Sion Dalais wrote:

hi,

i am trying to make a multi colour (color!) tracker that sees red and blue seperately.

to get my head round it i thought i would just start by making a single colour tracker that i could manually switch between red and blue. i'm using the movement detection patch that came in the pd browser and trying to work with pix_blob. but even when i put red mode in and weight it to red it still seems to be quite happy to track any colour/movement at all.

any help or tips would be really helpful.

i don't know your patch.

but of course you cannot clamp the G&B channels to zero and expect that you will then see only the red color: instead remember that in RGB space, a bright red, a bright yellow and a bright magenta (and a bright white) will all have the Red channel at full-scale (so your detector will "see" red, magenta, yellow & white all the same color and detect accordingly)

mfg.asdr IOhannes