Photonics Dictionary

high dynamic range

High dynamic range (HDR) refers to a technology that allows for a broader and more dynamic range of luminosity in visual content, such as images or videos. It is particularly associated with displays like TVs, monitors, and cameras. The dynamic range is the ratio between the darkest and brightest parts of an image.

In the context of imaging, HDR techniques capture and display a wider range of brightness levels, enabling more details to be visible in both the shadows and highlights of an image. This is achieved by combining multiple images taken at different exposure levels to create a composite image that preserves details in both bright and dark areas.

In the context of displays, HDR allows for a more lifelike and realistic representation of images by supporting a greater range of brightness and color. HDR displays can reproduce a broader spectrum of colors and greater contrast between the brightest whites and the darkest blacks, resulting in a more visually stunning and immersive experience for viewers.

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