中文说明：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。
English Description：
The Matlab toolbox of human visual system includes the realization of brightness mask, contrast mask and contrast sensitivity function. It is a very good starting material for learning human visual system.