Basic scene change detection

esby · 25th February 2003, 02:00

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...)

esby

Belgabor · 25th February 2003, 02:20

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.

esby · 25th February 2003, 02:31

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

esby

int 21h · 25th February 2003, 04:21

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'.

esby · 25th February 2003, 13:20

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

esby

Nic · 26th February 2003, 10:30

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...

-Nic

25th February 2003, 02:00	#1 \| Link
esby Registered User Join Date: Oct 2001 Location: france Posts: 521	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...) esby

25th February 2003, 02:20	#2 \| Link
Belgabor VDubMod Devel Join Date: Oct 2001 Location: Germany Posts: 824	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. __________________ VirtualDubMod [SourceForge : Tracker/DL] (FAQ, Some rules) Be sure to also download the latest DLL package or get the all inclusive package! Before you post questions, please read the VirtualDub and/or VirtualDubMod FAQ. If you have a bug report or feature request for VirtualDubMod, be sure to read the rules first. We give 100% of your donations to the Open Source community

25th February 2003, 02:31	#3 \| Link
esby Registered User Join Date: Oct 2001 Location: france Posts: 521	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 esby Last edited by esby; 25th February 2003 at 02:34.

25th February 2003, 04:21	#4 \| Link
int 21h Still Laughing Join Date: Oct 2001 Location: Around Posts: 1,312	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'.

25th February 2003, 13:20	#5 \| Link
esby Registered User Join Date: Oct 2001 Location: france Posts: 521	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 esby

26th February 2003, 10:30	#6 \| Link
Nic Moderator Join Date: Oct 2001 Location: England Posts: 3,285	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... -Nic