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SDR video with a conventional gamma curve and a bit depth of 8-bits per sample has a dynamic range of about 6 stops, assuming a luminance quantisation threshold of 5% is used. [10] A threshold of 5% is used in the paper (instead of the standard 2% threshold) to allow for the typical display being dimmer than ideal.
SDR, HDR, and WDR are camera terms that refer to what type of imaging tech your device uses to capture details in over- and under-exposed lighting environments.
HDR video refers to a video encoded in an HDR format. Thoses HDR video have a greater bit depth, luminance and color volume than standard dynamic range (SDR) video which uses a conventional gamma curve. [22] On January 4, 2016, the Ultra HD Alliance announced their certification requirements for an HDR display.
[1] [3] [4] It is also defined in ATSC 3.0, Digital Video Broadcasting (DVB) UHD-1 Phase 2, and International Telecommunication Union (ITU) Rec. 2100. [5] [6] [7] Chart showing a conventional SDR gamma curve and the hybrid log–gamma curve. HLG uses a logarithmic curve for the upper half of the signal values, which allows for a larger dynamic ...
Tone mapped high-dynamic-range (HDR) image of St. Kentigern's Church in Blackpool, Lancashire, England. In photography and videography, multi-exposure HDR capture is a technique that creates high dynamic range (HDR) images (or extended dynamic range images) by taking and combining multiple exposures of the same subject matter at different exposures.
SDR for HD video uses a system chromaticity (chromaticity of color primaries and white point) specified in Rec. 709 (same as sRGB). [86] SDR for SD used many different primaries, as said in BT.601, SMPTE 170M and BT.470. HDR is commonly associated to a WCG (a system chromaticity wider than BT.709).
Tone mapped high-dynamic-range (HDR) image of St. Kentigerns Roman Catholic Church in Blackpool, Lancashire, England, UK. Tone mapping is a technique used in image processing and computer graphics to map one set of colors to another to approximate the appearance of high-dynamic-range (HDR) images in a medium that has a more limited dynamic range.
Cameras and monitors may use any of these modes. Video captured in progressive mode can be recorded, broadcast, or streamed in progressive or progressive segmented frame modes. Video captured using an interlaced mode must be distributed as interlace unless a de-interlace process is applied in post production.