Demystifying High-Dynamic-Range Technology: A new evolution in digital media

Abstract

H igh-dynamic-range (HDR) technology has attracted a lot of attention recently, especially in commercial trade shows such as the Consumer Electronics Show, the National Association of Broadcasters Show, the International Broadcasting Convention, and Internationale Funkausstellung Berlin. However, a great deal of mystery still surrounds this new evolution in digital media.A new evolution in digital media.

Clustering Based Local Tone Mapping Algorithm for Displaying HDR Images on LDR Devices

“…A human can perceive luminance ranging from 10^-6 to 10^8 (cd/m2). Consumer display device normally presents luminance up to 500 (cd/m2) [1]. Since it has smaller dynamic range than HVS, it doesn't have the ability to represent bright and dark region simultaneously.…”

“…HDR image contains luminance up to 10,000 (cd/m2). Because an HDR image can represent a wide dynamic range, they can express dark and bright region similar to the human eye [1]. Becausethe dynamic range of the low dynamic range(LDR) device is smaller than the dynamic range of HDR image, the dynamic range must be compressed in order to display the HDR image on the LDR device.…”

Fifty shades of HDR

“…The dynamic range of a scene is the ratio of the maximum light intensity to the minimum light intensity [3]. As Fig.…”

Multistream video encoder for generating multiple dynamic range bitstreams

“…Advances in high-dynamic-range (HDR) technology allow video cameras to film content at a wider range of luminance than before [1]. This wider range allows for more details in very bright and very dark areas of the produced picture, which more closely resembles the scene as perceived by the human eye.…”