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Block mode decision based on motion vectors for H.264/AVC

Juahir, I.M. and Badruddin , Nasreen (2007) Block mode decision based on motion vectors for H.264/AVC. In: 2006 IEEE Region 10 Conference, TENCON 2006, 14 November 2006 through 17 November 2006, Hong Kong.

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Abstract

The H.264/AVC video compression standard incorporates new features to enhance video coding. It supports a variety of block sizes and shapes for motion estimation (ME), and gives more flexibility than previous standards. In this paper, we propose a method of determining the block mode to be used for a particular video sequence to give the optimum performance for the encoder. To reduce the number of computations involved, the block mode decision phase is done on the first few frames only and fixed for subsequent frames. The decision is based on motion vectors (MVs) found from previous frames. From our results, the block computation time can be reduced as much as 47.72% for a video sequence with low motion activity. On average, most of the test video sequences suffer degradation in PSNR value of less than 0.5dB. © 2006 IEEE.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Computation theory; Image coding; Image quality; Motion estimation; Block sizes; Low motion activity; Motion vectors; Particular video sequence; Image compression
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:296
Deposited By: Nasreen Badruddin
Deposited On:03 Mar 2010 01:20
Last Modified:19 Jan 2017 08:27

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