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HDR : qu\u2019est-ce que c\u2019est ?<\/span><\/h2>\n

HDR, signifie High Dynamic Range<\/strong> ou \u201chaute gamme dynamique<\/em>\u201d. C'est une technologie permettant d\u2019accentuer la luminance et de corriger la saturation des couleurs dans des contenus vid\u00e9o et photo. On a un r\u00e9sultat qui donne une image plus r\u00e9aliste avec des couleurs qui sont plus naturelles am\u00e9liorant significativement les contrastes dans une vid\u00e9o. Bien que ce terme n\u2019est pas encore aussi r\u00e9pandu que ne l\u2019est la 4K ou encore l\u2019Ultra HD, il est certain que nous allons en entendre parler de plus en plus. Nous allons pr\u00e9senter un exemple concret d\u2019une image avec et sans HDR<\/strong> pour que vous puissiez avoir une id\u00e9e de ce que cela apporte r\u00e9ellement.<\/p>\n

\"HDRLe r\u00e9sultat parle de lui m\u00eame, nous avons plus de d\u00e9tail dans les zones sombres et \u00e0 la fois dans les zones les plus claires. Il est important de noter que les blancs sont correctement restitu\u00e9s sans que l\u2019image paraisse satur\u00e9e, on a un r\u00e9sultat saisissant qui se v\u00e9rifie dans la pratique. Cette technologie commence \u00e0 se montrer dans les jeux vid\u00e9os, les vid\u00e9os (films et s\u00e9ries) et nous commen\u00e7ons \u00e0 apercevoir de plus en plus de smartphones compatibles HDR<\/strong>.<\/p>\n

Nous avons \u00e9galement plusieurs normes HDR qui se font concurrence, le standard HDR10 est ouvert et sera sans doute le plus utilis\u00e9 sur le march\u00e9, sa particularit\u00e9 \u00e9tant d\u2019avoir une quantification des couleurs de l\u2019ordre de 10 bits. Il en existe d\u2019autres comme Dolby Vision qui n\u2019est pas un standard ouvert puisqu\u2019il appartient \u00e0 Dolby comme son nom l\u2019indique. Sa particularit\u00e9 \u00e9tant de pousser les couleurs \u00e0 12 bits. Les diff\u00e9rentes contraintes pour en disposer font que la plupart des productions pr\u00e9f\u00e9reront sans doute se tourner vers son concurrent le HDR10.<\/p>\n

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