Matlab - 为什么我会收到此错误

Question

I have typed the following in matlab :

>> I=imread('23X41.jpg');
>> fun = @(x) sum(x(:).^2)/sum(x(:)).^2; 
>> en= nlfilter(I,[4 4],fun);

And, got the following error?

??? Error using ==> plus
Matrix dimensions must agree.

Error in ==> nlfilter at 52
aa = mkconstarray(class(a), padval, size(a)+nhood-1);

Why am I getting this error especially that I'm sliding a 4x4 window on a 23x41 image? Why are the matrix dimensions mentioned here?

Thanks.

Answer 1

确保您的图像是2D而不是3D阵列的彩色图像。