TY - GEN
T1 - Efficient Interpolation Filters for Chroma Motion Compensation in Video Coding
AU - Xie, Xi
AU - Zhang, Kai
AU - Zhang, Li
AU - Wang, Meng
AU - Li, Junru
AU - Wang, Shiqi
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Interpolation filters for motion compensation play an important role in video coding. Until recently, interpolation filters for luma motion compensation (MC) draw most of the attention while interpolation filters for chroma motion compen-sation are less noticeable. This paper comprehensively analyzes different types of interpolation filters and presents 6-tap DCT based chroma interpolation filters for chroma MC. The proposed interpolation filters are designed considering multiple factors, comprising the characteristics of the chroma component, the frequency response of interpolation filter and the expenses of computational complexity. The experimental results show the proposed method can achieve 0.05%, 1.23% and 1.25% BD-rate reductions on average for Y, Cb and Cr components, respectively, with only 2% decoding time increasing under Random Access configuration, compared with ECM-4.0, which is a reference software developed by JVET, targeting at future video coding technologies beyond VVC. Owing to the good trade-off between coding performance and complexity, the proposed method has been adopted in ECM.
AB - Interpolation filters for motion compensation play an important role in video coding. Until recently, interpolation filters for luma motion compensation (MC) draw most of the attention while interpolation filters for chroma motion compen-sation are less noticeable. This paper comprehensively analyzes different types of interpolation filters and presents 6-tap DCT based chroma interpolation filters for chroma MC. The proposed interpolation filters are designed considering multiple factors, comprising the characteristics of the chroma component, the frequency response of interpolation filter and the expenses of computational complexity. The experimental results show the proposed method can achieve 0.05%, 1.23% and 1.25% BD-rate reductions on average for Y, Cb and Cr components, respectively, with only 2% decoding time increasing under Random Access configuration, compared with ECM-4.0, which is a reference software developed by JVET, targeting at future video coding technologies beyond VVC. Owing to the good trade-off between coding performance and complexity, the proposed method has been adopted in ECM.
KW - ECM
KW - chroma interpolation filter
KW - frequency response
KW - motion compensation
KW - video coding
UR - https://www.scopus.com/pages/publications/85147250508
U2 - 10.1109/VCIP56404.2022.10008810
DO - 10.1109/VCIP56404.2022.10008810
M3 - 会议稿件
AN - SCOPUS:85147250508
T3 - 2022 IEEE International Conference on Visual Communications and Image Processing, VCIP 2022
BT - 2022 IEEE International Conference on Visual Communications and Image Processing, VCIP 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE International Conference on Visual Communications and Image Processing, VCIP 2022
Y2 - 13 December 2022 through 16 December 2022
ER -