TY - GEN
T1 - Statistical rate-distortion estimation for H.264/AVC coders
AU - Tu, Yu Kuang
AU - Yang, Jar Ferr
AU - Sun, Ming Ting
PY - 2006
Y1 - 2006
N2 - Based on statistical analyses of transform coefficients, we suggest estimations of bit-rate and distortion functions directly from spatial-domain statistics. Simulations show that the proposed rate and distortion estimators achieve similar results as the true Rate-Quantization (R-Q) and Distortion-Quantization (D-Q) curves. By exploiting the proposed statistical estimations, two major applications are suggested. One is the fast Rate-Distortion Optimized (RDO) mode decision and the other is the improved Rate Control (RC) in video encoding. Simulation results show that the rate-distortion estimators have sufficient accuracy such that we could achieve considerably better performance in both applications. We achieved 51.69% R-D cost computation time reduction in average for the rate-distortion optimized mode decision, and a 0.20 dB average Peak Signal-to-Noise Ratio (PSNR) improvement for rate-control in H.264/AVC, respectively.
AB - Based on statistical analyses of transform coefficients, we suggest estimations of bit-rate and distortion functions directly from spatial-domain statistics. Simulations show that the proposed rate and distortion estimators achieve similar results as the true Rate-Quantization (R-Q) and Distortion-Quantization (D-Q) curves. By exploiting the proposed statistical estimations, two major applications are suggested. One is the fast Rate-Distortion Optimized (RDO) mode decision and the other is the improved Rate Control (RC) in video encoding. Simulation results show that the rate-distortion estimators have sufficient accuracy such that we could achieve considerably better performance in both applications. We achieved 51.69% R-D cost computation time reduction in average for the rate-distortion optimized mode decision, and a 0.20 dB average Peak Signal-to-Noise Ratio (PSNR) improvement for rate-control in H.264/AVC, respectively.
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M3 - Conference contribution
AN - SCOPUS:34547328103
SN - 0780393902
SN - 9780780393905
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 365
EP - 368
BT - ISCAS 2006
T2 - ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems
Y2 - 21 May 2006 through 24 May 2006
ER -