[mythtv] [PATCH]Black border filter

[Buechler, Mark R]

I haven't seen the patch anywhere in my email archive for some reason..
That's why I ask. 

-----Original Message-----
From: Kristof Pelckmans [mailto:kristof.pelckmans at antwerpen.be] 
Sent: Wednesday, September 01, 2004 1:20 PM
To: mythtv-dev at mythtv.org
Subject: RE: [mythtv] [PATCH]Black border filter

You don't really need cvs : just do patch -p1 < filename in your mythtv
latest cvs tree

you can always undo with the same command...

Quoting "Buechler, Mark R" <Mark_R_Buechler at bausch.com>:

> Do you know if this has been applied yet? I'm eager to give it a go..
>
> -----Original Message-----
> From: Cedric Tefft [mailto:cedric at phreaker.net]
> Sent: Wednesday, September 01, 2004 5:24 AM
> To: Development of mythtv
> Subject: Re: [mythtv] [PATCH]Black border filter
>
> Kristof Pelckmans wrote:
>
> >Here is an implementation for an automatic aspect ratio detection filter.
> >
> >Kristof
> >
> >
> >
> Sounds like a good idea.   Unfortunately, I wasn't able to get it do to
> anything.  I was somewhat confused by the explanation of the parameters...
>
> >III. How to use
> >
> >example :
> >blackborder=0:70:76:430:18:20,blackborder=0:40:46:490:18:20
> >
> >The first filter detects a 16:9 video stream in a 4:3 capture stream 
> >and the second is for a 14:9 video stream in a 4:3 capture stream.
> >
> >The different parameters :
> >1) 0 for horizontal, 1 for vertical (not implemented)
> >2) start line
> >3) end line
> >4) 'black' pixel threshold : all pixels below this threshold will be 
> >considered as black
> >5) 'black' line threshold : minimum number of black pixels that have 
> >to be present to consider a line 'black'
> >
> >
> >
>
> There are six parameters in the example, but only five are described, 
> so after start line, I'm kinda guessing...  Could you maybe clarify 
> which parameter is missing from your explanation and what it's for?
>
> w/rt what the 'black pixel threshold' parameter:  This could use some 
> clarification.  What's the context?  What's the range?  For example, 
> is this an integer from 0 to 100, and if so, what does 0 mean, and 
> what does 100 mean?
>
> w/rt the 'black line threshold', wouldn't it be better to express this 
> as a percentage rather than a pixel count?  By using a fixed number of 
> pixels, you're tuning the filter for use with one particular 
> horizontal resolution, whereas if you use a percentage, the filter 
> adapts itself automatically to the resolution of the source material.
>
> - Cedric
>
>
>
>
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