Video encoding and decoding with chrominance sub-sampling

Codage et décodage vidéo avec sous-échantillonnage de chrominance

Videokodierung und Videodekodierung mit Chrominanzunterabtastung

Abstract

In video encoding, a video input received in 4:2:2 is resampled. Residuals are formed through the use of reference samples stored in the native 4:2:2, before transforming, quantising and entropy coding to form an encoded bitstream in the resampled format. The encoded bitstream contains a message indicating chrominance resampling and a selected chrominance resampling filter for the decoder to use. An encoder may have a first mode in which the 4:2:2 is up-sampled to 4:4:4 and a second mode in which the 4:2:2 is down-sampled to 4:2:0.

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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    EP-1742478-A1January 10, 2007Thomson LicensingMéthode et appareil pour le codage et le décodage échelonnable de la chrominance

NO-Patent Citations (5)

    Title
    "4:2:2 / 4:2:0 Format Conversion Minimizing Color Difference Signal Degradation in Concatenated Operations - Filtering", 30 January 2012 (2012-01-30), pages 1 - 11, XP055094080, ISBN: 978-1-61-482653-8, Retrieved from the Internet [retrieved on 20131218]
    AMMAR N ET AL: "Switched SVC Up-sampling Filter", 18. JVT MEETING; 75. MPEG MEETING; 14-01-2006 - 20-01-2006; BANGKOK,TH; (JOINT VIDEO TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVT-R075, 11 January 2006 (2006-01-11), XP030006342, ISSN: 0000-0410
    ANDREA GABRIELLINI ET AL: "AHG7: On processing 4:2:2 chroma format", 11. JCT-VC MEETING; 102. MPEG MEETING; 10-10-2012 - 19-10-2012; SHANGHAI; (JOINT COLLABORATIVE TEAM ON VIDEO CODING OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ); URL: HTTP://WFTP3.ITU.INT/AV-ARCH/JCTVC-SITE/, no. JCTVC-K0286, 3 October 2012 (2012-10-03), XP030113168
    CHEN YING ET AL: "4:2:0 chroma sample format for phase difference eliminating and color space scalability", 15. JVT MEETING; 72. MPEG MEETING; 16-04-2005 - 22-04-2005; BUSAN, KR; (JOINT VIDEO TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVT-O078, 16 April 2005 (2005-04-16), pages 1 - 13, XP002362574
    KAWAMURA K ET AL: "AHG12: 4:2:2/4:4:4 chroma format extension for HEVC Version 2", 10. JCT-VC MEETING; 101. MPEG MEETING; 11-7-2012 - 20-7-2012; STOCKHOLM; (JOINT COLLABORATIVE TEAM ON VIDEO CODING OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ); URL: HTTP://WFTP3.ITU.INT/AV-ARCH/JCTVC-SITE/, no. JCTVC-J0357, 3 July 2012 (2012-07-03), XP030112719

Cited By (1)

    Publication numberPublication dateAssigneeTitle
    WO-2016145243-A1September 15, 2016Apple Inc.Adaptive chroma downsampling and color space conversion techniques