MATLAB: How to cut out the white border in this binary image, but keep the rest

Question

I want to be able to delete the white border for the image attached, but keep everything else. How do I go about doing this?

Answer 1

Another possible way is to use bwconvfull function, like:

% Read and binarize the image
I = imread('inTT.png');
BW = imbinarize(rgb2gray(I));
% Delete white background using bwconvfull
BWConv = bwconvhull(~BW);
BW2 = BW & BWConv;