The improved steganography method takes advantage of human visual system, and disucsses the differences between neighborning pixels on bit-plane block from level, upright and diagonal directions, and defines the block irregularity. Therefore, the improved method has better imperceptibility.
利用了人类视觉特性,从水平、垂直、对角线和反对角线等多个方向考虑位面小块上相邻像素的变化,根据小块复杂度的计算方法,给出了小块随机度的定义,由小块复杂度和小块随机度共同决定类似噪声小块,使改进的隐写算法具有更好的视觉隐蔽性。
参考来源 - 基于人类视觉特性的隐写技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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