[PD] Gem image analysis

IOhannes m zmoelnig zmoelnig at iem.at
Mon May 30 17:09:05 CEST 2005


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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