This paper reports on verification testing of the coding performance of the screen content coding (SCC) extensions of the High Efficiency Video Coding (HEVC) standard (Rec. ITU-T H.265 | ISO/IEC 23008-2 MPEG-H Part 2). The coding performance of HEVC screen content model (SCM) reference software is compared with that of the HEVC test model (HM) without the SCC extensions, as well as with the Advanced Video Coding (AVC) joint model (JM) reference software, for both lossy and mathematically lossless compression using All-Intra (AI), Random Access (RA), and Lowdelay B (LB) encoding structures and using similar encoding techniques. Video test sequences in 1920×1080 RGB 4:4:4, YCbCr 4:4:4, and YCbCr 4:2:0 colour sampling formats with 8 bits per sample are tested in two categories: “text and graphics with motion” (TGM) and “mixed” content. For lossless coding, the encodings are evaluated in terms of relative bit-rate savings. For lossy compression, subjective testing was conducted at 4 quality levels for each coding case, and the test results are presented through mean opinion score (MOS) curves. The relative coding performance is also evaluated in terms of Bjøntegaard-delta (BD) bit-rate savings for equal PSNR quality. The perceptual tests and objective metric measurements show a very substantial benefit in coding efficiency for the SCC extensions, and provided consistent results with a high degree of confidence. For TGM video, the estimated bit-rate savings ranged from 60–90% relative to the JM and 40–80% relative to the HM, depending on the AI/RA/LB configuration category and colour sampling format.
[1]
Gary J. Sullivan,et al.
Overview of the High Efficiency Video Coding (HEVC) Standard
,
2012,
IEEE Transactions on Circuits and Systems for Video Technology.
[2]
Gary J. Sullivan,et al.
Video Quality Evaluation Methodology and Verification Testing of HEVC Compression Performance
,
2016,
IEEE Transactions on Circuits and Systems for Video Technology.
[3]
Gary J. Sullivan,et al.
Comparison of the Coding Efficiency of Video Coding Standards—Including High Efficiency Video Coding (HEVC)
,
2012,
IEEE Transactions on Circuits and Systems for Video Technology.
[4]
Gary J. Sullivan,et al.
High Efficiency Video Coding (HEVC), Algorithms and Architectures
,
2014,
Integrated Circuits and Systems.
[5]
Gary J. Sullivan,et al.
Lifting-based reversible color transformations for image compression
,
2008,
Optical Engineering + Applications.
[6]
Jizheng Xu,et al.
Overview of the Emerging HEVC Screen Content Coding Extension
,
2016,
IEEE Transactions on Circuits and Systems for Video Technology.
[7]
Cisco Visual Networking Index: Forecast and Methodology 2016-2021.(2017) http://www.cisco.com/c/en/us/solutions/collateral/service-provider/visual- networking-index-vni/complete-white-paper-c11-481360.html. High Efficiency Video Coding (HEVC) Algorithms and Architectures https://jvet.hhi.fraunhofer.
,
2017
.
[8]
Bin Li,et al.
Compression performance of HEVC and its format range and screen content coding extensions
,
2015,
SPIE Optical Engineering + Applications.