ICIP 2006, Atlanta, GA
 

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Paper:TA-P2.4
Session:H.264 Video Coding - II
Time:Tuesday, October 10, 09:40 - 12:20
Presentation: Poster
Topic: Image & Video Coding: Video compression standards
Title: ADAPTIVE BLOCK-SIZE TRANSFORM BASED ON EXTENDED INTEGER 8X8/4X4 TRANSFORMS FOR H.264/AVC
Authors: Honggang Qi; Chinese Academy of Sciences 
 Wen Gao; Chinese Academy of Sciences 
 Siwei Ma; University of Southern California 
 Debin Zhao; Chinese Academy of Sciences 
Abstract: In this paper, a low-complexity Adaptive Block-size Transform (ABT) scheme is proposed for the H.264/AVC. The integer 8x8/4x4 discrete cosine transforms with an extended relation are applied to the proposed ABT scheme for reducing the implementation complexities. In the proposed scheme, the 8x8/4x4 transforms can be merged together and share the same scale matrix. As a result, the hardware units and storage resources can be effectively saved in both encoder and decoder. The 8x8 transform derived from the 4x4 transform of H.264/AVC can be easily implemented with several addition and shift operators. And, its intermediate results can be strictly limited within 16-bit. The experimental results show that the proposed ABT scheme based on extended transforms achieve a similar coding performance to the original ABT scheme for H.264/AVC.