hi i have an image which i can get RGB values, i have to quantitize it , a new to this i think i know the principle but need a few pointers as to how to go about "mapping" the image to a range of colours. basically i am doing a grey scale whic works but on colours not black thru to white it is greying only slightly. so i need to reduce the colour values.
hope someone can help.
regardes
ash