This isn't something that Cocoa can do, nor would you expect it to.
You'll come to realise that this is a very complex task. My supervisor
at University developed an algorithm that did exactly what you're
describing using wavelets - in fact it was generally able to locate
any feature in an image given some typical samples of what it was
looking for, regardless of size, orientation, differences in colour,
etc. The initial algorithm took him about seven years to develop, then
another couple to make it work reasonably quickly. You should be able
to find papers on the topic, either by him or co-authored - search for
M. Banham + wavelet image processing. This work was done in the late
80s/early 90s so has probably progressed somewhat since then. The
development was even done on a Mac, using System 7 and a Mac IIfx.
cheers, Graham
On 17 Jul 2008, at 3:20 pm, Duncan Campbell wrote:
ok, this is going to be one of the weirder questions:
I'm writing an application that is designed to scan images of
people's eyes. Among other things, app needs to look at things like
the color , shape, amount of redness, size of pupil etc.
I'm looking for some pointers towards any sample code/libs that
might help me to perform this kind of image processing - for example
getting the average RBG of an image or being able to pick out a
black circle within a larger image etc.
Any ideas anyone?
Cheers for any pointers.
Duncan.
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