MATLAB: Imerode and imopen

imerodeimopen

What is the difference between imerode and imopen ?

I suggest you grab a book on image processing and look up morphological operations.

Opening is an erosion followed by a dilation.

Similarly closing is a dilation followed by an erosion.

https://en.wikipedia.org/wiki/Kernel_Fisher_discriminant_analysis

one way

I = imread('1JK5Q.png');
BW = ~im2bw(I,.8);
BW1 = imdilate(BW,ones(1,4));