说明：  这是一篇关于计算机视觉中一个非常生要领域，人类视觉注意机制的一篇经典文献。从祥细地阐述了人类视觉的注意机制，对于从事计算机视觉关注意方面的作者很有帮助
(this is a paper about attention in computer vision which is a important research field. it desrcipts in detail the attention about human and can offer much help to the researchers in the field.)