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Implementing Entropy Codec for H.264 Video Compression Standard
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 129 - Number 2 |
| Year of Publication: 2015 |
| Authors: Mohamed Abd Ellatief Elsayed, Abdelhalim Zekry |
10.5120/ijca2015906869
|
Mohamed Abd Ellatief Elsayed, Abdelhalim Zekry . Implementing Entropy Codec for H.264 Video Compression Standard. International Journal of Computer Applications. 129, 2 ( November 2015), 45-53. DOI=10.5120/ijca2015906869
Abstract
Entropy coding is a lossless compression technique which is supported in H.264/AVC standard by different techniques. According to baseline and the extended profiles of H.264/AVC, two variable length techniques are for seen. The first one is context adaptive variable length coding (CAVLC) and the other is exponential Golomb (Exp-Golomb) one. The CAVLC is used to quantize transform residues after reordering them by ZigZag scanning while Exp-Golomb coding is used to quantize other syntax elements. Within the frame of realizing the whole H246 standards, this paper, introduces an implementation of these two codec techniques for baseline profile using Matlab and Simulink. The main concept is to implement CAVLC and Exp-Golomb decoder according to H.264/AVC standard and then device a technique to implement CAVLC & Exp-Golomb encoder. The different implementations are utilized to verify each other.
References
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