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How to delete ones in a binary vector that correspond to more than k consecutive repetitions?

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GONZALEZ DE COSSIO ECHEVERRIA Francisco Jose
评论： Ameer Hamza 2020-4-29
Given a number k and a binary vector v. How to saturate the number of consecutive repetitions of ones in v to the value k? For example, if k=3 and v=[1,0,0,1,1,0,1,1,1,1,0,0] then the output should be w=[1,0,0,1,1,0,1,1,1,0,0]. Speed of the code is highly important and no toolboxes available.
Thanks in advance

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Ameer Hamza
Ameer Hamza 2020-4-27
编辑：Ameer Hamza 2020-4-27
Try this. It uses function from image processing toolbox. You can check if the speed is acceptable
v = [1,0,0,1,1,0,1,1,1,1,0,0,1,1,1,1,1,0,1];
rgs = bwconncomp(v);
pxlList = cellfun(@(x) {(x(4:end).')}, rgs.PixelIdxList);
v([pxlList{:}]) = [];
Result:
v =
Columns 1 through 13
1 0 0 1 1 0 1 1 1 0 0 1 1
Columns 14 through 16
1 0 1
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