i want matlab code for pruning the skeletonized image to remove the unwanted branches.

Only the main branch should result as a result of pruning.

Answer 1

[Walter Roberson]

See bwmorph with the 'spur' option.

[manoj m]

i applied spur operation to this thinned image http://imageshack.us/photo/my-images/194/38936107.png/ and with no. of operation(n) is set to 7, i obtained this image http://imageshack.us/photo/my-images/109/63174203.png/. It can be seen that the main branch also gets removed to some extend.At n=7 only the side branch completely diasappears. as n is increased further main branch starts deteriorating. Is there any other method by which i can remove only the side branch.

[Walter Roberson]

http://www.mathworks.com/help/images/ref/bwareaopen.html might help, possibly, but not until the connecting links were broken.

Answer 2

[Maziyar]

Take a look at following link:

http://www.mathworks.com/matlabcentral/fileexchange/11123-better-skeletonization