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Old 25th February 2003, 02:00   #1  |  Link
esby
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Basic scene change detection

If i consider a stream of frames,
what i need to do in order to perform a simple scenechange detection,
shall i work in luminance using the frame by frame difference?
or shall i use an other algo?

(The goal is to locate scenechange in a clip, for cleaning manually
the crap that may be at the scenechange...)


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Old 25th February 2003, 02:20   #2  |  Link
Belgabor
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Afaik the VCR mod of Virtualdub (iirc www.virtualdub.net) has scene change detection, perhaps you can salvage the code. VirtualDub itself has some (for the buttons), but I think that in the mod was improved.
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Old 25th February 2003, 02:31   #3  |  Link
esby
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mmm afik, the vdub buttons just offer keyframe seek,
which i can do by vfw...

I could salvage vdub or nandub scenechange algo,
but i don't want to do it actually unless it is what i need exactly


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Last edited by esby; 25th February 2003 at 02:34.
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Old 25th February 2003, 04:21   #4  |  Link
int 21h
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Virtualdub definitely has builtin scene change detection for the buttons, maybe take a look again at the buttons... Nandub simply uses that algo, with some custom additions, by the now defunct release group called 'ViRA'.
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Old 25th February 2003, 13:20   #5  |  Link
esby
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indeed, never noticed the two buttons,
(i knew there existed, but i never catched before this day what
they were doing
It might be of use for what i m doing, thanks to both of you

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Old 26th February 2003, 10:30   #6  |  Link
Nic
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Youll also probably find that some of Marc FDs and neuron2's filters have scene change detection (there Dup filters, must have it). if you want to work in YUV space...

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