Block Motion Estimation Using Directional Adaptive Search Window

Fadly Chew, Nor Farhana and Badruddin, Nasreen (2006) Block Motion Estimation Using Directional Adaptive Search Window. In: 2006 IEEE Region 10 Conference, 14 - 17 November 2006, Hong Kong.

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Motion estimation (ME) is the exploitation of similarities between adjacent frames in a video sequences, and is an essential part of the H.264 and other video compression standards. However, it introduces an increase of computation complexity resulting in longer execution time. In this paper, the search range for block-matching ME is made adaptive, based on the motion vectors present in preceding frames. The proposed algorithm determines the amount of motion in past frames and classifies the video sequence as having low, medium or high motion. This classification and the direction of the motion vectors, are used to dynamically adjust the search window size and general orientation. Simulation results show that execution time could be reduced by 42%-60% with a small degradation in PSNR value, to that of non-adaptive ME.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE: Departments > Electrical & Electronic Engineering
Depositing User: Nasreen Badruddin
Date Deposited: 05 Dec 2011 03:01
Last Modified: 05 Dec 2011 03:01

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