Patent AU-2018402494-B2 (AU)
Title: Privacy-preserving image region duplication detection method
Inventor: WENG JIAN
IPC: G06F21/30
Filed: 2018-12-14
Granted: 2020-10-22
Abstract: J- 4MAf*#Tree IN i l 
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(54) Title: IMAGE AREA COPY DETECTION METHOD SUPPORTING PRIVACY PROTECTION FUNCTION 
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BB Cipherrexr storage server side S 
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DD Cipherrexr storage server side S2 
(57) Abstract: An image area copy detection method supporting aprivacy protection function, comprising: auser side and Ninde
pendent cloud server sides. Part of the server sides is used for ciphertext storage, and the other part is used for ciphertext calculation; 
the user side splits an image into a plurality of ciphertext by using an image encryption algorithm, and the ciphertext is respectively 
transmitted to the server sides for ciphertext storage; the server sides for ciphertext storage and the server sides for ciphertext calculation 
complete detection and positioning of a copy tampering operation of an image area under a ciphertext space by means of interaction and 
calculation; finally, each server side for ciphertext storage obtains a suspected tampering area, and the server side for ciphertext storage 
sends the result to the user side. The cloud server side provides an effective area copy evidence obtaining service on the premise that 
the image content is not known, and detection and positioning of the tampering operation are realized. With respect to a conventional 
area copy evidence obtaining tool or service, the method can provide privacy protection for the image content of a user.  
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