventor 足利英昭
Owner FUJIFILM BUSINESS INNOVATION CORP
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