ZTE

ZTE Communications ›› 2016, Vol. 14 ›› Issue (1): 32-38.DOI: 10.3969/j.issn.1673-5188.2016.01.005

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ITP Colour Space and Its Compression Performance for High Dynamic Range and Wide Colour Gamut Video Distribution

Taoran Lu, Fangjun Pu, Peng Yin, Tao Chen, Walt Husak, Jaclyn Pytlarz, Robin Atkins, Jan Fr-hlich, Guan-Ming Su   

  1. Dolby Laboratories Inc., Sunnyvale, CA 94085, USA
  • Received:2015-11-28 Online:2016-02-01 Published:2019-11-27
  • About author:Taoran Lu (tlu@dolby.com) is currently a Staff Researcher with Dolby Laboratories, Inc. She got her PhD in electrical and computer engineering from the University of Florida in December 2010 and joined Dolby in January 2011. Her research interest is on image/video processing and compression, especially on high dynamic range video distribution. She has been an active participant in the MPEG/ITU-T video compression standardization expert group. She has authored and co-authored many academic journal and conference papers, standard contributions and US patents. Fangjun Pu (Fangjun.Pu@dolby.com) is currently a Research Engineer at Image Technology Department in Dolby Laboratories, Inc. She got her Master degree in Electrical Engineering Department from University of Southern California in May 2014. Her research interest is about image/video processing and compression. She is an active participant in MPEG video compression HDR/WCG related standardizations. She has authored or co-authored several standard contributions and conference papers. Peng Yin (pyin@dolby.com) is Senior Staff Researcher at Image Technology Department at Dolby Laboratories, Inc. from 2010. Before joining Dolby Laboratories, she worked at Corporate Research, Thomson Inc./Technicolor. She received her PhD degree from Princeton University in 2002. Her research interest is video processing and compression. She is very active in MPEG/VCEG video coding related standardizations and has many publications and patents. She received the IEEE Circuits and Systems Society Best Paper Award in 2003. Tao Chen (tchen@dolby.com) holds a PhD degree in computer science. Since 2011, he has been with Dolby Labs as Director of Applied Research. Prior to that, he was with Panasonic Hollywood Lab in Universal City, CA and Sarnoff Corporation in Princeton, NJ. His research interests include image and video compression, 3D video processing and system, and HDR video technology. Dr. Chen has served as session chairs and has been on technical committees for a number of international conferences. He was appointed vice chair of a technical group for video codec evaluation in the Blu-ray Disc Association in 2009. Dr. Chen was a recipient of an Emmy Engineering Award in 2008. He received Silver Awards from the Panasonic Technology Symposium in 2004 and 2009. In 2002, he received the Most Outstanding Ph.D. Thesis Award from the Computer Science Association of Australia and a Mollie Holman Doctoral Medal from Monash University. Walt Husak (WJH@dolby.com) is the Director of Image Technologies at Dolby Labs, Inc. He began his television career at the Advanced Television Test Center (ATTC) in 1990 carrying out video objective measurements and RF multipath testing of HDTV systems proposed for the ATSC standard. Joining Dolby in 2000, Walt has spent his early years studying and reporting on advanced compression systems for Digital Cinema, Digital Television, and Blu-ray. He has managed or executed visual quality tests for DCI, ATSC, Dolby, and MPEG. He is now a member of the CTO's office focusing his efforts on High Dynamic Range for Digital Cinema and Digital Television. Walt has authored numerous articles and papers for a number of major industry publications. Walt is an active member of SMPTE, MPEG, JPEG, ITU-T, and SPIE. Jaclyn Pytlarz (Jaclyn.Pytlarz@dolby.com) holds a BS degree in Motion Picture Science from Rochester Institute of Technology. She has worked at Dolby Laboratories since 2014 as an Engineer in the Applied Vision Science Group inside Dolby’s Advanced Technology Group. Prior to work at Dolby, she worked at the Academy of Motion Picture Arts and Sciences as an Imaging Science Intern and iCONN Video Production in 2013 and 2012 accordingly. Her main areas of research include vision and color science as it relates to developing technology for high dynamic range and wide color gamut displays as well signal processing for future compatibility. Robin Atkins (Robin.Atkins@dolby.com) has degrees in Electrical Engineering and Engineering Physics. His career in color and imaging science began while designing High Dynamic Range displays at Brightside Technologies. These displays revealed a fascinating host of new challenges in color appearance, which he is now working to address as part of the Applied Vision Science Group at Dolby Labs. His main focus is on building color management systems for mapping High Dynamic Range and Wide Color Gamut content to a wide range of consumer display devices, and solving the question of how to best represent large color volumes for content distribution. Jan Fr?hlich (jfroe@dolby.com) is PhD-Student at the University of Stuttgart. He is currently working on high dynamic range and wide color gamut imaging and gamut mapping. Froehlich contributed to multiple research projects on new acquisition, production and archiving systems for television and cinema and has been involved in a number of technically groundbreaking film projects, such as Europe’s first animated stereoscopic feature film and the HdM-HDR-2014 high dynamic range & wide gamut video dataset. Before starting the PhD he was Technical Director at CinePostproduction GmbH in Germany. He is member of SMPTE, IS&T, SPIE, FKTG, and the German Society of Cinematographers (BVK). Guan-Ming Su (guanming.su@dolby.com) is with Dolby Labs, Sunnyvale, CA. Prior to this he has been with the R&D Department, Qualcomm, Inc., San Diego, CA; ESS Technology, Fremont, CA; and Marvell Semiconductor, Inc., Santa Clara, CA. He is the inventor of 50+ U.S. patents and pending applications. He is the co-author of 3D Visual Communications (John Wiley & Sons, 2013). He served as an associate editor of Journal of Communications; and Director of review board and R-Letter in IEEE Multimedia Communications Technical Committee. He also serves as the Technical Program Track Co-Chair in ICCCN 2011, Theme Chair in ICME 2013, TPC Co-Chair in ICNC 2013, TPC Chair in ICNC 2014, Demo Chair in SMC 2014, General Chair in ICNC 2015, and Area Co-Chair for Multimedia Applications in ISM 2015. He is the Executive Director of Industrial Governance Board in Asia Pacific Signal and Information Processing Association (APSIPA) since 2014. He is a senior member of IEEE. He obtained his Ph.D. degree from University of Maryland, College Park.

ITP Colour Space and Its Compression Performance for High Dynamic Range and Wide Colour Gamut Video Distribution

Taoran Lu, Fangjun Pu, Peng Yin, Tao Chen, Walt Husak, Jaclyn Pytlarz, Robin Atkins, Jan Fr-hlich, Guan-Ming Su   

  1. Dolby Laboratories Inc., Sunnyvale, CA 94085, USA
  • 作者简介:Taoran Lu (tlu@dolby.com) is currently a Staff Researcher with Dolby Laboratories, Inc. She got her PhD in electrical and computer engineering from the University of Florida in December 2010 and joined Dolby in January 2011. Her research interest is on image/video processing and compression, especially on high dynamic range video distribution. She has been an active participant in the MPEG/ITU-T video compression standardization expert group. She has authored and co-authored many academic journal and conference papers, standard contributions and US patents. Fangjun Pu (Fangjun.Pu@dolby.com) is currently a Research Engineer at Image Technology Department in Dolby Laboratories, Inc. She got her Master degree in Electrical Engineering Department from University of Southern California in May 2014. Her research interest is about image/video processing and compression. She is an active participant in MPEG video compression HDR/WCG related standardizations. She has authored or co-authored several standard contributions and conference papers. Peng Yin (pyin@dolby.com) is Senior Staff Researcher at Image Technology Department at Dolby Laboratories, Inc. from 2010. Before joining Dolby Laboratories, she worked at Corporate Research, Thomson Inc./Technicolor. She received her PhD degree from Princeton University in 2002. Her research interest is video processing and compression. She is very active in MPEG/VCEG video coding related standardizations and has many publications and patents. She received the IEEE Circuits and Systems Society Best Paper Award in 2003. Tao Chen (tchen@dolby.com) holds a PhD degree in computer science. Since 2011, he has been with Dolby Labs as Director of Applied Research. Prior to that, he was with Panasonic Hollywood Lab in Universal City, CA and Sarnoff Corporation in Princeton, NJ. His research interests include image and video compression, 3D video processing and system, and HDR video technology. Dr. Chen has served as session chairs and has been on technical committees for a number of international conferences. He was appointed vice chair of a technical group for video codec evaluation in the Blu-ray Disc Association in 2009. Dr. Chen was a recipient of an Emmy Engineering Award in 2008. He received Silver Awards from the Panasonic Technology Symposium in 2004 and 2009. In 2002, he received the Most Outstanding Ph.D. Thesis Award from the Computer Science Association of Australia and a Mollie Holman Doctoral Medal from Monash University. Walt Husak (WJH@dolby.com) is the Director of Image Technologies at Dolby Labs, Inc. He began his television career at the Advanced Television Test Center (ATTC) in 1990 carrying out video objective measurements and RF multipath testing of HDTV systems proposed for the ATSC standard. Joining Dolby in 2000, Walt has spent his early years studying and reporting on advanced compression systems for Digital Cinema, Digital Television, and Blu-ray. He has managed or executed visual quality tests for DCI, ATSC, Dolby, and MPEG. He is now a member of the CTO's office focusing his efforts on High Dynamic Range for Digital Cinema and Digital Television. Walt has authored numerous articles and papers for a number of major industry publications. Walt is an active member of SMPTE, MPEG, JPEG, ITU-T, and SPIE. Jaclyn Pytlarz (Jaclyn.Pytlarz@dolby.com) holds a BS degree in Motion Picture Science from Rochester Institute of Technology. She has worked at Dolby Laboratories since 2014 as an Engineer in the Applied Vision Science Group inside Dolby’s Advanced Technology Group. Prior to work at Dolby, she worked at the Academy of Motion Picture Arts and Sciences as an Imaging Science Intern and iCONN Video Production in 2013 and 2012 accordingly. Her main areas of research include vision and color science as it relates to developing technology for high dynamic range and wide color gamut displays as well signal processing for future compatibility. Robin Atkins (Robin.Atkins@dolby.com) has degrees in Electrical Engineering and Engineering Physics. His career in color and imaging science began while designing High Dynamic Range displays at Brightside Technologies. These displays revealed a fascinating host of new challenges in color appearance, which he is now working to address as part of the Applied Vision Science Group at Dolby Labs. His main focus is on building color management systems for mapping High Dynamic Range and Wide Color Gamut content to a wide range of consumer display devices, and solving the question of how to best represent large color volumes for content distribution. Jan Fr?hlich (jfroe@dolby.com) is PhD-Student at the University of Stuttgart. He is currently working on high dynamic range and wide color gamut imaging and gamut mapping. Froehlich contributed to multiple research projects on new acquisition, production and archiving systems for television and cinema and has been involved in a number of technically groundbreaking film projects, such as Europe’s first animated stereoscopic feature film and the HdM-HDR-2014 high dynamic range & wide gamut video dataset. Before starting the PhD he was Technical Director at CinePostproduction GmbH in Germany. He is member of SMPTE, IS&T, SPIE, FKTG, and the German Society of Cinematographers (BVK). Guan-Ming Su (guanming.su@dolby.com) is with Dolby Labs, Sunnyvale, CA. Prior to this he has been with the R&D Department, Qualcomm, Inc., San Diego, CA; ESS Technology, Fremont, CA; and Marvell Semiconductor, Inc., Santa Clara, CA. He is the inventor of 50+ U.S. patents and pending applications. He is the co-author of 3D Visual Communications (John Wiley & Sons, 2013). He served as an associate editor of Journal of Communications; and Director of review board and R-Letter in IEEE Multimedia Communications Technical Committee. He also serves as the Technical Program Track Co-Chair in ICCCN 2011, Theme Chair in ICME 2013, TPC Co-Chair in ICNC 2013, TPC Chair in ICNC 2014, Demo Chair in SMC 2014, General Chair in ICNC 2015, and Area Co-Chair for Multimedia Applications in ISM 2015. He is the Executive Director of Industrial Governance Board in Asia Pacific Signal and Information Processing Association (APSIPA) since 2014. He is a senior member of IEEE. He obtained his Ph.D. degree from University of Maryland, College Park.

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Abstract: High Dynamic Range (HDR) and Wider Colour Gamut (WCG) content represents a greater range of luminance levels and a more complete reproduction of colours found in real-world scenes. The current video distribution environments deliver Standard Dynamic Range (SDR) signal Y′CbCr. For HDR and WCG content, it is desirable to examine if such signal format still works well for compression, and to know if the overall system performance can be further improved by exploring different signal formats. In this paper, ITP (ICTCP) colour space is presented. The paper concentrates on examining the two aspects of ITP colour space: 1) ITP characteristics in terms of signal quantization at a given bit depth; 2) ITP compression performance. The analysis and simulation results show that ITP 10 bit has better properties than Y′CbCr-PQ 10bit in colour quantization, constant luminance, hue property and chroma subsampling, and it also has good compression efficiency. Therefore it is desirable to adopt ITP colour space as a new signal format for HDR/WCG video compression.

Key words: HDR, WCG, Y′CbCr, ITP, ICTCP

摘要： High Dynamic Range (HDR) and Wider Colour Gamut (WCG) content represents a greater range of luminance levels and a more complete reproduction of colours found in real-world scenes. The current video distribution environments deliver Standard Dynamic Range (SDR) signal Y′CbCr. For HDR and WCG content, it is desirable to examine if such signal format still works well for compression, and to know if the overall system performance can be further improved by exploring different signal formats. In this paper, ITP (ICTCP) colour space is presented. The paper concentrates on examining the two aspects of ITP colour space: 1) ITP characteristics in terms of signal quantization at a given bit depth; 2) ITP compression performance. The analysis and simulation results show that ITP 10 bit has better properties than Y′CbCr-PQ 10bit in colour quantization, constant luminance, hue property and chroma subsampling, and it also has good compression efficiency. Therefore it is desirable to adopt ITP colour space as a new signal format for HDR/WCG video compression.

关键词: HDR, WCG, Y′CbCr, ITP, ICTCP