for 5:6:5 just get average as you are used to (your n) and use only higher 5 (or 6) bits of it for each color
[EMAIL PROTECTED] wrote: > Hello, > From theory I am assuming that in order to convert an image to its greyscale > values we get the red green and blue pixel values and find the average and > set red, green and blue components to this average value. When using rgb565 > format images where pixel values can only go from 0-31 red, 0-63 green and > 0-31 blue i am having trouble converting these to greyscale which should be > (n,n,n) where n is between 0-255. I know that 31, 63, 31 produces white, but > am unable to get any other combination that produces grey as i thought it had > to be (n,n,n) ie 31,31,31 to do so but this is not the case. Do i need to > change the screen density to 4bpp??? I actually need to convert colour images > captured from the onboard pda camera to greyscale for processing. > Any help would be greatly appreciated, > Cheers. > -- For information on using the PalmSource Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
