A Secure Perceptual Hash Algorithm for Image Content Authentication

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文件名称：A Secure Perceptual Hash Algorithm for Image Content Authentication
文件大小：849KB
文件格式：PDF
更新时间：2022-12-29 11:39:43
人工智能 算法 图像识别 算法 人脸识别 Perceptual hashing is a promising solution to image content authentication. However, conventional image hash algorithms only offer a limited authentication level for the protection of overall content. In this work, we propose an image hash algorithm with block level content pro- tection. It extracts features from DFT coefficients of image blocks. Ex- periments show that the hash has strong robustness against JPEG com- pression, scaling, additive white Gaussian noise, and Gaussian smooth- ing. The hash value is compact, and highly dependent on a key. It has very efficient trade-offs between the false positive rate and the true pos- itive rate