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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: 2011-11-30
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

[0037] Hereinafter, an image processing system according to an embodiment will be described with reference to the drawings. This image processing system decrypts an image represented by electronic data obtained by reading a medium on which an encrypted image is printed by a reading device to reconstruct the original image. Therefore, the image processing system detects a mark with a known shape and size added to the encrypted image from the image, and finds the difference between the size of the detected mark and the size of the mark set in advance. In addition, the image processing system corrects the image represented by the electronic data to reduce the difference, and then decrypts the corrected image to compensate for the deterioration of the encrypted image caused by the deterioration of the medium or the noise during reading.

[0038] In addition, in this specification, the encrypted image is simply referred to as "encrypted image".

[0039] figure 1 It is a schematic confi...

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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] The embodiments disclosed herein relate to an image processing system, an image processing device, and an image processing method that convert an image printed on a medium into electronic data, and then correct the image represented in the electronic data. Background technique [0002] In recent years, technologies have been developed to prevent the leakage of secret information recorded on printed matter. In particular, a technique has been proposed in which an image that is not expected to be seen by most people who are uncertain is encrypted in advance, and the encrypted image is printed on a medium such as paper. An encryption device that uses one of these technologies encrypts a part of an input image, and after regular conversion of the pixel value of the encrypted region, a unique pattern corresponding to the pixel value conversion is generated. In addition, the encryption device attaches positioning marks for identifying the encryption area to at l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/387
CPCG06T2207/10008G09C5/00G06T5/006G06T2207/20036H04L9/00G06T5/30G06T5/80H04N1/387
Inventor 中潟昌平仓木健介高桥润阿南泰三
Owner FUJITSU LTD
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