I am converting a grayscale signature image to thin image but not getting the desired output
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Sohail
el 17 de Sept. de 2015
Comentada: Image Analyst
el 18 de Sept. de 2015
after applying the im2bw(img,graythresh(img)) function i get the following image
but the image is not smooth enough after applying thining on the said image i get the following
so how to get rid of extra roots from the thin image and get smooth signature skeleton
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Anand
el 17 de Sept. de 2015
It looks like you need to clean up the binary image a little before thinning.
This worked for me:
bw = im2bw(img,graythresh(img));
% remove some of the noisy edges in the mask.
bw_clean = imopen(bw, strel('disk',1));
% remove small foreground objects.
bw_clean = bwareaopen(bw_clean, 25);
% invert the image and thin it.
bw_thin = bwmorph(imcomplement(bw_clean), 'thin', Inf);
9 comentarios
Image Analyst
el 18 de Sept. de 2015
imfill() will fill completely surrounded holes and leave exterior boundaries unchanged. imclose() will fill interior holes and will smooth out exterior boundaries.
Image Analyst
el 18 de Sept. de 2015
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