[PD] Tracking color with GEM+Pdp

Olivier Baudu lamouraupeuple at gmail.com
Mon Jun 21 18:54:21 CEST 2010

I forgot to say it, but, of course I use [pix_blob] at the end of my GEM

2010/6/21 Olivier Baudu <lamouraupeuple at gmail.com>

> Hi,
> I would like to track different colors at the same time with my web cam so
> I've try different way.
> I begun in GEM with [pix_movement] and/or [pix_alpha] and/or
> [pix_background]. It was quite good until I wanted only one tracking.
> With two, it begun more complicate to configure [pix_alpha] in RGBA to
> dissociate the spots.
> So, I've tried [pdp_ctrack] which is very powerful but in some situations
> it would be better to process only with moving pixel.
> I thought [pix_2pdp] would be the solution to use [pix_movement] before
> [pdp_ctrack] but it seem not to work with [pix_video] in RGBA colorspace,
> and in YUV I loose the color information after the [pix_movement] process...
> (By the way, I can't have simultaneously my webcam in GEM and in Pdp with
> [pix_2pdp], but, maybe, it's normal)
> What can I do ?
> Is there a [pix_movement] for Pdp I didn't find yet ?
> Is there a way to chose precisely the color to configure [pix_alpha] ?
> (maybe by converting the colorspace  with
> [pix_rgb2hsv] but what to do after ?).
> Of course, if you have a solution for tracking color without answering my
> questions, I'm still interested. :-p
> Thanks.
> 01ivier
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