[PD] Tracking color with GEM+Pdp

Olivier Baudu lamouraupeuple at gmail.com
Mon Jun 21 18:58:45 CEST 2010

Oups oups...

---> Ubuntu 10.04 / Pd version 0.42.5-extended-rc3


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

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