Image Topology 349
apply the distance transform to approximate distances from the region containing 1’s
to all other pixels in the image, using the masks:
(i)
1
1 0 1
1
(ii)
1 1 1
1 0 1
1 1 1
(iii)
4 3 4
3 0 3
4 3 4
(iv)
11 11
11 7 5 7 11
5 0 5
11 7 5 7 11
11 11
and applying any necessary scaling at the end.
28. Apply the distance transform and use it to find the skeleton in the images
circles2.png
and nicework.png.
29. Compare the result of the previous question with the results given by the Zhang-Suen
and Guo-Hall methods.
Which method produces the most visually appealing results?
Which method seems fastest?
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