3
Tone Mapping
Most display devices available nowadays are not able to natively display HDR content. Entry level displays have a low contrast ratio of only around 200:1. Although high-end LCD televisions have a much higher contrast ratio, on average around 10,000:1, they are typically discretized at 8-bit and rarely at 10-bit per color channel. This means that color shades are limited to 255. In the last two decades, researchers have spent significant time and effort in order to compress the range of HDR images and videos so the data may be visualized more “naturally” on LDR displays.
Tone mapping is the operation that adapts the dynamic range of HDR content to suit the lower dynamic range available on a given display. This reduction of the ...
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