Appendix A – Glossary of Acronyms
APL | Average Picture Level |
HDR | High Dynamic Range |
SDR | Standard Dynamic Range |
4K | 4096×2160. DCI 4K or Full 4K, a Commercial Cinema resolution |
UHD | 3840×2160. Ultra High Definition, a Consumer Video resolution |
HD | 1920×1080. aka Full HD. A Consumer Video resolution. |
1080p | 1920×1080. HD or Full HD, a consumer video resolution |
Dolby Vision | A consumer HDR delivery format |
HDR10 | A consumer HDR delivery format. (Not an official standard) |
DeltaE | A measurement of error in greyscale or color rendering |
D65 | A specific white point. x 0.3127, y 0.3290 |
EOTF | Electro Optical Transfer Function. (Display side) |
OETF | Opto-electrical Transfer Function. (Camera side) |
Gamma | A generic EOTF used for SDR |
BT.1886 | A specific gamma based on 2.4, used in SDR |
CD/M2 | Candela per meter squared |
Nit | Metric measurement of light output equal to one cd/m2 |
P3 | Aka DCI-P3, a Commercial Cinema color space / gamut |
ST.2084 | An EOTF for HDR standard from SMPTE |
PQ | Perceptual Quantizer, a nickname for ST.2084 |
CMS | Color Management System |
BT.709 | A color space / gamut for HD SDR and UHD SDR |
BT.2020 | A color space / gamut for UHD SDR and UHD HDR |