ICIP 2006, Atlanta, GA
 

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Paper Detail

Paper:TA-P2.1
Session:H.264 Video Coding - II
Time:Tuesday, October 10, 09:40 - 12:20
Presentation: Poster
Topic: Image & Video Coding: DCT-based video coding
Title: EFFECTIVELY DETECTING ALL-ZERO DCT BLOCKS FOR H.264 OPTIMIZATION
Authors: Hanli Wang; City University of Hong Kong 
 Sam Kwong; City University of Hong Kong 
 Chi-Wah Kok; Hong Kong Applied Science & Technology Research Institution Co. Ltd. 
Abstract: This paper presents a novel efficient algorithm to reduce redundant DCT and quantization computations for H.264 encoding. A theoretical analysis is performed to study the sufficient condition for DCT coefficients to be quantized to zeros in H.264. As a result, a more tight sufficient condition is derived to early detect all-zero 4x4 DCT blocks. Compared with other algorithms, the proposed algorithm provides a more precise and efficient condition to predict all-zero DCT blocks. The experimental results demonstrate that the proposed algorithm outperforms other algorithms in terms of all the evaluated performances.