Outline of an image

[Sreelal Hamsavahanan]

Hi ,

I am trying to develop an image processing Iphone application , which contains an option to decolorize the input image(UIImage) and then allow the user to draw different colors
over this processed Image.Is there any API available to decolorize an image or to extract only the outline of an image?.
Thanks in advance.

Regards,
Sreelal

[Pratik Goswami]

Hi,

Have you gone through Apple's sample GLImageProcessing. I am sure you will find something usefull.
In this example code Image manipulation works on OpenGL ES fundamentals.

Thanks
Pratik Goswami