Re: "no motion" filter to drop frames

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Hi,

On Thursday 25 June 2009, Francesco Romani wrote:
> On Mon, 2009-06-15 at 11:31 -0500, Carl Karsten wrote:
> > So, anyone interested in hacking that together for me?  Or have some
> > ideas... etc.
>
> Just an Ack/KeepAlive.
>
> I'm very pressed those days, but I have strong interest in that kind of
> things (and of course the Fedora selinux bug plus the usual business).
>
> +++
>
> Given the current and future architecture of transcode, and given the
> scope and the purpose of the project, I think the implementation could
> be "just" a filter that evaluates the differences in a given sequence of
> frames and log (to a file) the frame id/timestamp on which a given
> motion measure exceed a given threshold.

A similar code is in the stabilization plugin. It detects motion of subsequ=
ent=20
frames and writes it into a file.=20
Since it uses small measurement fields one can also detect small=20
moving objects, however the code has to be modified a bit. Just a though....

This kind of motion detection would be better than a simple difference imag=
e,=20
because brightness changes and so on are no problem, but off course it is=20
slower.

Regards
	Georg

=2D-=20
=2D--- Georg Martius,  Tel: +49 177 6413311  -----
=2D------ http://www.flexman.homeip.net ----------

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