find endpoint coordinates(x,y) of connected components using pixelidxlist

조회 수: 2 (최근 30일)
sufian ahmed
sufian ahmed 2017년 6월 10일
댓글: Walter Roberson 2017년 6월 11일
raw_image:
*
*
CC = bwconncomp(zz_out);
numPixels = cellfun(@numel,CC.PixelIdxList);
figure, imshow(zz_out);
[smallest,idx] = min(numPixels);
zz_out(CC.PixelIdxList{idx}) = 0;
  • I have an image which has some concurrent connected components, say as: line segments.Now i want to extract all the endpoint's coordinates(x,y) of those lines using pixelidlist.*

답변 (1개)

Walter Roberson
Walter Roberson 2017년 6월 11일
bwmorph() and ask for 'endpoints'
  댓글 수: 3
sufian ahmed
sufian ahmed 2017년 6월 11일
편집: sufian ahmed 2017년 6월 11일
can u provide me the demo code please, Thanks :)
Walter Roberson
Walter Roberson 2017년 6월 11일
[L, Num] = bwlabel(zz_out);
for K = 1 : Num
[epr{K}, epc{K}] = find( bwmorph(L == K, 'endpoints') );
end
Now epr{K} is the list of row indices of all of the endpoints of component #K, and epc{K} is the corresponding list of column indices. Any component that is not an isolated pixel should have at least two endpoints, and could have more if there are branches in it. (Note, though: I do not know how endpoint detection works if there are loops in the component.)

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