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Editor-in-Chief

Nikiforov
Vladimir O.
D.Sc., Prof.
Partners
EXTERNAL ATTACKS EFFECT ON DC COEFFICIENTS OF DCT MATRIX OF STILL SEMITONE IMAGES
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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