image processing - Why are there dashed lines in segments? -


i learn image segmentation using slic algorithm in matlab. after implementing algorithm on images, saw lines of segments dashed. however, can obtain straight lines on different image same parameters. required superpixel parameter 500. compactness factor 20. correct interpretation of difference?

every image different , algorithms need tweaked on image image basis. try doing simple binary threshold conversion

%matlab code imshow(my_im < 128)

with different my_im images. see different. 1 of difficult parts of computer-vision (which includes image segmentation) finding ways tune parameters automatically without trial , error type approaches


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