First of all, a macroblock-based histogramofdifference is introduced, and bits are allocated rationally among coding units according to image complexities.
本文给出了一种基于宏块的差图像直方图法,并根据图像复杂度在编码单元之间合理分配比较率。
2
Based on the Discrete Cosine Transform (DCT) coefficient histogramdifference sequences of JPEG images, a new steganalytic method was proposed to realize the steganalysis of JPEG MB2.