Patent ID: 8391543
Filing Date: 2013-03-05
Classification: G06F,H04N

Abstract:
1. A method for preventing data leakage caused by steganography without perceptual quality degradation, comprising: processing content being transmitted from a computer, wherein the content comprises steganographic data; and before the transmission, modifying the steganographic data to corrupt hidden information within the content without perceptual quality degradation, wherein modifying the steganographic data comprises accessing carrier modification information that indicates at least one acceptable perceptual quality for the content after modification, and wherein accessing the carrier modification information comprises establishing a peak signal to noise ratio (PSNR) value, wherein the peak signal to noise ratio (PSNR) value indicates a number of bits of redundant data within the content that is to be modified in order to corrupt the steganographic data without perceptual quality degradation.