A Simplified Motion-Picture Laboratory Control Method for Improved Color Duplication

Pytlak, John P.; Fleischer, Alfred W.

doi:10.5594/j07544

Cited by 7 publications

(1 citation statement)

References 9 publications

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“…In classic photochemical film historically used in cinema, a rough approximation to picture rendering is evidenced by the standard laboratory aim density practice used in motion picture film laboratories: Relative luminance in the scene of about 0.18 produces optical density of about 1.06 in the print and thereby produces relative luminance on‐screen of

10^{- 1.06}

or about 0.087. Approximating the end‐to‐end function as a pure power function, the resulting effective end‐to‐end power function exponent is about 1.4:

0 . 18^{g} = 10^{- 1.06} \approx 0.087; g = \frac{- 1.06}{\log 0.18} \approx 1.4 (6)

…”

Section: Modern Practice In Digital Cinemamentioning

confidence: 99%

Perceptual uniformity in digital image representation and display

Poynton

Funt

2013

Color Research & Application

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Digital image representation is perceptually uniform if a small perturbation of a component value—such as the digital code value used to represent red, green, blue, or luminance—produces a change in light output at a display that is approximately equally perceptible across the range of that value. Most digital image coding systems—including sRGB (used in desktop graphics), BT.709 (used in high‐definition television, HD), Adobe RGB (1998) (used in graphics arts), and DCI P3 RGB (used in digital cinema)—represent colour component (pixel) values in a perceptually uniform manner. However, this behavior is not well documented and is often shrouded in confusion. This article surveys perceptual uniformity in digital imaging and attempts to clarify some widely misunderstood aspects of image coding. © 2013 Wiley Periodicals, Inc. Col Res Appl, 39, 6–15, 2014

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10^{- 1.06}

or about 0.087. Approximating the end‐to‐end function as a pure power function, the resulting effective end‐to‐end power function exponent is about 1.4: