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Article | REF: TE5375 V1

Ultra-High Definition images and television (UHD)

Authors: Marc LÉGER, Christophe NELSON, Jean-Noël GOUYET

Publication date: December 10, 2019

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1. ITU-R BT.2020 production format parameters

In 2012, the recommendation ITU-R BT.2020 on the evolution of television. It specified the parameters to be evolved, or revolutionized, to improve image capture, processing and rendering. This recommendation, often referred to under the generic term "UHD" for Ultra High Definition, brings several improvements, such as an increase in the number of pixels, but also an increase in the number of possible colors, an increase in the number of frames per second and the end of interlace.

1.1 Ultra High Definition (UHD-1/UHD-2)

The definition of an image corresponds to the number of pixels or dots that make up the image. But why do we always need more definition, and therefore more pixels?...

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