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HandWiki. High-Dynamic-Range Imaging. Encyclopedia. Available online: https://encyclopedia.pub/entry/31809 (accessed on 17 September 2026).
HandWiki. High-Dynamic-Range Imaging. Encyclopedia. Available at: https://encyclopedia.pub/entry/31809. Accessed September 17, 2026.
HandWiki. "High-Dynamic-Range Imaging" Encyclopedia, https://encyclopedia.pub/entry/31809 (accessed September 17, 2026).
HandWiki. (2022, October 28). High-Dynamic-Range Imaging. In Encyclopedia. https://encyclopedia.pub/entry/31809
HandWiki. "High-Dynamic-Range Imaging." Encyclopedia. Web. 28 October, 2022.
High-Dynamic-Range Imaging
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The content is sourced from: https://handwiki.org/wiki/High-dynamic-range_imaging

In photography and videography, HDR or high-dynamic-range imaging is the set of techniques used to reproduce a greater range of luminosity than that which is possible with standard photographic techniques. Standard techniques allow differentiation only within a certain range of brightness. Outside this range, no features are visible because in the brighter areas everything appears pure white, and pure black in the darker areas. The ratio between the maximum and the minimum of the tonal value in an image is known as the dynamic range. HDR is useful for recording many real-world scenes containing very bright, direct sunlight to extreme shade, or very faint nebulae. High-dynamic-range (HDR) images are often created by capturing and then combining several different, narrower range, exposures of the same subject matter. The two primary types of HDR images are computer renderings and images resulting from merging multiple low-dynamic-range (LDR) or standard-dynamic-range (SDR) photographs. HDR images can also be acquired using special image sensors, such as an oversampled binary image sensor. Due to the limitations of printing and display contrast, the extended luminosity range of input HDR images has to be compressed to be made visible. The method of rendering an HDR image to a standard monitor or printing device is called tone mapping. This method reduces the overall contrast of an HDR image to facilitate display on devices or printouts with lower dynamic range, and can be applied to produce images with preserved local contrast (or exaggerated for artistic effect). "HDR" may refer to the overall process, to the HDR imaging process, or to HDR imaging represented on a low-dynamic-range display such as a screen or standard .jpg image.

local contrast binary image videography

References

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