PQ

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Categories: Display

Perceptual Quantizer. An Electro-Optical Transfer function (EOTF) (non-linear characteristic of the display) which attempts to make the best use of the available number of bits within the video transmission path. It does this by taking into account the sensitivity of human vision to small brightness changes, and how this varies depending on whether they occur at low or high brightness. It allows a display of up to 10000 cd/m2 to display a 12 bit signal with no visible quantizing artefacts. It was developed by Dolby and standardized in SMPTE ST-2084.

See HDR