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关于7X7频域的问题 #43
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@Soso-developer |
看到您讲的:“我们总是把图像缩放到7x7再提取频谱的”,也就是说不同大小图像均需要压缩到7X7 |
@cfzd Lines 38 to 41 in aa5fb63
所以当我们提取最低频时,在7x7的图上是(1,1)这个位置,而在14x14的图上是(2,2)这个位置 |
好的理解了,感谢您的回答! |
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大于7X7大小的图像,是如何选取在某个频域上的值呢?
例如:1414大小图像经过dct得到1414的dct结果,如果选取最低频的分量,那么实际的选取是,最左上角的2*2大小结果的平均值吗?
没有理解代码里的计算方式,希望得到答疑
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