Coverage for colour/models/rgb/datasets/beta_rgb.py: 100%

1""" 

2Beta RGB Colourspace 

3==================== 

4 

5Define the *Beta RGB* colourspace: 

6 

7- :attr:`colour.models.RGB_COLOURSPACE_BETA_RGB`. 

8 

9References 

10---------- 

11- :cite:`Lindbloom2014a` : Lindbloom, B. (2014). RGB Working Space 

12 Information. Retrieved April 11, 2014, from 

13 http://www.brucelindbloom.com/WorkingSpaceInfo.html 

14""" 

15 

16from __future__ import annotations 

17 

18import typing 

19from functools import partial 

20 

21import numpy as np 

22 

23from colour.colorimetry import CCS_ILLUMINANTS 

24 

25if typing.TYPE_CHECKING: 

26 from colour.hints import NDArrayFloat 

27 

28from colour.models.rgb import RGB_Colourspace, gamma_function, normalised_primary_matrix 

29 

30__author__ = "Colour Developers" 

31__copyright__ = "Copyright 2013 Colour Developers" 

32__license__ = "BSD-3-Clause - https://opensource.org/licenses/BSD-3-Clause" 

33__maintainer__ = "Colour Developers" 

34__email__ = "colour-developers@colour-science.org" 

35__status__ = "Production" 

36 

37__all__ = [ 

38 "PRIMARIES_BETA_RGB", 

39 "WHITEPOINT_NAME_BETA_RGB", 

40 "CCS_WHITEPOINT_BETA_RGB", 

41 "MATRIX_BETA_RGB_TO_XYZ", 

42 "MATRIX_XYZ_TO_BETA_RGB", 

43 "RGB_COLOURSPACE_BETA_RGB", 

44] 

45 

46PRIMARIES_BETA_RGB: NDArrayFloat = np.array( 

47 [ 

48 [0.6888, 0.3112], 

49 [0.1986, 0.7551], 

50 [0.1265, 0.0352], 

51 ] 

52) 

53"""*Beta RGB* colourspace primaries.""" 

54 

55WHITEPOINT_NAME_BETA_RGB: str = "D50" 

56"""*Beta RGB* colourspace whitepoint name.""" 

57 

58CCS_WHITEPOINT_BETA_RGB: NDArrayFloat = CCS_ILLUMINANTS[ 

59 "CIE 1931 2 Degree Standard Observer" 

60][WHITEPOINT_NAME_BETA_RGB] 

61"""*Beta RGB* colourspace whitepoint chromaticity coordinates.""" 

62 

63MATRIX_BETA_RGB_TO_XYZ: NDArrayFloat = normalised_primary_matrix( 

64 PRIMARIES_BETA_RGB, CCS_WHITEPOINT_BETA_RGB 

65) 

66"""*Beta RGB* colourspace to *CIE XYZ* tristimulus values matrix.""" 

67 

68MATRIX_XYZ_TO_BETA_RGB: NDArrayFloat = np.linalg.inv(MATRIX_BETA_RGB_TO_XYZ) 

69"""*CIE XYZ* tristimulus values to *Beta RGB* colourspace matrix.""" 

70 

71RGB_COLOURSPACE_BETA_RGB: RGB_Colourspace = RGB_Colourspace( 

72 "Beta RGB", 

73 PRIMARIES_BETA_RGB, 

74 CCS_WHITEPOINT_BETA_RGB, 

75 WHITEPOINT_NAME_BETA_RGB, 

76 MATRIX_BETA_RGB_TO_XYZ, 

77 MATRIX_XYZ_TO_BETA_RGB, 

78 partial(gamma_function, exponent=1 / 2.2), 

79 partial(gamma_function, exponent=2.2), 

80) 

81RGB_COLOURSPACE_BETA_RGB.__doc__ = """ 

82*Beta RGB* colourspace. 

83 

84References 

85---------- 

86:cite:`Lindbloom2014a` 

87"""