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

1""" 

2Define the unit tests for the :mod:`colour.models.rgb.transfer_functions.\ 

3davinci_intermediate` module. 

4""" 

5 

6import numpy as np 

7 

8from colour.constants import TOLERANCE_ABSOLUTE_TESTS 

9from colour.models.rgb.transfer_functions import ( 

10 oetf_DaVinciIntermediate, 

11 oetf_inverse_DaVinciIntermediate, 

12) 

13from colour.utilities import domain_range_scale, ignore_numpy_errors 

14 

15__author__ = "Colour Developers" 

16__copyright__ = "Copyright 2013 Colour Developers" 

17__license__ = "BSD-3-Clause - https://opensource.org/licenses/BSD-3-Clause" 

18__maintainer__ = "Colour Developers" 

19__email__ = "colour-developers@colour-science.org" 

20__status__ = "Production" 

21 

22__all__ = [ 

23 "TestOetf_DaVinciIntermediate", 

24 "TestOetf_inverse_DaVinciIntermediate", 

25] 

26 

27 

28class TestOetf_DaVinciIntermediate: 

29 """ 

30 Define :func:`colour.models.rgb.transfer_functions.davinci_intermediate.\ 

31oetf_DaVinciIntermediate` definition unit tests methods. 

32 """ 

33 

34 def test_oetf_DaVinciIntermediate(self) -> None: 

35 """ 

36 Test :func:`colour.models.rgb.transfer_functions.\ 

37davinci_intermediate.oetf_DaVinciIntermediate` definition. 

38 """ 

39 

40 np.testing.assert_allclose( 

41 oetf_DaVinciIntermediate(-0.01), 

42 -0.104442685500000, 

43 atol=TOLERANCE_ABSOLUTE_TESTS, 

44 ) 

45 

46 np.testing.assert_allclose( 

47 oetf_DaVinciIntermediate(0.0), 0.0, atol=TOLERANCE_ABSOLUTE_TESTS 

48 ) 

49 

50 np.testing.assert_allclose( 

51 oetf_DaVinciIntermediate(0.18), 

52 0.336043272384855, 

53 atol=TOLERANCE_ABSOLUTE_TESTS, 

54 ) 

55 

56 np.testing.assert_allclose( 

57 oetf_DaVinciIntermediate(1.0), 

58 0.513837441116225, 

59 atol=TOLERANCE_ABSOLUTE_TESTS, 

60 ) 

61 

62 np.testing.assert_allclose( 

63 oetf_DaVinciIntermediate(100.0), 

64 0.999999987016872, 

65 atol=TOLERANCE_ABSOLUTE_TESTS, 

66 ) 

67 

68 def test_n_dimensional_oetf_DaVinciIntermediate(self) -> None: 

69 """ 

70 Test :func:`colour.models.rgb.transfer_functions.\ 

71davinci_intermediate.oetf_DaVinciIntermediate` definition n-dimensional arrays 

72 support. 

73 """ 

74 

75 L = 0.18 

76 V = oetf_DaVinciIntermediate(L) 

77 

78 L = np.tile(L, 6) 

79 V = np.tile(V, 6) 

80 np.testing.assert_allclose( 

81 oetf_DaVinciIntermediate(L), V, atol=TOLERANCE_ABSOLUTE_TESTS 

82 ) 

83 

84 L = np.reshape(L, (2, 3)) 

85 V = np.reshape(V, (2, 3)) 

86 np.testing.assert_allclose( 

87 oetf_DaVinciIntermediate(L), V, atol=TOLERANCE_ABSOLUTE_TESTS 

88 ) 

89 

90 L = np.reshape(L, (2, 3, 1)) 

91 V = np.reshape(V, (2, 3, 1)) 

92 np.testing.assert_allclose( 

93 oetf_DaVinciIntermediate(L), V, atol=TOLERANCE_ABSOLUTE_TESTS 

94 ) 

95 

96 def test_domain_range_scale_oetf_DaVinciIntermediate(self) -> None: 

97 """ 

98 Test :func:`colour.models.rgb.transfer_functions.\ 

99davinci_intermediate.oetf_DaVinciIntermediate` definition domain and range 

100 scale support. 

101 """ 

102 

103 L = 0.18 

104 V = oetf_DaVinciIntermediate(L) 

105 

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

107 for scale, factor in d_r: 

108 with domain_range_scale(scale): 

109 np.testing.assert_allclose( 

110 oetf_DaVinciIntermediate(L * factor), 

111 V * factor, 

112 atol=TOLERANCE_ABSOLUTE_TESTS, 

113 ) 

114 

115 @ignore_numpy_errors 

116 def test_nan_oetf_DaVinciIntermediate(self) -> None: 

117 """ 

118 Test :func:`colour.models.rgb.transfer_functions.\ 

119davinci_intermediate.oetf_DaVinciIntermediate` definition nan support. 

120 """ 

121 

122 oetf_DaVinciIntermediate(np.array([-1.0, 0.0, 1.0, -np.inf, np.inf, np.nan])) 

123 

124 

125class TestOetf_inverse_DaVinciIntermediate: 

126 """ 

127 Define :func:`colour.models.rgb.transfer_functions.\ 

128davinci_intermediate.oetf_inverse_DaVinciIntermediate` definition unit tests 

129 methods. 

130 """ 

131 

132 def test_oetf_inverse_DaVinciIntermediate(self) -> None: 

133 """ 

134 Test :func:`colour.models.rgb.transfer_functions.\ 

135davinci_intermediate.oetf_inverse_DaVinciIntermediate` definition. 

136 """ 

137 

138 np.testing.assert_allclose( 

139 oetf_inverse_DaVinciIntermediate(-0.104442685500000), 

140 -0.01, 

141 atol=TOLERANCE_ABSOLUTE_TESTS, 

142 ) 

143 

144 np.testing.assert_allclose( 

145 oetf_inverse_DaVinciIntermediate(0.0), 

146 0.0, 

147 atol=TOLERANCE_ABSOLUTE_TESTS, 

148 ) 

149 

150 np.testing.assert_allclose( 

151 oetf_inverse_DaVinciIntermediate(0.336043272384855), 

152 0.18, 

153 atol=TOLERANCE_ABSOLUTE_TESTS, 

154 ) 

155 

156 np.testing.assert_allclose( 

157 oetf_inverse_DaVinciIntermediate(0.513837441116225), 

158 1.0, 

159 atol=TOLERANCE_ABSOLUTE_TESTS, 

160 ) 

161 

162 np.testing.assert_allclose( 

163 oetf_inverse_DaVinciIntermediate(0.999999987016872), 

164 100.0, 

165 atol=TOLERANCE_ABSOLUTE_TESTS, 

166 ) 

167 

168 def test_n_dimensional_oetf_inverse_DaVinciIntermediate(self) -> None: 

169 """ 

170 Test :func:`colour.models.rgb.transfer_functions.\ 

171davinci_intermediate.oetf_inverse_DaVinciIntermediate` definition n-dimensional 

172 arrays support. 

173 """ 

174 

175 V = 0.336043272384855 

176 L = oetf_inverse_DaVinciIntermediate(V) 

177 

178 V = np.tile(V, 6) 

179 L = np.tile(L, 6) 

180 np.testing.assert_allclose( 

181 oetf_inverse_DaVinciIntermediate(V), 

182 L, 

183 atol=TOLERANCE_ABSOLUTE_TESTS, 

184 ) 

185 

186 V = np.reshape(V, (2, 3)) 

187 L = np.reshape(L, (2, 3)) 

188 np.testing.assert_allclose( 

189 oetf_inverse_DaVinciIntermediate(V), 

190 L, 

191 atol=TOLERANCE_ABSOLUTE_TESTS, 

192 ) 

193 

194 V = np.reshape(V, (2, 3, 1)) 

195 L = np.reshape(L, (2, 3, 1)) 

196 np.testing.assert_allclose( 

197 oetf_inverse_DaVinciIntermediate(V), 

198 L, 

199 atol=TOLERANCE_ABSOLUTE_TESTS, 

200 ) 

201 

202 def test_domain_range_scale_oetf_inverse_DaVinciIntermediate(self) -> None: 

203 """ 

204 Test :func:`colour.models.rgb.transfer_functions.\ 

205davinci_intermediate.oetf_inverse_DaVinciIntermediate` definition domain and 

206 range scale support. 

207 """ 

208 

209 V = 0.336043272384855 

210 L = oetf_inverse_DaVinciIntermediate(V) 

211 

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

213 for scale, factor in d_r: 

214 with domain_range_scale(scale): 

215 np.testing.assert_allclose( 

216 oetf_inverse_DaVinciIntermediate(V * factor), 

217 L * factor, 

218 atol=TOLERANCE_ABSOLUTE_TESTS, 

219 ) 

220 

221 @ignore_numpy_errors 

222 def test_nan_oetf_inverse_DaVinciIntermediate(self) -> None: 

223 """ 

224 Test :func:`colour.models.rgb.transfer_functions.\ 

225davinci_intermediate.oetf_inverse_DaVinciIntermediate` definition nan support. 

226 """ 

227 

228 oetf_inverse_DaVinciIntermediate( 

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

230 )