[mythtv] Feasability of using software scalers in mythtv videoout

[matt mead]

A few years back when I was working on an html gallery generation tool, I found 
this:
http://www.cs.cmu.edu/~ph/src/zoom/

It has some very high quality scaling results, at least for what I was doing at 
the time.  I was looking for libraries to use for the image scaling (mostly 
downscaling for the purposes of thumbnails/intermediate sized images on pages), 
and realized that ImageMagick stole this code and didn't properly attribute the 
original author.  All of the algorithms here should be available in ImageMagick 
libs as well.  It might be worth mining and allowing configuration of scaling 
algorithm in the UI, that way an appropriate algorithm can be chosen that 
blends CPU use with quality.



-matt

Petr Stehlik wrote:
> Bryan Mayland wrote:
>> I'm considering the feasibility is of replacing XV's hardware scaling to 
>> zoom video playback with what could be higher quality software scalers. 
> 
>> http://capnbry.net/~bmayland/fi/pvr150/resizetest1_xv.jpg
>> http://capnbry.net/~bmayland/fi/pvr150/resizetest1_lanc.jpg
> 
> The difference is vast. I would be very interested in the software 
> scaler in Myth (got 1360x768 output resolution while having most source 
> PAL only).
> 
> Petr
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-- 
matt mead

http://collectivity.goof.com/