Efficient motion vector selection and mode decision schemes for transcoder between DVC and VC-1

Author

Lee, Jae-Yung ; Han, Jong-Ki ; Sim, Dong-Gyu

Author_Institution

Dept. of Inf. & Commun. Eng., Sejong Univ., Seoul, South Korea

Volume

58

Issue

3

fYear

2012

fDate

8/1/2012 12:00:00 AM

Firstpage

905

Lastpage

911

Abstract

Transcoding between Distributed Video Coding (DVC) and VC-1 is an interesting research topic, has various applications, and VC-1 is one of most popular and efficient video codecs. Among the various techniques related to transcoders, we focus on motion estimation and mode decision. In this paper, we propose a Best Matched Vector Selection (BMVS) and fast mode decision to increase the accuracy and speed of the motion vector estimation and mode decision in the transcoder. BMVS is used to predict motion vectors for multiple reference frames that are far from the current frame. The proposed mode decision scheme selects a mode for the current coding block based on the information transferred from the DVC decoder, without calculating the Rate-Distortion (RD) costs for all possible candidate modes. Simulation results show that the proposed schemes simplify the transcoder significantly without degrading the transcoded video sequences.

Keywords

image sequences; motion estimation; transcoding; video codecs; video coding; BMVS; DVC decoder; VC-1; best matched vector selection; coding block; distributed video coding; fast mode decision; mode decision scheme; motion vector estimation; motion vector prediction; motion vector selection scheme; rate-distortion costs; reference frames; transcoded video sequences; transcoder; video codecs; Decoding; Motion estimation; Silicon; Transcoding; Vectors; Video codecs; DVC; Transcoder; VC-1;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2012.6311335

Filename

6311335