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• W2892830530 abstract "This article describes how the existing distortion functions for JPEG steganography allot same cost for ±1 embedding changes. Because of the correlation of natural image, however, changes with different polarities make different influences on image. Therefore, the embedding costs for ±1 embedding changes should not be equivalent. This article proposes a general method to distinguish the embedding costs for different polarities of embedding changes for JPEG images with the help of reference images constructed by block artifact compensation. The original JPEG image is decompressed into spatial domain firstly, and then the block artifact is compensated by smoothing filtering implemented on border pixels of each 8 × 8 block. After that, the compensated image which is more similar to the original uncompressed image is recompressed into DCT domain and adopted as side information to guide the adjusting of the given distortion function. Experiment results show that after the proposed method is employed, the security performance of current popular JPEG steganographic methods is observably increased." @default.
• W2892830530 created "2018-10-05" @default.
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• W2892830530 date "2019-01-01" @default.
• W2892830530 modified "2023-10-05" @default.
• W2892830530 title "Asymmetric Distortion Function for JPEG Steganography Using Block Artifact Compensation" @default.
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• W2892830530 doi "https://doi.org/10.4018/ijdcf.2019010107" @default.
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