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Article Details

Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

A Frequency Based Hierarchical Fast Search Block Matching Algorithm for Fast Video Communication

Author 1: Nijad Al-Najdawi
Author 2: Sara Tedmori
Author 3: Omar A. Alzubi
Author 4: Osama Dorgham
Author 5: Jafar A. Alzubi

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Digital Object Identifier (DOI) : 10.14569/IJACSA.2016.070459

Article Published in International Journal of Advanced Computer Science and Applications(IJACSA), Volume 7 Issue 4, 2016.

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Abstract: Numerous fast-search block motion estimation algorithms have been developed to circumvent the high computational cost required by the full-search algorithm. These techniques however often converge to a local minimum, which makes them subject to noise and matching errors. Hence, many spatial domain block matching algorithms have been developed in literature. These algorithms exploit the high correlation that exists between pixels inside each frame block. However, with the block transformed frequencies, block matching can be used to test the similarities between a subset of selected frequencies that correctly identify each block uniquely; therefore fewer comparisons are performed resulting in a considerable reduction in complexity. In this work, a two-level hierarchical fast search motion estimation algorithm is proposed in the frequency domain. This algorithm incorporates a novel search pattern at the top level of the hierarchy. The proposed hierarchical method for motion estimation not only produces consistent motion vectors within each large object, but also accurately estimates the motion of small objects with a substantial reduction in complexity when compared to other benchmark algorithms.

Keywords: Video coding; Frequency domain; Motion estimation; Hierarchical search; Block matching; Communication.

Nijad Al-Najdawi, Sara Tedmori, Omar A. Alzubi, Osama Dorgham and Jafar A. Alzubi, “A Frequency Based Hierarchical Fast Search Block Matching Algorithm for Fast Video Communication” International Journal of Advanced Computer Science and Applications(IJACSA), 7(4), 2016. http://dx.doi.org/10.14569/IJACSA.2016.070459

@article{Al-Najdawi2016,
title = {A Frequency Based Hierarchical Fast Search Block Matching Algorithm for Fast Video Communication},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2016.070459},
url = {http://dx.doi.org/10.14569/IJACSA.2016.070459},
year = {2016},
publisher = {The Science and Information Organization},
volume = {7},
number = {4},
author = {Nijad Al-Najdawi and Sara Tedmori and Omar A. Alzubi and Osama Dorgham and Jafar A. Alzubi}
}


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