[PD] diff frame from previous frame with Gem

[Hans-Christoph Steiner]

Your patch is pretty simple, but it seems to be that the logic of this  
operation should be based off of the frame clock rather than a delay.   
That way, the patch would work no matter the frame rate, for example.

.hc

On Mar 10, 2010, at 11:30 AM, Max wrote:

> hi hans,
>
> why so complicated? just use [pix_delay 2] and [pix_separator] to  
> feed the [pix_diff].
>
> <05a-difference.pd>
>
> taken from
> http://web.uni-weimar.de/medien/wiki/Bewegungsmelder
>
> Am 03.03.2010 um 23:39 schrieb Hans-Christoph Steiner:
>
>>
>> I am trying to make a simple patch where the current video frame is  
>> [pix_diff]'ed against the previous video frame.  I can get it going  
>> manually, but I would like it to happen every frame.  I think I got  
>> close, but did manage to create a bizarre effect:
>> <framechangetracking.pd>
>>
>>
>> .hc
>>
>> ----------------------------------------------------------------------------
>>
>> I have always wished for my computer to be as easy to use as my  
>> telephone; my wish has come true because I can no longer figure out  
>> how to use my telephone."  --Bjarne Stroustrup (creator of C++)
>>
>> _______________________________________________
>> Pd-list at iem.at mailing list
>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
>



----------------------------------------------------------------------------

Mistrust authority - promote decentralization.  - the hacker ethic