python - Find pixel coordinates of grid intersection points -


i trying find repeatable process find coordinates of grid intersection points image. image montage of many smaller images. each 'tile' of montage has inconsistent contrast, naive methods failing (the tile boundary being selected) . small example:

montaged grid

i have had minor advances ideas explained in how remove convexity defects in sudoku square? , grid detection in matlab

however, grid lines not straight on entire image, cannot approximate grid of straight lines. familiar imagej or gatan digitalmicrograph software, if knows of simple solution. otherwise matlab/python opencv useful

my first idea: write script chop image tiles, , apply contrast normalization such clahe each one. reassemble tiles using stitching plugin linear blending option on, avoid sharp tile lines. after that, segmenting grid become easier; see imagej's segmentation page introduction.

this kind of image analysis problem better discussed on imagej forum people can throw ideas , script snippets , forth, converge on solution.


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