2 // Copyright 2013 Christian Henning
3 // Copyright 2013 Davide Anastasia <davideanastasia@users.sourceforge.net>
5 // Distributed under the Boost Software License, Version 1.0
6 // See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt
9 #include <boost/gil.hpp>
10 #include <boost/gil/extension/toolbox/color_spaces/lab.hpp>
12 #if defined(BOOST_CLANG)
13 #pragma clang diagnostic push
14 #pragma clang diagnostic ignored "-Wfloat-equal"
17 #if defined(BOOST_GCC) && (BOOST_GCC >= 40900)
18 #pragma GCC diagnostic push
19 #pragma GCC diagnostic ignored "-Wfloat-equal"
22 #include <boost/test/unit_test.hpp>
24 #if defined(BOOST_CLANG)
25 #pragma clang diagnostic pop
28 #if defined(BOOST_GCC) && (BOOST_GCC >= 40900)
29 #pragma GCC diagnostic pop
34 using namespace boost;
36 #define TEST_CHECK_CLOSE(a, b) \
37 BOOST_CHECK_CLOSE(a, b, 0.0005f)
39 BOOST_AUTO_TEST_SUITE( toolbox_tests )
41 BOOST_AUTO_TEST_CASE( Lab_to_XYZ_Test1 )
43 gil::lab32f_pixel_t lab_pixel(40.366198f, 53.354489f, 26.117702f);
44 gil::xyz32f_pixel_t xyz_pixel;
46 gil::color_convert(lab_pixel, xyz_pixel);
48 TEST_CHECK_CLOSE(static_cast<float>(xyz_pixel[0]), 0.197823f);
49 TEST_CHECK_CLOSE(static_cast<float>(xyz_pixel[1]), 0.114731f);
50 TEST_CHECK_CLOSE(static_cast<float>(xyz_pixel[2]), 0.048848f);
53 BOOST_AUTO_TEST_CASE(Lab_to_XYZ_Test2)
55 gil::lab32f_pixel_t lab_pixel(50, 0, 0);
56 gil::xyz32f_pixel_t xyz_pixel;
58 gil::color_convert(lab_pixel, xyz_pixel);
60 TEST_CHECK_CLOSE(static_cast<float>(xyz_pixel[0]), 0.175064f);
61 TEST_CHECK_CLOSE(static_cast<float>(xyz_pixel[1]), 0.184187f);
62 TEST_CHECK_CLOSE(static_cast<float>(xyz_pixel[2]), 0.200548f);
65 BOOST_AUTO_TEST_CASE(XYZ_to_Lab_Test1)
67 gil::lab32f_pixel_t lab_pixel;
68 gil::xyz32f_pixel_t xyz_pixel(0.085703f, 0.064716f, 0.147082f);
70 gil::color_convert(xyz_pixel, lab_pixel);
72 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[0]), 30.572438f);
73 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[1]), 23.4674f);
74 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[2]), -22.322275f);
77 BOOST_AUTO_TEST_CASE(RGB_to_Lab_Test1)
79 gil::rgb32f_pixel_t rgb_pixel(0.75f, 0.5f, 0.25f);
80 gil::lab32f_pixel_t lab_pixel;
82 gil::color_convert(rgb_pixel, lab_pixel);
84 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[0]), 58.7767f);
85 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[1]), 18.5851f);
86 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[2]), 43.7975f);
89 BOOST_AUTO_TEST_CASE(RGB_to_Lab_Test2)
91 gil::rgb32f_pixel_t rgb_pixel(1.f, 0.f, 0.f);
92 gil::lab32f_pixel_t lab_pixel;
94 gil::color_convert(rgb_pixel, lab_pixel);
96 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[0]), 53.2408f);
97 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[1]), 80.0925f);
98 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[2]), 67.2032f);
101 BOOST_AUTO_TEST_CASE(RGB_to_Lab_Test3)
103 gil::rgb32f_pixel_t rgb_pixel(0.f, 1.f, 0.f);
104 gil::lab32f_pixel_t lab_pixel;
106 gil::color_convert(rgb_pixel, lab_pixel);
108 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[0]), 87.7347f);
109 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[1]), -86.1827f);
110 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[2]), 83.1793f);
113 BOOST_AUTO_TEST_CASE(RGB_to_Lab_Test4)
115 gil::rgb32f_pixel_t rgb_pixel(0.f, 0.f, 1.f);
116 gil::lab32f_pixel_t lab_pixel;
118 gil::color_convert(rgb_pixel, lab_pixel);
120 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[0]), 32.2970f);
121 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[1]), 79.1875f);
122 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[2]), -107.8602f);
125 BOOST_AUTO_TEST_CASE(RGB_to_Lab_Test5)
127 gil::rgb32f_pixel_t rgb_pixel(1.f, 1.f, 1.f);
128 gil::lab32f_pixel_t lab_pixel;
130 gil::color_convert(rgb_pixel, lab_pixel);
132 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[0]), 100.f);
133 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[1]), 0.f);
134 TEST_CHECK_CLOSE(static_cast<float>(lab_pixel[2]), 0.f);
137 BOOST_AUTO_TEST_CASE(Lab_to_RGB_Test1)
139 gil::lab32f_pixel_t lab_pixel(75.f, 20.f, 40.f);
140 gil::rgb32f_pixel_t rgb_pixel;
142 gil::color_convert(lab_pixel, rgb_pixel);
144 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[0]), 0.943240f);
145 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[1]), 0.663990f);
146 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[2]), 0.437893f);
149 BOOST_AUTO_TEST_CASE(Lab_to_RGB_Test2)
151 gil::lab32f_pixel_t lab_pixel(100.f, 0.f, 0.f);
152 gil::rgb32f_pixel_t rgb_pixel;
154 gil::color_convert(lab_pixel, rgb_pixel);
156 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[0]), 1.f);
157 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[1]), 1.f);
158 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[2]), 1.f);
161 BOOST_AUTO_TEST_CASE(Lab_to_RGB_Test3)
163 gil::lab32f_pixel_t lab_pixel(56.8140f, -42.3665f, 10.6728f);
164 gil::rgb32f_pixel_t rgb_pixel;
166 gil::color_convert(lab_pixel, rgb_pixel);
168 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[0]), 0.099999f);
169 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[1]), 0.605568f);
170 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[2]), 0.456662f);
173 BOOST_AUTO_TEST_CASE(Lab_to_RGB_Test4)
175 gil::lab32f_pixel_t lab_pixel(50.5874f, 4.0347f, 50.5456f);
176 gil::rgb32f_pixel_t rgb_pixel;
178 gil::color_convert(lab_pixel, rgb_pixel);
180 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[0]), 0.582705f);
181 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[1]), 0.454891f);
182 TEST_CHECK_CLOSE(static_cast<float>(rgb_pixel[2]), 0.1f);
185 BOOST_AUTO_TEST_SUITE_END()