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Color image processing - detect eye color  RSS feed

 
Keshini Weerasuriya
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Hi.. I need some sort of a algorithm to identify the eyes from an image and to determine the color of the eyes.. Is there algorithmns available? I'm using color images..

Can anyone help?
Tnx..
 
Ulf Dittmer
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Take a look at the image processing software ImageJ. It's used widely for biomedical purposes, and I'm sure if you ask this question on the mailing list (where some very knowledgeable people hang out), someone will be able to point you in the right direction.
 
Rick O'Shay
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Originally posted by Keshini Weerasuriya:
Hi.. I need some sort of a algorithm to identify the eyes from an image and to determine the color of the eyes.. Is there algorithmns available? I'm using color images..

Can anyone help?
Tnx..


I have to say that's a bit like asking whether there is a tool for picking up gingerbread cookie crumbs and placing them in a four-gallon plastic lined, round metal container. If somebody asked you that you might think it was a rather silly question, no?

Suffice to say shape recognition in raster images exists. Usually starts with edge detection to create a set of polygons and then to identify one the signature of, say, a mammalian eye. If the faces are fixed profiles like a DMV snapshot that's one thing; if it's a random angle at a random distance that's quite another. There is a pipeline of algorithms involved in either case, not just one. As far as determining color, well, that's the "can you raise your fist" part of the "can you climb Everest and raise your fist" question.
 
Ulf Dittmer
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The question doesn't strike me as silly at all. Pending further information from the OP to the contrary, one would reasonably assume that all the pictures in questions are takes under controlled circumstances, from, say, a few inches away. Under those circumstances, which aren't uncommon in bio-medical image processing, the problem is indeed largely one of edge detection, as Rick points out.

(In this day and age there is of course a certain probability that we are actually talking about pictures taken by an airport security camera from far away. But in that case I would hope that the people involved in the project have access to other sources of information than JavaRanch, which is, of course, an excellent source in any case. )
[ January 14, 2006: Message edited by: Ulf Dittmer ]
 
Consider Paul's rocket mass heater.
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