Comments (4)
@Soso-developer
你的理解是对的,14x14的最低频和7x7的最低频是不一样的,可以说7x7每个频谱“更宽”一些,我们总是把图像缩放到7x7再提取频谱的。
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@Soso-developer 你的理解是对的,14x14的最低频和7x7的最低频是不一样的,可以说7x7每个频谱“更宽”一些,我们总是把图像缩放到7x7再提取频谱的。
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
请问压缩具体是如何压缩的呢?这个操作会对图像本身频谱产生影响吗?
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@cfzd
抱歉,我搞错了,太久了都忘记了,实际上我们在提取频谱时会提取一个相对位置的频率,可以看看这部分代码:
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
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好的理解了,感谢您的回答!
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