Title :
An Efficient Matrix-Based DCT Splitter/Merger for MPEG-2-to-AVC/H.264 Transform Kernel Conversion
Author :
Chuang, Yuh-Jue ; WU, JA-LING
Author_Institution :
Dept. of Comput. Sci., Nat. Taiwan Univ., Taipei
Abstract :
An efficient matrix-based discrete cosine transform splitter/merger for realizing MPEG-2 to AVC/H.264 transform kernel conversion is presented in this paper. Due to its matrix-based nature, the proposed transform kernel converter can be readily implemented by specific multimedia instruction set available today. Both the computational complexity and numerical error behavior of the proposed approach are shown to be superior to that of the straightforward (full decoding + reencoding) one. In other words, the effectiveness of the proposed algorithm can be justified by examining both the execution speed and the reproduced image quality
Keywords :
computational complexity; decoding; discrete cosine transforms; matrix algebra; video coding; AVC/H.264; MPEG-2; computational complexity; decoding; discrete cosine transform; image quality; matrix-based DCT merger; matrix-based DCT splitter; multimedia instruction set; transform kernel conversion; Automatic voltage control; Corporate acquisitions; Discrete cosine transforms; Discrete transforms; Image storage; Kernel; Matrix converters; Multimedia communication; Transform coding; Videos; DCT splitter/merger; Discrete cosine transform (DCT); MPEG-2-to-AVC/H.264 transform Kernel conversion;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
DOI :
10.1109/TCSVT.2006.887077
