/
Illuminants.cs
72 lines (61 loc) · 2.37 KB
/
Illuminants.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
// Copyright (c) Six Labors.
// Licensed under the Apache License, Version 2.0.
namespace SixLabors.ImageSharp.ColorSpaces
{
/// <summary>
/// The well known standard illuminants.
/// Standard illuminants provide a basis for comparing images or colors recorded under different lighting
/// </summary>
/// <remarks>
/// Coefficients taken from: http://www.brucelindbloom.com/index.html?Eqn_ChromAdapt.html
/// <br />
/// Descriptions taken from: http://en.wikipedia.org/wiki/Standard_illuminant
/// </remarks>
public static class Illuminants
{
/// <summary>
/// Incandescent / Tungsten
/// </summary>
public static readonly CieXyz A = new CieXyz(1.09850F, 1F, 0.35585F);
/// <summary>
/// Direct sunlight at noon (obsoleteF)
/// </summary>
public static readonly CieXyz B = new CieXyz(0.99072F, 1F, 0.85223F);
/// <summary>
/// Average / North sky Daylight (obsoleteF)
/// </summary>
public static readonly CieXyz C = new CieXyz(0.98074F, 1F, 1.18232F);
/// <summary>
/// Horizon Light. ICC profile PCS
/// </summary>
public static readonly CieXyz D50 = new CieXyz(0.96422F, 1F, 0.82521F);
/// <summary>
/// Mid-morning / Mid-afternoon Daylight
/// </summary>
public static readonly CieXyz D55 = new CieXyz(0.95682F, 1F, 0.92149F);
/// <summary>
/// Noon Daylight: TelevisionF, sRGB color space
/// </summary>
public static readonly CieXyz D65 = new CieXyz(0.95047F, 1F, 1.08883F);
/// <summary>
/// North sky Daylight
/// </summary>
public static readonly CieXyz D75 = new CieXyz(0.94972F, 1F, 1.22638F);
/// <summary>
/// Equal energy
/// </summary>
public static readonly CieXyz E = new CieXyz(1F, 1F, 1F);
/// <summary>
/// Cool White Fluorescent
/// </summary>
public static readonly CieXyz F2 = new CieXyz(0.99186F, 1F, 0.67393F);
/// <summary>
/// D65 simulatorF, Daylight simulator
/// </summary>
public static readonly CieXyz F7 = new CieXyz(0.95041F, 1F, 1.08747F);
/// <summary>
/// Philips TL84F, Ultralume 40
/// </summary>
public static readonly CieXyz F11 = new CieXyz(1.00962F, 1F, 0.64350F);
}
}