Added: Weslee Heckel - Date: 11.02.2022 05:59 - Views: 41702 - Clicks: 1483
High Dynamic Range increases the difference between black and white beyond the contrast range of conventional television.
That means water can glisten, stars can twinkle, and sunlight can be golden, all whilst maintaining detail in the shadows. Project from - present.
Consumer television displays are getting brighter and capable of presenting stunning UHD images which are almost like looking through a window on to a scene. Having seen some fantastic HDR demonstrations we wanted to understand how our viewers could benefit from HDR in the future.
Broadcast television, and particularly live television, has a very complex content workflow. Our production and broadcast activities are spread over a of sites, each at different points in their equipment replacement cycle. We started to investigate how HDR could fit into a typical broadcast infrastructure such as ours. We concluded that any approach couldn't rely on end-to-end metadata as metadata often gets lost or becomes out-of-sync with the content as it passes through the production chain and that standard presentation techniques such as mixing video sources become overly complex with metadata.
We also wanted the captured al to be display-independent because a wide range of different displays and lighting conditions are used both Wf 4 single bbc production environments and in the home. Finally we wanted an approach that was compatible with our current 10 bit infrastructure and only needed changes to the cameras and critical monitoring displays.
In order to meet all of our requirements, HLG was deed to be a scene-referred system, just like conventional television. The al represents relative light levels in the original scene, which allows pictures from a single mastering process or live production to be adapted to give the same artistic effect on brighter or darker screens at home. Only the display itself needs information about its own capabilities and environment to faithfully render the scene-referred al, so metadata that describes the mastering display is not required.
We are working to develop a complete HDR ecosystem. This starts with fundamental research into the human visual system, which then informs development of technical systems including format conversion techniques, HDR production guidelines and adaptation requirements for displays of different brightness.
We then see these systems through to international standards that cover the whole video chain, from the basic video parametersthrough professional interfacescompressionprogramme delivery and broadcast and IP distribution. We also support consumer electronics manufacturers in verifying their implementations and developing consumer interfaces to the final display. High Dynamic Range will offer a step-change in quality to viewers, making pictures more realistic and more immersive.
In order for HDR programmes to be enjoyed in the home, a complete broadcast infrastructure must be in place.
We continue to add and link to a series of guides below, which describe the technical details of HDR and HLG in particular. Tweet This - Share on Facebook.
UHD production: What do I need to know? What does the future hold for UHD? This project is part of the Broadcast and Connected Systems section. This project is part of the Immersive and Interactive Content section.Wf 4 single bbc
email: [email protected] - phone:(366) 907-9841 x 6800
High Dynamic Range Television and Hybrid Log-Gamma