EXTERNAL ATTACKS EFFECT ON DC COEFFICIENTS OF DCT MATRIX OF STILL SEMITONE IMAGES

A. G. Korobeynikov, O. V. Mikhailichenko, N. N. Prokhozhev


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Abstract

The subject of this article is an external attacks effect on DC coefficient of semitone image DCT matrix. The goal of this analysis is a convenience determination of using DC coefficients as a data hide area for steganography algorithms. Resizing, Gaussian noise, filtering and JPEG compression are used as an external attacks.


Keywords: steganography, DCT-base algorithms, JPEG compression
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