Author Topic: Translating to black&white (Read 21310 times)

iago · « **on:** February 19, 2005, 05:05:15 pm »

To translate an image from color to black and white, how is that normally done? My guess is that the RGB values of each pixel averaged?

iago · « **Reply #1 on:** February 19, 2005, 06:02:57 pm »

Judging by my output (which is all plain pixels anyway), averaging the pixels works well. Gg!

Towelie · « **Reply #2 on:** February 19, 2005, 11:40:05 pm »

iago..... Its easy. Instead of RGB mode you use greyscale :-). Then when you switch it back Im pretty sure its still black and white.

iago · « **Reply #3 on:** February 20, 2005, 11:14:34 am »

I'm not talking about photoshop, I'm writing a program. I have the RGB for each pixel, but I wanted to make them into greyscale.

Towelie · « **Reply #4 on:** February 20, 2005, 08:34:41 pm »

oh well gj.

iago · « **Reply #5 on:** February 20, 2005, 08:52:56 pm »

I found a formula on some website for it:
(0.3*red) + (0.59*green) + (0.11*blue)

Apparently, that's better.

Clan x86