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The Improvement and Practice of Image Hiding Based on (t,n) Threshold

Author: MeiYang
Tutor: PengQingYu
School: Jinan University
Course: Applied Computer Technology
Keywords: Information Hiding JPG Attack techniques (t, n) threshold
CLC: TP309.7
Type: Master's thesis
Year: 2011
Downloads: 21
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Abstract


Image hiding is a information hiding technology , as opposed to traditional cryptography approach to directly encrypt important information , image information hiding technique is important information hidden in the carrier image , but in appearance , but not to change the carrier image . Cryptography is directly encrypt important information , important information is likely to expose . The appearance of image hiding technology does not change the vector data , thus becoming more covert. JPG is now the most widely used image storage format . Currently , there are a lot of JPG image format image hidden technology , they are to JPG unique characteristics of image information hidden . But for now JPG format images hidden vector image hiding technology , many researchers have also developed a corresponding attack techniques . In view of the above problems , this paper , from the perspective of the image hidden carrier proposed a FITS image hidden image vector image hidden . FITS is a format for astronomical data , compared to ordinary JPG images , specific Open . For image hiding technology attack techniques are basically the JPG format , FITS image as the image Hidden carrier image have incomparable security . In order to obtain better security , especially with (t, n) threshold image hiding scheme . (t, n) threshold a target image information stored in a specific way n images , where t or t parcels carrier image above information can completely restore the original image information . In this way, even if the minority carrier image is missing or is attacked destruction , it can restore the original image information . Thus, the entire image hiding technology more security . In the use of the technology at the same time , a slight improvement on the existing algorithm of hidden , so as to get a better image hiding efficiency . Will also join the parity technology , in order to obtain a better image recovery effect .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality > Encryption and decryption
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