Title :
Efficient Fast Algorithm of DCT for H.264/AVC
Author :
Xiang Xiaoxuan ; Wang Yan ; Xiang Yangxia ; Chen Dazhi ; Shi Zhengang
Author_Institution :
Sch. of Inf. Sci. & Eng., Shenyang Ligong Univ., Shenyang, China
Abstract :
This paper presents an efficient fast algorithm to reduce redundant discrete cosine transform (DCT) and quantization computations for H.264/AVC encoding optimization. A mathematic model is established based on analyzing residual coefficients distribution and considering the properties of DCT coefficients´ energy distribution. The experimental results demonstrate that the proposed approach can achieve the best performance in reducing the DCT and quantization (Q) computations and obtain almost the same video quality as the original encoder in H.264/AVC.
Keywords :
discrete cosine transforms; quantisation (signal); video coding; DCT coefficient energy distribution; H.264/AVC encoding optimization; mathematic model; quantization computation; redundant discrete cosine transform; residual coefficient distribution; video quality; DCT; H.264/AVC encoding; fast algorithm; quantization;
Conference_Titel :
Intelligent Networks and Intelligent Systems (ICINIS), 2010 3rd International Conference on
Conference_Location :
Shenyang
Print_ISBN :
978-1-4244-8548-2
Electronic_ISBN :
978-0-7695-4249-2
DOI :
10.1109/ICINIS.2010.28
