Modified Adaptive Predict Hexagum Based Search Motion Estimation Algorithm

I. Ali; M. Muzammil; A. Basit; I. Haq

No Detail Found!

Modified Adaptive Predict Hexagum Based Search Motion Estimation Algorithm

Author(s)

I. Ali National Centre for Physics,Islamabad,Pakistan

M. Muzammil International Islamic University,Islamabad,Pakistan

A. Basit Pakistan Institute of Nuclear Science and Technology,Islamabad,Pakistan

I. Haq International Islamic University,Islamabad,Pakistan

Abstract

Motion Estimation (ME) is a very critical part of any video encoder and different fast ME algorithms are proposed to reduce the overhead of computational cost that was available in encoding system. This paper proposes a Modified Adaptive Predict Hexagon Based Search (MAPHS) algorithm to cope the computational requirements. The proposed algorithm predicts the direction of motion by using adaptive rood shaped predictor and then Hexagonal based Search is applied to refine the search process. The adaptive predictor changes own size predetermined motion vector for each macro block. The ME process is speedup by incorporating thresholding technique, which is primarily beneficial for the videos having low motion activities. Moreover, the proposed algorithm has improved the peak signal to noise ratio (PSNR) by adaptively changing the threshold value according to the motion contents of different videos. The experimental results show that the proposed algorithm performs well on both high definition and common intermediate format videos with respect to ME time and number of search points with acceptable PSNR.

Publication Details

Page(s) 164-170

DOI DOI not available

Published Journal: Nucleus, Volume: 55, Issue: 4, Year: 2018

Request the full text from PASTIC

Keywords

Hexagon based search, HD video, Motion vector, Motion estimation, Block matching