TY - GEN
T1 - A fast inter residual quad-tree construction method in HEVC
AU - Tai, Shen Chuan
AU - Chang, Chia Ying
AU - Chen, Bo Jhih
AU - Yang, Zhi Yu
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/9/18
Y1 - 2014/9/18
N2 - High Efficiency Video Coding(HEVC) is an ongoing video coding standard. Compared to H.264, it adopts quad-tree structure to decide the encoding efficiency by computing the rate-distortion(R-D) cost function recursively. The transform unit (TU) is the basic unit used for the transform and quantization processes in HEVC and the ranges size from 4×4 to 32×32. In addition, a large size TU is always chosen, e.g., 32×32, of the RQT if a residual block has a little prediction error, especially the homogeneous-area CUs are encoded. Based on the observations, the proposed method uses two stages to skip unnecessary computations on the residual quad-tree (RQT). First, to decide whether DCT/Q processes can be omitted or not. And then is used to early terminate the TU split process. Experiment results show that the proposed method is capable of reducing a large amount of time of inter prediction RQT decision on average 50% and retaining the coding performance by comparing the original HEVC encoder.
AB - High Efficiency Video Coding(HEVC) is an ongoing video coding standard. Compared to H.264, it adopts quad-tree structure to decide the encoding efficiency by computing the rate-distortion(R-D) cost function recursively. The transform unit (TU) is the basic unit used for the transform and quantization processes in HEVC and the ranges size from 4×4 to 32×32. In addition, a large size TU is always chosen, e.g., 32×32, of the RQT if a residual block has a little prediction error, especially the homogeneous-area CUs are encoded. Based on the observations, the proposed method uses two stages to skip unnecessary computations on the residual quad-tree (RQT). First, to decide whether DCT/Q processes can be omitted or not. And then is used to early terminate the TU split process. Experiment results show that the proposed method is capable of reducing a large amount of time of inter prediction RQT decision on average 50% and retaining the coding performance by comparing the original HEVC encoder.
UR - http://www.scopus.com/inward/record.url?scp=84907735672&partnerID=8YFLogxK
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U2 - 10.1109/ICCE-TW.2014.6904010
DO - 10.1109/ICCE-TW.2014.6904010
M3 - Conference contribution
AN - SCOPUS:84907735672
T3 - Digest of Technical Papers - IEEE International Conference on Consumer Electronics
SP - 111
EP - 112
BT - Digest of Technical Papers - IEEE International Conference on Consumer Electronics
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1st IEEE International Conference on Consumer Electronics - Taiwan, ICCE-TW 2014
Y2 - 26 May 2014 through 28 May 2014
ER -