NHW Image codec - improvement of precision

Raphael Canut <[email protected]> Sat, 2 Nov 2013 16:50:49 +0100
Newsgroups gmane.comp.multimedia.ogg.theora.general
Message-ID <CAKE58qFXd8ifs0yajHqUWM22w2DN0rCq9hd2hr2t3cRwOO2EmQ@mail.gmail.com>
Hello,

For those interested, I improved a little the NHW codec.Now I apply a
(fast) sharpening on U and V components before the 2x2 upsampling in the
decoder, which results in a better upsampling (+0.1dB for the PSNR...)
and gives a better precision to the image.I have also improved the
dequantization in the wavelet HH band.

Update at: http://nhwcodec.blogspot.com/ .

Many thanks,
Raphael

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