hi there,
i have a project of motion detection/tracking objects with Gem, but i want to extract only the red channel and track only red objects, for that, when i use [colorRGB 1 0 0] i get the red channel but my problem is, a white object has RGB values of '1 1 1' too, so it's not really efficient detection of red, i tried to use hsv color map but i couldn't figure out how pix_rgb2hsv object could be used and how to get only some 'red' not 'white also'...
if somebody have any ideas , or can tell me what i'm doing wrong, i would appreciate.
thanks

kuzu

ok, if for anyone who could be interested in the future, i figured it out with pix_alpha object:

|
| [1) [0) [1 0.3 0.3(
| | | /
| | | | [0.5 0 0(
| | | | /
[ pix_alpha ]
|

it thresholds rgb values between (0.5 0 0) and (1 0.3 0.3) so you get most of the red parts and the white parts, with like green and blue values over 0.3 are eliminated(become black)

Hi Kuzu,

I'm trying to do some color tracking in the same vain as this post. I'm not really getting there with it I know its a long time ago but I don't suppose you have a patch showing how you implemented this? Any help at all would be really appreciated.

Cheers,
John