Steganalysis with JPEG and GIF images

Rui Du; Larry E. Guthrie; Doug Buchy

doi:10.1117/12.526759

22 June 2004 Steganalysis with JPEG and GIF images

Rui Du, Larry E. Guthrie, Doug Buchy

Proceedings Volume 5306, Security, Steganography, and Watermarking of Multimedia Contents VI; (2004) https://doi.org/10.1117/12.526759
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

Steganalysis methods for detecting secret message embedded in JPEG and GIF images are presented in this paper. Usually, the DCT coefficients are modified when secret data is embedded to JPEG images, and the pixel indexes are changed in GIF data hiding. No matter it is the DCT coefficients or image pixel changed in data hiding, the introduced noise deteriorates the smoothness of images. For JPEG images, the change of smoothness at the block boundary is used to distinguish the clean and stego images. For GIF images, the change of smoothness between neighbor pixels is used in steganalysis. For stego GIF images created by reordering colors in the palette, we discriminate the stego and clean images by checking the palette to see if there is a pattern existing or not.

Citation Download Citation

Rui Du, Larry E. Guthrie, and Doug Buchy "Steganalysis with JPEG and GIF images", Proc. SPIE 5306, Security, Steganography, and Watermarking of Multimedia Contents VI, (22 June 2004); https://doi.org/10.1117/12.526759

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