shawnfu

图中两只小三角形的颜色是完全一样的。但对大多数人来说它们看上去是不一样的，这是因为大三角形的黄色和蓝色影响了人们的感觉。大脑在理解颜色的时候，会将背景也考虑进去。
http://jifanghua.blogbus.com/logs/2004/02/84111.html


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