How to change the thickness of lines in imagesc plot?

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Namira on 3 Jul 2018
Edited: Namira on 5 Jul 2018
I plotted this figure using command
I am able to change the colors of the figure, but I can't control the thickness of the line in Figure. I would like to draw the same figure with thicker and black colored line.
How could I proceed? Thanks.

Accepted Answer

Image Analyst
Image Analyst on 4 Jul 2018
I don't know where the lines came from but if they are burned into the image, you can widen dark things by using imerode() which is a local minimum:
se = strel('disk', 4, 0);
fd = imerode(fd, se);

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