[M4IF Technotes] Re: motion estimation, please advise

[cloverleafland mail.hongkong.com]

Hi..
Thanks for your reply....
actually I would like to use PMVFAST method...
but I don't know would there be help if using a combination of Y, Cr, Cb elements during the estimation in PMVFAST method.
Besides, I am confused that, isn't that the same between different methods?as the criteria for finding a motion vector is by the minimum SAD value?
regards,
Clover
> hi
> i didnt understand your first question properly..
> Could you clarify it a bit further??
> As for the Motion estimation, there are papers
> available of the type of method to be used ..
> A combination of three step search and four step
> search is useful in case the motion isnt too much
> between 2 time instants.
> This method is generally called Majority Voting
> algorithm where the encoder decides between
> the 2 methods by using the surrounding macroblock
> motion vectors.
> This method is more useful if u plan to build a
> real time
> encoder.
> Else there are other methods such as Full Search..
> which take a lot of processing time.
> regards
> Mithun Nayak
> 
> 
> -----Original Message-----
> From: technotes-admin   lists.m4if.org
> [mailto:technotes-admin   lists.m4if.org]On Behalf
> Of
> cloverleafland   mail.hongkong.com
> Sent: Thursday, November 07, 2023 3:20 PM
> To: technotes   lists.m4if.org
> Cc: discuss   lists.m4if.org
> Subject: [M4IF Technotes] Re: motion estimation,
> please advise
> 
> 
> Dear all,
> 
> >From previous questions on motion estimation, it
> can be done on Y component in each macroblock or
> combining a fraction of Cr and Cb together with Y
> into a 16x16 blocks for estimation. I would like
> to ask is there any further information on which
> method is better based on quality, speed and other
> performance? any source or papers comparing the
> performance of these two methods that I would
> find?
> Thanks very much.
> 
> Regards,
> Clover
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