TY - GEN
T1 - Reversed intra prediction based on chroma extraction in HEVC
AU - Chen, Wei Jing
AU - Su, Jia
AU - Li, Bin
AU - Ikenaga, Takeshi
PY - 2011/12/1
Y1 - 2011/12/1
N2 - In the HEVC standard, UIP (unified intra prediction) is included as one of the new coding tools in the latest HM software, which supports 33 different directions in addition to the DC prediction mode. It represents directional structures more accurately, and performs remarkable bit rate saving. However, UIP also significantly increases the burdens on computational complexity. This contribution proposes a reversed intra prediction which utilizes the inherent correlation between luma and chroma. By reversing the prediction orders, the chroma prediction is executed first in order to create the depth map and mode candidate subset that will reduce the computational complexity in luma intra prediction. Experiment results show that the proposed algorithm can achieve approximately 30% time savings in average with 0.03, 0.05 BD-PSNR losses in chroma components and unnoticeable increments in bit rate.
AB - In the HEVC standard, UIP (unified intra prediction) is included as one of the new coding tools in the latest HM software, which supports 33 different directions in addition to the DC prediction mode. It represents directional structures more accurately, and performs remarkable bit rate saving. However, UIP also significantly increases the burdens on computational complexity. This contribution proposes a reversed intra prediction which utilizes the inherent correlation between luma and chroma. By reversing the prediction orders, the chroma prediction is executed first in order to create the depth map and mode candidate subset that will reduce the computational complexity in luma intra prediction. Experiment results show that the proposed algorithm can achieve approximately 30% time savings in average with 0.03, 0.05 BD-PSNR losses in chroma components and unnoticeable increments in bit rate.
KW - HEVC
KW - chroma extraction
KW - reversed intra prediction
UR - http://www.scopus.com/inward/record.url?scp=84863125851&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863125851&partnerID=8YFLogxK
U2 - 10.1109/ISPACS.2011.6146083
DO - 10.1109/ISPACS.2011.6146083
M3 - Conference contribution
AN - SCOPUS:84863125851
SN - 9781457721663
T3 - 2011 International Symposium on Intelligent Signal Processing and Communications Systems: "The Decade of Intelligent and Green Signal Processing and Communications", ISPACS 2011
BT - 2011 International Symposium on Intelligent Signal Processing and Communications Systems
T2 - 19th IEEE International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2011
Y2 - 7 December 2011 through 9 December 2011
ER -