How to compare two images with iphone sdk?

Question

suppose i have taken one picture from my iphone camera and now i want to compare this image with other images and find best match image from that.

is it possible or not?

Answer 1

there is very less help available for the image processing algorithms in objectiveC, but you can go in deep with Quartz 2D and try to compare images even Image processing on the iPhone link may be helpful.