Editing YDbDr (section)

{{Short description|Colour space used in the SECAM analog color TV standard}}

[[File:YDbDr components.jpg|right|thumb|An image along with its <math>Y</math>, <math>D_B</math> and <math>D_R</math> components.]]

'''YDbDr''', sometimes written <math>YD_BD_R</math>, is the [[colour space]]<ref>{{cite book |url=https://books.google.com/books?id=R6VBtXAIi7oC&dq=YDbDr&pg=PA1146 |title=Issues in Electronic Circuits, Devices, and Materials: 2011 Edition |date=2012-01-09 |publisher=ScholarlyEditions |isbn=978-1-4649-6373-5 |pages=1146 |language=en}}</ref> used in the [[SECAM]] (adopted in [[France]] and some countries of  the former [[Eastern Bloc]]) analog colour [[television]] broadcasting standard.<ref name=":0">{{cite book |url=https://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.470-6-199811-S!!PDF-E.pdf |title=Recommendation ITU-R BT.470-6 - Conventional Television Systems |publisher=ITU-R |year=1998}}</ref><ref>{{cite book |last1=Shi |first1=Yun-Qing |url=https://books.google.com/books?id=DkqMDwAAQBAJ&dq=YDbDr&pg=PT43 |title=Image and Video Compression for Multimedia Engineering: Fundamentals, Algorithms, and Standards, Third Edition |last2=Sun |first2=Huifang |date=2019-03-07 |publisher=CRC Press |isbn=978-1-351-57864-6 |language=en}}</ref><ref>{{cite book |last=Dorf |first=Richard C. |url=https://books.google.com/books?id=N05sBgAAQBAJ&dq=YDbDr&pg=SA18-PA3 |title=Circuits, Signals, and Speech and Image Processing |date=2018-10-03 |publisher=CRC Press |isbn=978-1-4200-0308-6 |language=en}}</ref> It is very close to [[Y′UV|YUV]] (used on the [[PAL]] system) and its related colour spaces such as [[YIQ]] (used on the [[NTSC]] system), [[YPbPr]] and [[YCbCr]].<ref>{{cite book |last1=Hoang |first1=Dzung Tien |url=https://books.google.com/books?id=AT8fAQAAIAAJ&q=YDbDr |title=Efficient Algorithms for MPEG Video Compression |last2=Vitter |first2=Jeffrey Scott |date=2002-02-21 |publisher=Wiley |isbn=978-0-471-37942-3 |language=en}}</ref><ref>{{cite book |last1=Shum |first1=Heung-Yeung |url=https://books.google.com/books?id=93J3Z96ZVwoC&dq=YDbDr&pg=PA208 |title=Image-Based Rendering |last2=Chan |first2=Shing-Chow |last3=Kang |first3=Sing Bing|author3-link=Sing Bing Kang |date=2008-05-26 |publisher=Springer Science & Business Media |isbn=978-0-387-32668-9 |language=en}}</ref>

<math>YD_BD_R</math> is composed of three components: <math>Y</math>, <math>D_B</math> and <math>D_R</math>. <math>Y</math> is the [[Luma (video)|luminance]], <math>D_B</math> and <math>D_R</math> are the [[chrominance]] components, representing the [[R-Y|red]] and [[B-Y|blue colour differences]]<!--from Y-->.<ref>{{cite book |last=ASC |first=David Stump |url=https://books.google.com/books?id=A1I_EAAAQBAJ&dq=YDbDr&pg=PA75 |title=Digital Cinematography: Fundamentals, Tools, Techniques, and Workflows |date=2021-11-18 |publisher=Routledge |isbn=978-0-429-88901-1 |language=en}}</ref>