[Mp4-tech] [video] performance comparison between open loop and closed loop motion estimation

[배태면]

Dear Gary,

 

I used the “open loop motion estimation” as motion estimation using
original picture as a reference frame.

And I used the “closed loop motion estimation” to represent the motion
estimation using reconstructed picture as reference frame.

I though that it is common concept. If it is not so, I’m sorry for the
misunderstanding. 

 

Sincerely,

 

Tae Meon Bae

 

  _____  

From: Gary Sullivan [mailto:garysull windows.microsoft.com] 
Sent: Friday, January 25, 2008 3:48 AM
To: 배태면; mp4-tech lists.mpegif.org
Subject: RE: [Mp4-tech] performance comparison between open loop and closed
loop motion estimation

 

Tae Meon Bae,

 

What do you mean by open loop motion estimation?

 

Best Regards,

 

Gary Sullivan

 


  _____  


From: mp4-tech-bounces lists.mpegif.org [mailto:mp4-tech-
bounces lists.mpegif.org] On Behalf Of ???
Sent: Thursday, January 24, 2008 3:16 AM
To: mp4-tech lists.mpegif.org
Subject: [Mp4-tech] performance comparison between open loop and closed
loop motion estimation

  <http://mail.icu.ac.kr:80/nara/servlet/webmail.WebMailReConfServ/614641> 

Dear experts,

 

I'm optimizing h.264 encoder, and I have a question about motion estimation.

Generally open loop motion estimation shows lower performance than closed
motion estimation. Is there any JVT document or paper related with this
issue? I guess that the performance gap may be small if the target bit rate
is high enough. Is this assumption right? 

 

Thanks in advance.

 

Sincerely,

Tae Meon Bae

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