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Sub-Pixel Edge detection plugin?

Posted by calope14 on Mar 28, 2006; 3:20pm
URL: http://imagej.273.s1.nabble.com/Sub-Pixel-Edge-detection-plugin-tp3703275.html

Hello to all,
I am doing an intensive project over the next couple weeks that is concerned with computer vision dimensional guaging. I was planning to use ImageJ for the image editing software as there are possibilities of needing to write a plugin to gather and store data about a picture.

But what I really need is a plugin that can find edges to a sub-pixel standard. All I will be doing is finding the diameter of a circular object to a sub-pixel standard. Does any one knnow of a plugin that does this. I would gladly make one but this is an area that I know little about and dont have time to do a lot of background learning. So if anyone could even let me know the steps in the procedure of sub-pixel edge detection and the names of some algorithms or processes used for them it would be a tremendous help, I have searched the internet thouroughly and there are no real clear insrtuctions for what I'm doing that doesnt cost money. I am sorry to bother you all but time is really an issue so if anyone could give me a shove in the right direction I would be most grateful.
Thank you for you time, and I wish you all luck on your current work projects.

Calvin Slope