Re: examining images
Re: examining images
- Subject: Re: examining images
- From: Allan Schaffer <email@hidden>
- Date: Thu, 17 Jul 2008 09:31:27 -0700
Hello Duncan,
On Jul 16, 2008, at 10:20 PM, Duncan Campbell wrote:
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.
You would use the Core Image framework to do this. We have an example
online:
http://developer.apple.com/samplecode/CIColorTracking
"The CIColorTracking sample application is an Objective-C applicaton
that implements a GPU-based technique to find the location of a
uniquely colored object in a scene and then uses the position
information to apply video effects."
The algorithm is described in the latest GPU Gems (#3), chapter 26:
Object Detection by Color: Using the GPU for Real-Time Video Image
Processing
Ralph Brunner, Frank Doepke, Bunny Laden - Apple
Enjoy,
Allan
___________
Allan Schaffer
Graphics Evangelist
Worldwide Developer Relations
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