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<p class=MsoNormal>Hello,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have a question in Rate Distortion Optimization (RDO) in
H.264;<o:p></o:p></p>
<p class=MsoNormal>Is always choosing a prediction mode with a finer partitions
gives less distortion than a coarser mode? Like will Inter_8x8 always gives
less distortion than Inter_16x16?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Now for RDO, I need to minimize (D + lambda*R) <o:p></o:p></p>
<p class=MsoNormal>and I know that large QP results in a large lambda thus low
bit-rate and large distortion and small QP results in small lambda thus high
bit-rate and small distortion<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Does this mean that I’ll always need to choose the
prediction mode with finer partitions to guarantee a lower distortion and what’s
the rule of the Quantization parameter (QP) based on that??? <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I’m confused between the prediction mode decision and
the changing of the QP to minimize the RDO equation.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Any feedback is really appreciated.<o:p></o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Mohsen Shaaban<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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