edge detecion on a color image

Posted by Ru Wang on Jun 13, 2007; 5:09am
URL: http://imagej.273.s1.nabble.com/edge-detecion-on-a-color-image-tp3699142.html

Dear All,

I have no idea to find the grain edges on a color image.
http://picasaweb.google.com/wangru.ustc/Image_ProcessAlbum
If you have any suggestions, I will be very appreciated.

Thanks.

Ru