Steganalysis of Lsb Encoding in Uncompressed Images by Close Colour Pair Analysis
نویسندگان
چکیده
In this paper we have described a steganalytic tool to detect the presence of hidden message in LSB steganography. It is a stego -only attack in LSB insertion for uncompressed color images encoded in 24 bit BMP format. The detection theory is based on statistical analysis of pixel pairs using their RGB components. The necessity of a variable threshold to mark the stego images is explained .The threshold value depends on correlation between pixel pairs in terms of color components. The probability of false detection rate and false alarm rate are detected experimentally using an image database of 200 images.
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تاریخ انتشار 2004