Coverage for colour/models/rgb/transfer_functions/tests/test_smpte_240m.py: 100%

1""" 

2Define the unit tests for the 

3:mod:`colour.models.rgb.transfer_functions.smpte_240m` module. 

4""" 

5 

6import numpy as np 

7 

8from colour.constants import TOLERANCE_ABSOLUTE_TESTS 

9from colour.models.rgb.transfer_functions import eotf_SMPTE240M, oetf_SMPTE240M 

10from colour.utilities import domain_range_scale, ignore_numpy_errors 

11 

12__author__ = "Colour Developers" 

13__copyright__ = "Copyright 2013 Colour Developers" 

14__license__ = "BSD-3-Clause - https://opensource.org/licenses/BSD-3-Clause" 

15__maintainer__ = "Colour Developers" 

16__email__ = "colour-developers@colour-science.org" 

17__status__ = "Production" 

18 

19__all__ = [ 

20 "TestOetf_SMPTE240M", 

21 "TestEotf_SMPTE240M", 

22] 

23 

24 

25class TestOetf_SMPTE240M: 

26 """ 

27 Define :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

28oetf_SMPTE240M` definition unit tests methods. 

29 """ 

30 

31 def test_oetf_SMPTE240M(self) -> None: 

32 """ 

33 Test :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

34oetf_SMPTE240M` definition. 

35 """ 

36 

37 np.testing.assert_allclose( 

38 oetf_SMPTE240M(0.0), 0.0, atol=TOLERANCE_ABSOLUTE_TESTS 

39 ) 

40 

41 np.testing.assert_allclose( 

42 oetf_SMPTE240M(0.02), 

43 0.080000000000000, 

44 atol=TOLERANCE_ABSOLUTE_TESTS, 

45 ) 

46 

47 np.testing.assert_allclose( 

48 oetf_SMPTE240M(0.18), 

49 0.402285796753870, 

50 atol=TOLERANCE_ABSOLUTE_TESTS, 

51 ) 

52 

53 np.testing.assert_allclose( 

54 oetf_SMPTE240M(1.0), 1.0, atol=TOLERANCE_ABSOLUTE_TESTS 

55 ) 

56 

57 def test_n_dimensional_oetf_SMPTE240M(self) -> None: 

58 """ 

59 Test :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

60oetf_SMPTE240M` definition n-dimensional arrays support. 

61 """ 

62 

63 L_c = 0.18 

64 V_c = oetf_SMPTE240M(L_c) 

65 

66 L_c = np.tile(L_c, 6) 

67 V_c = np.tile(V_c, 6) 

68 np.testing.assert_allclose( 

69 oetf_SMPTE240M(L_c), V_c, atol=TOLERANCE_ABSOLUTE_TESTS 

70 ) 

71 

72 L_c = np.reshape(L_c, (2, 3)) 

73 V_c = np.reshape(V_c, (2, 3)) 

74 np.testing.assert_allclose( 

75 oetf_SMPTE240M(L_c), V_c, atol=TOLERANCE_ABSOLUTE_TESTS 

76 ) 

77 

78 L_c = np.reshape(L_c, (2, 3, 1)) 

79 V_c = np.reshape(V_c, (2, 3, 1)) 

80 np.testing.assert_allclose( 

81 oetf_SMPTE240M(L_c), V_c, atol=TOLERANCE_ABSOLUTE_TESTS 

82 ) 

83 

84 def test_domain_range_scale_oetf_SMPTE240M(self) -> None: 

85 """ 

86 Test :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

87oetf_SMPTE240M` definition domain and range scale support. 

88 """ 

89 

90 L_c = 0.18 

91 V_c = oetf_SMPTE240M(L_c) 

92 

93 d_r = (("reference", 1), ("1", 1), ("100", 100)) 

94 for scale, factor in d_r: 

95 with domain_range_scale(scale): 

96 np.testing.assert_allclose( 

97 oetf_SMPTE240M(L_c * factor), 

98 V_c * factor, 

99 atol=TOLERANCE_ABSOLUTE_TESTS, 

100 ) 

101 

102 @ignore_numpy_errors 

103 def test_nan_oetf_SMPTE240M(self) -> None: 

104 """ 

105 Test :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

106oetf_SMPTE240M` definition nan support. 

107 """ 

108 

109 oetf_SMPTE240M(np.array([-1.0, 0.0, 1.0, -np.inf, np.inf, np.nan])) 

110 

111 

112class TestEotf_SMPTE240M: 

113 """ 

114 Define :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

115eotf_SMPTE240M` definition unit tests methods. 

116 """ 

117 

118 def test_eotf_SMPTE240M(self) -> None: 

119 """ 

120 Test :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

121eotf_SMPTE240M` definition. 

122 """ 

123 

124 np.testing.assert_allclose( 

125 eotf_SMPTE240M(0.0), 0.0, atol=TOLERANCE_ABSOLUTE_TESTS 

126 ) 

127 

128 np.testing.assert_allclose( 

129 eotf_SMPTE240M(0.080000000000000), 

130 0.02, 

131 atol=TOLERANCE_ABSOLUTE_TESTS, 

132 ) 

133 

134 np.testing.assert_allclose( 

135 eotf_SMPTE240M(0.402285796753870), 

136 0.18, 

137 atol=TOLERANCE_ABSOLUTE_TESTS, 

138 ) 

139 

140 np.testing.assert_allclose( 

141 eotf_SMPTE240M(1.0), 1.0, atol=TOLERANCE_ABSOLUTE_TESTS 

142 ) 

143 

144 def test_n_dimensional_eotf_SMPTE240M(self) -> None: 

145 """ 

146 Test :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

147eotf_SMPTE240M` definition n-dimensional arrays support. 

148 """ 

149 

150 V_r = 0.402285796753870 

151 L_r = eotf_SMPTE240M(V_r) 

152 

153 V_r = np.tile(V_r, 6) 

154 L_r = np.tile(L_r, 6) 

155 np.testing.assert_allclose( 

156 eotf_SMPTE240M(V_r), L_r, atol=TOLERANCE_ABSOLUTE_TESTS 

157 ) 

158 

159 V_r = np.reshape(V_r, (2, 3)) 

160 L_r = np.reshape(L_r, (2, 3)) 

161 np.testing.assert_allclose( 

162 eotf_SMPTE240M(V_r), L_r, atol=TOLERANCE_ABSOLUTE_TESTS 

163 ) 

164 

165 V_r = np.reshape(V_r, (2, 3, 1)) 

166 L_r = np.reshape(L_r, (2, 3, 1)) 

167 np.testing.assert_allclose( 

168 eotf_SMPTE240M(V_r), L_r, atol=TOLERANCE_ABSOLUTE_TESTS 

169 ) 

170 

171 def test_domain_range_scale_eotf_SMPTE240M(self) -> None: 

172 """ 

173 Test :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

174eotf_SMPTE240M` definition domain and range scale support. 

175 """ 

176 

177 V_r = 0.402285796753870 

178 L_r = eotf_SMPTE240M(V_r) 

179 

180 d_r = (("reference", 1), ("1", 1), ("100", 100)) 

181 for scale, factor in d_r: 

182 with domain_range_scale(scale): 

183 np.testing.assert_allclose( 

184 eotf_SMPTE240M(V_r * factor), 

185 L_r * factor, 

186 atol=TOLERANCE_ABSOLUTE_TESTS, 

187 ) 

188 

189 @ignore_numpy_errors 

190 def test_nan_eotf_SMPTE240M(self) -> None: 

191 """ 

192 Test :func:`colour.models.rgb.transfer_functions.smpte_240m.\ 

193eotf_SMPTE240M` definition nan support. 

194 """ 

195 

196 eotf_SMPTE240M(np.array([-1.0, 0.0, 1.0, -np.inf, np.inf, np.nan]))