This example requires about 13% as much time as misusing roifilt().
Is there any correlation kernel that keeps the roi of an image while removes the remained pixels?
Prashant Kumar answered . 2024-05-17 19:30:45
% a single-channel image
inpict = imread('cameraman.tif');
% a logical mask
mask = imread('sources/standardmods/cman/cmantifmk.png')>128;
% invert the mask and use a zero-valued kernel
%outpict = roifilt2(0,inpict,~mask);
% invert the mask and use a function handle which returns a
% zero-valued array of the same size and class as the image
outpict = roifilt2(inpict,~mask,@(x) 0*x);
% presuming the following: % mask is logical-class % image is not signed-integer class % mask and image have same number of channels outpict = inpict; outpict(~mask) = 0;
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