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List:       theora
Subject:    [theora] NHW Image codec - improvement of precision
From:       Raphael Canut <nhwcodec () gmail ! com>
Date:       2013-11-02 15:50:49
Message-ID: CAKE58qFXd8ifs0yajHqUWM22w2DN0rCq9hd2hr2t3cRwOO2EmQ () mail ! gmail ! com
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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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<div dir="ltr"><div>Hello,</div><div> </div><div>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.</div> <div> </div><div>Update at: <a \
href="http://nhwcodec.blogspot.com/">http://nhwcodec.blogspot.com/</a> .</div><div> \
</div><div>Many thanks,</div><div>Raphael</div></div>



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