[Mp4-tech] question ME algorithm

[sunx]

On Sun, 7 Dec 2003, Wang Hui wrote:
>
> Dear all:
>
>
>  In the MPEG-4 verification model, the full search ME is implemented.
>
>  I have embedded the FSS and LOG ME algorithm into the MPEG-4 VM,
>  but for the motion vectors obtained by the fast search methods is worse than
>  Full Search algorithm, so the number of macroblocks with type "Intra" coding
>  more than the Full Search mehtod, increasing about 1/6 compared to Full Search
>  one.
^^^^^^^
Please double check your implementation of the fast search methods. They
should be logically the same as the full search algorithm.
>
>  When no bit rate control is applied, the PSNR values of FSS and LOG method
>  are better than that Full Search method, wherear if the bit rate control is applied,
>  sometimes the PSNR value of fast searchmethods  also better than Full search method.
>
>  I want to ask whether the results is correct, if the results is resonalbe, then how to
>  compare the performance of different ME methods.
>
>
>  best regards
>
>
>  Michael
>
>
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