[MEncoder-users] issues for time-lapse video encoding

[DaveG]

On Monday 18 May 2009, Hugh Secker-Walker wrote:
> 2) I want to do some filtering of the resulting video.  In particular,
>    it would be nice to remove all the objects, e.g. birds, that appear
>    in only a single frame.  I can imagine that some sort of median
>    filter would do the job (e.g. median for each pixel across 7
>    frames).  What should I be looking at for this kind of filtering?
>    It's a kind of denoising, but the extent of the noisy object can be
>    quite large, but always only for a single frame.

Some years ago, I saw a program which could do exactly that.  Unfortunately I 
can't remember what it was called or where on the interwebs I saw it.

IIRC it was some sort of acedemic project, the software being free.  I 
honestly can't even remeber if it was *nix or Windows based but suspect it 
was *nix based.

The object of the project was to take multiple substantively identical images 
and remove the diferences, particularly for photographers wanting to take 
photos and remove the people, eg take half a dozen trpid mounted shots of a 
building, run them through the programme and the moving people 
would "magically" disappear as they are not in all of the images.

Another example given was photos taken from a bridge over a road.  He took 
multiple shots, processed them through his program and ended up with a photo 
of an empty road.

I would dearly love to find this program again, especially if it is *nix 
based, not Windows based.

-- 
Dave