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- //
- // Copyright 2019 Miral Shah <miralshah2211@gmail.com>
- //
- // Use, modification and distribution are subject to the Boost Software License,
- // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- //
- #include <cstddef>
- #include <boost/gil.hpp>
- #include <boost/gil/extension/numeric/convolve.hpp>
- #define BOOST_TEST_MODULE test_ext_convolve_2d
- #include "unit_test.hpp"
- namespace gil = boost::gil;
- std::uint8_t img[] =
- {
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 255, 0, 0, 0, 255, 0, 0,
- 0, 0, 0, 255, 0, 255, 0, 0, 0,
- 0, 0, 0, 0, 255, 0, 0, 0, 0,
- 0, 0, 0, 255, 0, 255, 0, 0, 0,
- 0, 0, 255, 0, 0, 0, 255, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0
- };
- std::uint8_t output[] =
- {
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 28, 28, 28, 0, 28, 28, 28, 0,
- 0, 28, 56, 56, 56, 56, 56, 28, 0,
- 0, 28, 56, 85, 85, 85, 56, 28, 0,
- 0, 0, 56, 85, 141, 85, 56, 0, 0,
- 0, 28, 56, 85, 85, 85, 56, 28, 0,
- 0, 28, 56, 56, 56, 56, 56, 28, 0,
- 0, 28, 28, 28, 0, 28, 28, 28, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0
- };
- BOOST_AUTO_TEST_SUITE(convolve_2d)
- BOOST_AUTO_TEST_CASE(convolve_2d_with_normalized_mean_filter)
- {
- gil::gray8c_view_t src_view =
- gil::interleaved_view(9, 9, reinterpret_cast<const gil::gray8_pixel_t*>(img), 9);
- gil::image<gil::gray8_pixel_t> temp_img(src_view.width(), src_view.height());
- typename gil::image<gil::gray8_pixel_t>::view_t temp_view = view(temp_img);
- gil::gray8_view_t dst_view(temp_view);
- std::vector<float> v(9, 1.0f / 9.0f);
- gil::detail::kernel_2d<float> kernel(v.begin(), v.size(), 1, 1);
- gil::detail::convolve_2d(src_view, kernel, dst_view);
- gil::gray8c_view_t out_view =
- gil::interleaved_view(9, 9, reinterpret_cast<const gil::gray8_pixel_t*>(output), 9);
- BOOST_TEST(gil::equal_pixels(out_view, dst_view));
- }
- BOOST_AUTO_TEST_SUITE_END()
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