[PD] Gem image analysis

[Max Neupert]

hi IOhannes, thomas, list

sorry for beeing unclear, pix_blob seems already too intelligent for 
what i need. i do NOT want to TRACK anything. i just want to know if 
there is ANY motion in the image and not where.
so again: it's not about tracking it is about movement.
my approch was to use pix_movement because it provides the first step 
in the analysis: removing everything what stays. but how to “measure” 
the white areas after without tracking them? i am not interested in the 
coordinates of blobs.

max




Am 30.05.2005 um 17:09 schrieb IOhannes m zmoelnig:

> Max Neupert wrote:
>> hi list,
>> how do i turn a camera in a motion sensor?
>> i can extract the movement with pix_movement, that's clear. but how 
>> to get a numeric value out of the whole picture corresponding to the 
>> pictures grayscale value?
>> (not from a single pixel like pix_data supplies)
>> am i completely overseeing something?
>
> yes:
> [pix_blob] does blob-detection (only 1 single blob though)
> there should be an example-patch on how to do movement-detection with 
> this: 04.video/03.movement_detection.pd
>
> if using the CVS is an option for you, there is [pix_multiblob] which 
> is far better (detects multiple blobs, gives more information on them)
>
> there is even an abstraction (with example-patch) for blob-tracking.
>
> mfg.ad.sr
> IOhannes
>
>
>> max
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