how to get UIImage Pixel data value?

Question

how to get UIImage Pixel value?

If i clicked on the UIImage it need to display the pixel data.

I draw using mouseMoved event some part on image with red color.

When i clicked on red color drawn part, it need to display color value 1,0,0,1.

Can any one tell me.

Thanks in advance.

Answer 1

This seems to be a near duplicate question to this one: http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone

Answer 2

http://www.markj.net/iphone-uiimage-pixel-color/

from the above link... I downloaded the source code. It works good.....

When I am trying with different image. I do not getting exact pixel value.

What to do to get exact pixel value .....?

Thanks in advance....