High dynamic range

lastmod 2025-05-16created 2019-07-256 edits

High dynamic range (HDR) is a dynamic range higher than what is considered to be standard dynamic range. The term is often used in discussing display devices, photography, 3D rendering, and sound recording including digital imaging and digital audio production. The term may apply to an analog or digitized signal, or to the means of recording, processing, and reproducing such signals.

HDR10+

A standard developed on April 20, 2017, led by Samsung and Amazon Video, that addresses the shortcomings of the existing HDR10.

Background

As display devices evolve, high-quality devices with wider and richer contrast (HDR) and color expressiveness (10-bit) are appearing. As part of the effort to make effective use of these new display technologies, new technical standards for transmitting HDR (High Dynamic Range) video have emerged, and the foundational one among them is the HDR10 standard, announced on August 27, 2015.

As a side effect of this rapid technological development, the interests of the various business players in video production, distribution, and display devices have clashed, producing a variety of technical inconsistencies, and as a result unnecessary market misconceptions about HDR have arisen. In particular, even for the same HDR video, output quality varies greatly depending on the playback device used, which is partly due to fundamental technical limitations of HDR10.

HDR10+ was researched as an advanced version of HDR10, with the goal of providing more consistent video quality across a wider range of display devices.

Projects

• superwhite - Display very bright white on HDR-capable devices

See also

• Wide dynamic range
• Dynamic range
• Standard dynamic range (SDR)

Favorite site

• Wikipedia (en) High dynamic range
• SDR (Standard Dynamic Range) and HDR (High Dynamic Range) in video
• What is HDR? | GeekNews
  • [Original] What is HDR, anyway?
  • HDR (High Dynamic Range) is a term that refers to different concepts in photography and displays
  • In cameras, there is "HDR mode", which merges multiple exposures to extend contrast; in displays, there is the "HDR screen", which represents a wider brightness range
  • Recent smartphone cameras automatically merge multiple photos and try to produce natural-looking images through AI-driven tone mapping
  • However, these AI algorithms often alter images contrary to the user's intent or lose detail
  • Camera apps such as Halide offer more freedom of expression, including "shooting without AI", manual tone mapping, and an option for users to choose between SDR/HDR themselves