[PD] Simple motion analysis

[Hans-Christoph Steiner]

Sorry, you said simple, so that's a simple start :)  For making the  
distinction between people walking and standing in place, a simple  
thing would be to bump up the threshold of what counts as movement.   
Another would be to do multi-blob detection and look for x,y movement  
in a direction, or that exceeds a certain threshold.  Check the  
'mapping' library (included in Pd-extended) for an array of techniques  
of working with the data that will most likely be helpful here.

.hc

On Oct 17, 2011, at 1:29 PM, Jean-Marie Adrien wrote:

> Thanks
> I knew the examples obviously !
> Ill try with these objects though.
> Making the distinction between on-place-motion and across-frame  
> motion thus ... in a simple way.
> JM
>
>
>
> Le 17 oct. 11 à 18:26, Hans-Christoph Steiner a écrit :
>
>>
>> Check the Gem examples, in Pd-extended go to:
>>
>> Help menu -> Browser -> Gem -> examples 04.video
>>
>> See:
>>
>> 06 frame diff
>> 07 bg subtract
>> 03 movement
>>
>> .hc
>>
>> On Oct 17, 2011, at 11:33 AM, Jean-Marie Adrien wrote:
>>
>>> Hi list
>>>
>>> Video frame analysis : I would like to be able to make a  
>>> difference between
>>>
>>> - motions of poeple passing by (displacements)
>>> - motions of poeple standing by somewhere (and slightly moving on  
>>> place, presence)
>>>
>>> in a simple way ...
>>> anyone got an idea of with what pix_objects to start ?
>>>
>>> thanks
>>> jean-marie
>>>
>>>
>>>
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>>
>>
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>>
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>>
>>
>



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