[mythtv-users] Commflag - Logo detection position

Alexandre Gagné borntoplay at console.qc.ca
Mon Jan 5 18:01:57 UTC 2009



Le lundi 05 janvier 2009 à 09:50 -0800, Brad DerManouelian a écrit :
> On Jan 5, 2009, at 9:47 AM, Brian Wood wrote:
> 
> > On Monday 05 January 2009 10:10:36 Brad DerManouelian wrote:
> >> On Jan 5, 2009, at 8:56 AM, Alexandre Gagné wrote:
> >>> Hi !
> >>>
> >>> For commercial flagging, I had some success with "all
> >>> method" (including logo detection), but my problem is that sometime,
> >>> there is a commercial with the channel logo, but in a different  
> >>> corner
> >>> (like to advertise that it's from that network, the logo appears on
> >>> the
> >>> imagine somewhere).
> >>>
> >>> My question is, is there a way to make the "logo detection" checks
> >>> only in a specific corner ?  In my case, I need the detection to  
> >>> look
> >>> only in the lower right corner of the image, any other place would  
> >>> be
> >>> "false positive".  The only time I have commercial "unflagged" is  
> >>> when
> >>> the logo appears on the left side.
> >>
> >> No, there is no such option.
> >
> > Just a note:
> >
> > The network would never put a logo on commercial material (the  
> > advertiser is
> > paying for the entire screen, and won't share it). Notice that even  
> > CNN drops
> > their "crawl" during commercials.
> >
> > The material you are talking about is "promotional", or otherwise  
> > belongs to
> > the network. It is not "advertising" as far as the FCC is concerned,  
> > and is
> > logged as "PR" (promo) and not "CA" (commercial announcement).
> >
> > So the commflagger is actually doing its job correctly, in  
> > identifying CA
> > material. The problem is that you do not want to watch PR stuff  
> > either, but
> > that's another issue.
> 
> I believe this is happening outside of the USA and the network might  
> actually be overlaying their bug on commercials.

Brian is right, this is PR.  I didn't knew the name of "network own
advertisement".  Those are adds of other shows that play on that
network, and produced by the network.  But the logo doesn't appears
where it is during the show, it is shown in another corner, that's why I
was asking if there was a way to limit the scan to a portion of the
screen.  But as Brad says, it seems there is no such option.

Is there any suggestion to by-pass promo with humain interaction ? (I
presume it would be hard to do automagicly, but I risk to ask
anyway ;) )

Thanks for the help !



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