TY - GEN

T1 - Early detection algorithms for 8x8 all-zero blocks in H.264/AVC

AU - Liu, Qin

AU - Huang, Yiqing

AU - Ikenaga, Takeshi

PY - 2008

Y1 - 2008

N2 - 8x8 transform has been introduced in H.264's high profile to improve the video quality. After transform and quantization, if all the coefficients of the block's residue data become zero, this block is called all-zero block (AZB). Many 4x4 transform AZB early detection algorithms have been proposed to skip transform and quantization process. In this paper, after theoretical analysis performed for the sufficient condition of 8x8 AZB detection, sum of absolute differences(SAD) and sum of absolute transformed(SATD) based 8 x 8 AZB detection algorithms are proposed. Experimental results show that the proposed algorithms achieve major improvement of computation reduction from 0.95% to 79.48% for 720p sequences. The computation reduction increases as QP increases.

AB - 8x8 transform has been introduced in H.264's high profile to improve the video quality. After transform and quantization, if all the coefficients of the block's residue data become zero, this block is called all-zero block (AZB). Many 4x4 transform AZB early detection algorithms have been proposed to skip transform and quantization process. In this paper, after theoretical analysis performed for the sufficient condition of 8x8 AZB detection, sum of absolute differences(SAD) and sum of absolute transformed(SATD) based 8 x 8 AZB detection algorithms are proposed. Experimental results show that the proposed algorithms achieve major improvement of computation reduction from 0.95% to 79.48% for 720p sequences. The computation reduction increases as QP increases.

UR - http://www.scopus.com/inward/record.url?scp=58049094287&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58049094287&partnerID=8YFLogxK

U2 - 10.1109/MMSP.2008.4665103

DO - 10.1109/MMSP.2008.4665103

M3 - Conference contribution

AN - SCOPUS:58049094287

SN - 9781424422951

T3 - Proceedings of the 2008 IEEE 10th Workshop on Multimedia Signal Processing, MMSP 2008

SP - 355

EP - 358

BT - Proceedings of the 2008 IEEE 10th Workshop on Multimedia Signal Processing, MMSP 2008

T2 - 2008 IEEE 10th Workshop on Multimedia Signal Processing, MMSP 2008

Y2 - 8 October 2008 through 10 October 2008

ER -