18 Dec
2004
18 Dec
'04
1:41 p.m.
chris clepper wrote:
Two things about [pix_coloralpha]: One, it does nothing on YUV data.
Two, it just averages the R,G,B values, which really doesn't correspond to anything useful. In other words, drastically different colors will give the same mask, and the only really useful values are full white or black (the only unique ones when averaging).
That's right, [pix_coloralpha] is mostly useful to create a mask with a black and white (greyscale) image.
Andrés