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WindowSize 选项在 vl_phow 函数中告诉我们什么?
mathworks 文档说它以空间箱为单位给出了高斯窗口的大小,但我不太清楚如何
http://www.vlfeat.org/mdoc/vl_phow.html
高斯函数扩展到无穷大,它必须在某个点被截断。窗口是这些边界内的区域。我认为“窗口”这个词非常直观。
http://en.wikipedia.org/wiki/Window_function