cropping image based on markers

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thomas chalmers
thomas chalmers 2022-2-1
评论： Image Analyst 2022-2-2
I have an aerial image that i need to crop at certain markers in the image. is it possible to crop the image between the markers in code without manually cropping the image. I have attached an example image below.TIA
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laurent jalabert
laurent jalabert 2022-2-1
Define a Region of Interest (ROI) maybe ?
DGM
DGM 2022-2-2
Today I learned that there's a size limit on attached images, but apparently not on inline images.
I was going to ask a question about the problem, but I forgot what it was sometime while waiting for the editor to open for the last ten minutes.

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Image Analyst
Image Analyst 2022-2-2
Get the mask of the white pixels then use find() and min() and max() and indexing.
[r,g,b] = imsplit(rgbImage);
whiteMask = r == 255 & g == 255 & b == 255;
[r, c] = find(whiteMask);
row1 = min(r)
row2 = max(r)
col1 = min(c)
col2 = max(c)
croppedImage = rgbImage(row1 : row2, col1 : col2, :);
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Image Analyst
Image Analyst 2022-2-2
If it worked, could you click the "Accept this Answer" link. Otherwise let me know it didn't work and I'll fix it.

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