[mythtv] Re:Help needed testing logo detection code

Chris Pinkham cpinkham at bc2va.org
Mon Mar 24 18:09:05 EST 2003


I'll try to get a small .nuv tomorrow and put it up online so you can give
it a shot.  My cablemodem has been down for the past 3 days so I'm running
off a backup 28.8K modem connection at home right now.  It's a dedicated
24x7 connection with static IP but slowwwwwwwwwww.

> Yeah, I looked at this site from when it was mentioned in a post before, this 
> is pretty much that code, you need to make a decision on 'how bright is 
> bright' else you can't decide what is a logo and what isn't.
> 
> Could you dd out a few megs of one of the failing NUVs for me please?
> 
> Cheers,
> Liam
> 
> > I tested this on both the FOX network here on an episode of That 70's Show
> > and on an episode of NBC's Law & Order and it didn't detect either logo.
> > The NBC one was transparent and the FOX logo was pure white in some parts
> > and transparent in others. Both logos occurred in the lower right hand
> > corner of the video.
> > 
> > I think you might want to take a look at the following paper describing
> > some ways to do logo detection. I think they'd be more accurate than
> > your current method of just checking for X pixels that are of a certain
> > brightness. The paper even has some code snippets.
> > 
> > http://toonarchive.com/logo-detection/

Chris

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** Chris Pinkham                  Linux v2.2.18, Sane v1.0.4, Cajun v3.0-8 **
** cpinkham at bc2va.org                          http://www.bc2va.org/chris/ **
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