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25‐3: HDR Solution; Dynamic Drive on LED Video Screens
Author(s) -
Bravo Jorge Perez
Publication year - 2018
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.12551
Subject(s) - gamut , high dynamic range , computer science , computer vision , artificial intelligence , brightness , computer graphics (images) , feature (linguistics) , contrast (vision) , color depth , display resolution , display device , dynamic range , color image , image processing , image (mathematics) , optics , linguistics , philosophy , physics , operating system
High Dynamic Range (HDR) visual capability is becoming a key feature on display screens and an important factor on how displays are being specified; often referenced as quality of the video performance. Before, important factors in how a screen looks were contrast ratio, color accuracy that included bit depth, refresh rates, and resolution. Now we are looking at how more “brightness” can be added without over‐illumination of the colors providing a much wider dynamic range and a more natural effect. HDR expands the range of both contrast ratio and color bit depth significantly. Bright parts of the image will be much brighter, so the image seems to have more “depth.” Separately “specular highlights can be presented to the viewer dramatically emulating real world visual effects. Colors get expanded showing brighter natural colors. A wider color gamut comes along with HDR bringing more colors making the images more real. To make HDR work, both the video source (content) and the screen have to go side by side. The Screen should be able to produce more light than it normally does in certain areas of the image. The content is becoming now standard in the industry that some streaming video services and physical discs are offering HDR. How to make it work with LED screens?