Fast H.264 video decoding by bit order reversing and its application to real-time H.264 video encryption

被引：0
|
作者：
Yi K. [1 ]
Lee Y.-H. [1 ]
Joo J.-H. [2 ]
机构：
[1] School of Computer Science and Electrical Engineering, Handong Global University, Pohang
[2] Department of Computer Engineering, Seoul National University, Seoul
来源：
International Journal of Multimedia and Ubiquitous Engineering | 2016年 / 11卷 / 03期
关键词：
Accelerating H.264 decoder; Fast video stream parsing; H.264 video decoding; Lookup table based decoding; Variable length coding;
D O I：
10.14257/ijmue.2016.11.3.05
中图分类号：
学科分类号：
摘要：
The demand on fast H.264 video processing technology is highly increasing since the electronics devices with encoding, transmission, and decoding high-resolution video are becoming popular in the consumer market. In this paper, we present a fast H.264 video decoding method by modifying the algorithm dealing with parsing bit-stream of variable-length code (VLC). The key idea of our approach is to reverse the bit order in a fast way through LUT (Look-Up-Table) in order to reduce the bit pattern extraction time for VLC stream. We demonstrated the speedup by employing the proposed idea for H.264 real-time video encryption application. The experimental results show about 11% execution time reduction in the part of video stream parsing function and 3.1% time reduction in the whole video encryption system. © 2016 SERSC.
引用
收藏
页码：45 / 56
页数：11
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