Iphone convert color image to 2bit image (black-white)

Question

I need help to convert a color image to \"black and white\", not grayscale.

I what to do this with the iPhone SDK and Core Graphics, as I\'m convinced this is possib

Answer 1

I thought I would just throw it out there that if you did not want to threshold the image, the code would look like ==>

intensity = (pixelBuffer[index] + pixelBuffer[index + 1] + pixelBuffer[index + 2]) / 3.0;

pixelBuffer[index] = (int)intensity;
pixelBuffer[index + 1] = (int)intensity;  
pixelBuffer[index + 2] = (int)intensity;