2 // Copyright 2019 Miral Shah <miralshah2211@gmail.com>
4 // Use, modification and distribution are subject to the Boost Software License,
5 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt)
11 #include <boost/gil.hpp>
12 #include <boost/gil/extension/numeric/convolve.hpp>
14 #define BOOST_TEST_MODULE test_ext_convolve_2d
15 #include "unit_test.hpp"
17 namespace gil = boost::gil;
21 0, 0, 0, 0, 0, 0, 0, 0, 0,
22 0, 0, 0, 0, 0, 0, 0, 0, 0,
23 0, 0, 255, 0, 0, 0, 255, 0, 0,
24 0, 0, 0, 255, 0, 255, 0, 0, 0,
25 0, 0, 0, 0, 255, 0, 0, 0, 0,
26 0, 0, 0, 255, 0, 255, 0, 0, 0,
27 0, 0, 255, 0, 0, 0, 255, 0, 0,
28 0, 0, 0, 0, 0, 0, 0, 0, 0,
29 0, 0, 0, 0, 0, 0, 0, 0, 0
32 std::uint8_t output[] =
34 0, 0, 0, 0, 0, 0, 0, 0, 0,
35 0, 28, 28, 28, 0, 28, 28, 28, 0,
36 0, 28, 56, 56, 56, 56, 56, 28, 0,
37 0, 28, 56, 85, 85, 85, 56, 28, 0,
38 0, 0, 56, 85, 141, 85, 56, 0, 0,
39 0, 28, 56, 85, 85, 85, 56, 28, 0,
40 0, 28, 56, 56, 56, 56, 56, 28, 0,
41 0, 28, 28, 28, 0, 28, 28, 28, 0,
42 0, 0, 0, 0, 0, 0, 0, 0, 0
45 BOOST_AUTO_TEST_SUITE(convolve_2d)
47 BOOST_AUTO_TEST_CASE(convolve_2d_with_normalized_mean_filter)
49 gil::gray8c_view_t src_view =
50 gil::interleaved_view(9, 9, reinterpret_cast<const gil::gray8_pixel_t*>(img), 9);
52 gil::image<gil::gray8_pixel_t> temp_img(src_view.width(), src_view.height());
53 typename gil::image<gil::gray8_pixel_t>::view_t temp_view = view(temp_img);
54 gil::gray8_view_t dst_view(temp_view);
56 std::vector<float> v(9, 1.0f / 9.0f);
57 gil::detail::kernel_2d<float> kernel(v.begin(), v.size(), 1, 1);
59 gil::detail::convolve_2d(src_view, kernel, dst_view);
61 gil::gray8c_view_t out_view =
62 gil::interleaved_view(9, 9, reinterpret_cast<const gil::gray8_pixel_t*>(output), 9);
64 BOOST_TEST(gil::equal_pixels(out_view, dst_view));
67 BOOST_AUTO_TEST_SUITE_END()