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High dynamic range (HDR), also known as wide dynamic range, extended dynamic range, or expanded dynamic range, is a signal with a higher dynamic range than usual. The term is often used in discussing the dynamic ranges of images , videos , audio or radio .
Dolby Vision is a set of technologies developed by Dolby Laboratories for high dynamic range (HDR) video. [1] [2] [3] It covers content creation, distribution, and playback.[1] [4] [5] [6] It includes dynamic metadata that define the aspect ratio and adjust the picture based on a display's capabilities on a per-shot or even per-frame basis, optimizing the presentation.
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.
The earliest known smartphone to feature high dynamic range filming is the Sony Xperia Z, 2013, where frames are arrayed by changing the exposure every two lines of pixels to create a spatially varying exposure (SVE). [12] [13] As of 2019, high-end camera phones can produce video with up to 4K resolution at 60 frames per second for smoothness. [14]
High dynamic range, in audio or video High-dynamic-range rendering, in computer graphics; High-dynamic-range imaging, in digital photography; High-dynamic-range video, in video; Homology directed repair, a DNA repair system in cells; Hot dry rock, a form of geothermal energy production; GATA3, a protein also named HDR
High-dynamic-range imaging (HDR) addresses this problem by increasing the dynamic range of images by either increasing the dynamic range of the image sensor, or; using exposure bracketing and post-processing the separate images to create a single image with a higher dynamic range.
A key component was a single camera-recorder unit, eliminating a cable between the camera and recorder and increasing the camera operator's freedom. The Betacam used the same cassette format (0.5 inches or 1.3 centimetres tape) as the Betamax, but with a different, incompatible recording format. It became standard equipment for broadcast news. [4]
High-dynamic-range video, a technology related to HDR displays and formats such as HDR10, Dolby Vision, HDR10+, and others. High-dynamic-range rendering , techniques in computer-generated imagery Multi-exposure HDR capture , a technique for capturing high dynamic range images and videos