bwclearborder 1.0

This function removes white (true) objects touching the border of a 2 or 3-dimensional logical image. It produces the same result as IMCLEARBORDER and has the same syntax. It's just faster!NOTE: The more sparse the image is, the faster this function is compared to IMCLEARBORDER.%% Speed and Equality Comparisontim = zeros(3,1); %time for imclearbordertbw = zeros(3,1); %time for bwclearborderidx = 0;for n = [10 100 250] %side length of 3d volume idx = idx+1; A = rand(n,n,n)>.75; t1 = 0; t2 = 0; for ii = 1:5 tic I = imclearborder(A); t1 = t1+toc; tic B = bwclearborder(A); t2 = t2+toc; end tim(idx) = tim(idx)+t1; tbw(idx) = tbw(idx)+t2;endisequal(I,B)%{ ans = 1%}tbw%{ 0.0086875 1.033 19.462%}tim%{ 0.055181 5.3955 87.671%}tbw./tim%{ 0.15744 0.19145 0.22198%}

Requirements:	No special requirements
Platforms:	Matlab
Keyword:	Btoc,  Bwclearbordera,  Idx,  Imclearbordera,  Randnnngt,  Tbwidx,  Timidx,  Volume
Users rating:	0/10