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Image processing system, image processing device, and image processing method

An image processing and image technology, applied in image data processing, transmission system, image enhancement, etc., can solve problems such as image quality degradation

Active Publication Date: 2013-12-18
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the image quality of the decrypted original image may decrease

Method used

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  • Image processing system, image processing device, and image processing method
  • Image processing system, image processing device, and image processing method
  • Image processing system, image processing device, and image processing method

Examples

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Embodiment Construction

[0036] Hereinafter, an image processing system according to an embodiment will be described with reference to the drawings. This image processing system reconstructs an original image by decrypting an image represented by electronic data obtained by reading a medium on which an encrypted image is printed by a reading device. Therefore, this image processing system detects a mark of known shape and size attached to an encrypted image from an image, and obtains a difference between the size of the detected mark and the size of the mark set in advance. In addition, the image processing system corrects an image represented by electronic data so that the difference becomes small, and then decrypts the corrected image to compensate for degradation of the encrypted image due to degradation of the medium or noise at the time of reading.

[0037] In addition, in this specification, an encrypted image is simply referred to as an "encrypted image".

[0038] figure 1 is a schematic conf...

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Abstract

An image processing system includes: an image input unit which reads an image printed on a medium and generates electronic data representing the image; and a processing unit which corrects the image represented by the electronic data. The processing unit implements the functions of: detecting, from the image represented by the electronic data, a first pattern having a first size and shape that is attached to the image; measuring a degree of degradation by measuring an amount of displacement of the size of the detected first pattern from the first size; and correcting the image represented by the electronic data to reduce the degree of degradation.

Description

technical field [0001] Embodiments disclosed herein relate to an image processing system, an image processing device, and an image processing method for correcting an image expressed in electronic data after converting an image printed on a medium into electronic data. Background technique [0002] In recent years, techniques for preventing leakage of confidential information written on printed matter have been developed. In particular, a technique has been proposed in which an image that is not intended to be seen by an uncertain majority is encrypted in advance, and the encrypted image is printed on a medium such as paper. An encryption device using one of these techniques encrypts a part of an input image, and performs regular conversion on the pixel values ​​of the encrypted area to generate a unique pattern corresponding to the pixel value conversion. In addition, the encryption device attaches positioning marks for specifying the encryption area to at least two of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/387
CPCG06T5/30G09C5/00G06T2207/20036G06T5/006H04L9/00G06T2207/10008H04N1/387
Inventor 中潟昌平仓木健介高桥润阿南泰三
Owner FUJITSU LTD
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