Luminance-Preserving Colour Conversion

With the advent of new television standards introducing UHD and HDR, backward compatibility with older devices becomes an issue. We propose a method for converting footage produced in BT.2100 colorimetry to a BT.709 compliant representation. The process preserves each pixel's luminance and is f...

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Bibliographic Details
Published inSMPTE 2016 Annual Technical Conference and Exhibition pp. 1 - 9
Main Authors Schweiger, Florian, Borer, Tim, Pindoria, Manish
Format Conference Proceeding
LanguageEnglish
Published SMPTE 01.10.2016
Subjects
BT.2020
BT.2100
BT.709
colour conversion
High Dynamic Range
Ultra-high-definition TV
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Summary:With the advent of new television standards introducing UHD and HDR, backward compatibility with older devices becomes an issue. We propose a method for converting footage produced in BT.2100 colorimetry to a BT.709 compliant representation. The process preserves each pixel's luminance and is fully reversible. Technically, our approach determines the exact polygonal shape of the effective BT.2100 and BT.709 gamuts at a given luminance and maps colours from one to the other by desaturating them.
ISBN:9781614829577
1614829578
DOI:10.5594/M001708