Convert Color Images to Gray Images Using Programming

How to convert Color Images to Gray Images

There are some techniques to do this, and below is the one of them:

To convert color image to gray image convert all pixels like this pseudo code:


PIXEL clr;
COLOR old,new;

FOR ALL clr in image DO
BEGIN
old = clr.color;
new.red = 0.5 * old.red + 0.3 * old.green + 0.2 * old.blue;
new.green = 0.5 * old.red + 0.3 * old.green + 0.2 * old.blue;
new.blue = 0.5 * old.red + 0.3 * old.green + 0.2 * old.blue;
clr.color = new;
END