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k_list设置问题 #22

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Yolo1-gguo opened this issue Dec 9, 2024 · 4 comments
Open

k_list设置问题 #22

Yolo1-gguo opened this issue Dec 9, 2024 · 4 comments

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@Yolo1-gguo
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尊敬的作者,请问k_list是在空间域的尺度设置吗?k_list您在源代码中设置为2,即对应的freq为2还是1/2呢?含义是否是把输入频率划分为高频(1/2,1)低频(0,1/2),那么论文中的四个频率通道是如何设置呢?感谢感谢,期待您的回复!!!

@Linwei-Chen
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感谢关注!简单来说2D频域的绝对值为[0, 1/2] * \pi,此处的2,则是将频域划分为[0, 1/2 * 1/2], [1/2 * 1/2, 1/2],4则是[0, 1/2 * 1/4], [1/2 * 1/4, 1/2],以此类推,论文中4个频道则设[2, 4, 8]即可。

@Yolo1-gguo
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好的,感谢作者的耐心解答!!请问您可以再解释一下您提到的mask吗,既然是我们人为设置划分了四段,mask是如何根据预设的频率段来筛选呢?主要是筛选这四段中,每一段的低频信息吗?还有selection map这里和mask有关系吗?感觉不是很清晰这一块,期待您的回复!!!

@Linwei-Chen
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Mask只用来分频,选择是通过conv+sigmoid的输出来对每个位置和每个频段做选择

@Yolo1-gguo
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k_list是预先划分频率,mask是在k_list分好的基础上进行分频对吗?
k_list设置为[2,4,8],对应
image
mask是来实现k_list的划分呢(达到图片所示的结果)还是说mask是分别在2、4、8这些频率段进一步划分?

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