Matlab 如何在基于移动窗口的操作中减少for循环？

如何在基于移动窗口的操作中减少for循环？我在两幅图像上使用一个15x15的窗口，并执行乘法以获得每像素的平均值

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我可能在你的循环中迷失了方向，我无法准确地阅读公式（有点模糊），但我认为这就是你想要的：

g = rand(5); %sample img1
edg = rand(5); %sample img2
windowsize = 3; %set this to 15 for real images

A = g.*edg; % multiply each element beforehand, corresponds to mu*sigma in formula
B = movsum(movsum(A,windowsize,2),windowsize,1); % get moving window sum of A, corresponds to numerator in formula
C = movsum(movsum(edg,windowsize,2),windowsize,1); % get moving window sum of edg, corresponds to denominator in formula
E = B./C; %hopefully what you wanted

Ps：您需要2016a或更新版本才能运行此功能

g = rand(5); %sample img1
edg = rand(5); %sample img2
windowsize = 3; %set this to 15 for real images

A = g.*edg; % multiply each element beforehand, corresponds to mu*sigma in formula
B = movsum(movsum(A,windowsize,2),windowsize,1); % get moving window sum of A, corresponds to numerator in formula
C = movsum(movsum(edg,windowsize,2),windowsize,1); % get moving window sum of edg, corresponds to denominator in formula
E = B./C; %hopefully what you wanted