人类视觉系统的matlab工具箱，包括亮度掩膜，对比度掩膜和对比度灵敏度函数的实现。是学习人类视觉系统非常好的入门材料。

调用Cheby 函数产生混沌序列，嵌入水印。嵌入提取过程完整。-Cheby call functions to generate chaotic sequence, embedded watermark. Embedded in a complete extraction process.

基于结构信息提取的图像质量评价构相似性理论是一种关于图像质量评价的新思想．与自底向上地模拟人眼视觉系统(HVS)低阶的组 成结构不同，结构相似性理论自顶向下地模拟HVS的整体功能．-Theory is a kind of image quality evaluation about the new thoughts. And the simulation of human visual system (HVS) low-level group Into different structu

基于HVS的DWT彩色图像数字水印的嵌入、提取，Matlab实现-Matlab implementation of HVS and DWT-based color image watermarking embedding and extraction