Title :
Improvement of normality and orthogonality in HEVC transform bases
Author :
Sugito, Yasuko ; Ichigaya, Atsuro ; Sakaida, Shinichi
Author_Institution :
NHK Sci. & Technol. Res. Labs., Tokyo, Japan
Abstract :
The present paper provides transform bases with improved normality and orthogonality properties based on the integer DCT of high-efficiency video coding (HEVC). The proposed transform bases improve the normality and orthogonality properties compared to the HEVC transform bases. Coding and re-encoding experiments were conducted using HEVC test model (HM) version 6.0 and the proposed method. The experiments were conducted under various bitrate ranges. Under the high-bit-rate condition, the proposed method exhibited coding gains compared to HM 6.0 without increasing the encoding/decoding time.
Keywords :
transforms; video coding; HEVC test model version 6.0; HEVC transform bases; HM version 6.0; high-bit-rate condition; high-efficiency video coding; orthogonality properties; Discrete cosine transforms; Encoding; Laplace equations; Quantization; Vectors; Video coding; DCT; HEVC; Transform basis; Video coding;
Conference_Titel :
Visual Communications and Image Processing (VCIP), 2012 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4673-4405-0
Electronic_ISBN :
978-1-4673-4406-7
DOI :
10.1109/VCIP.2012.6410730
