69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
//
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// Copyright 2019 Miral Shah <miralshah2211@gmail.com>
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//
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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#include <boost/gil.hpp>
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#include <boost/gil/extension/numeric/convolve.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <cstddef>
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namespace gil = boost::gil;
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std::uint8_t img[] =
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 255, 0, 0, 0, 255, 0, 0,
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0, 0, 0, 255, 0, 255, 0, 0, 0,
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0, 0, 0, 0, 255, 0, 0, 0, 0,
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0, 0, 0, 255, 0, 255, 0, 0, 0,
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0, 0, 255, 0, 0, 0, 255, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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std::uint8_t output[] =
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 28, 28, 28, 0, 28, 28, 28, 0,
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0, 28, 56, 56, 56, 56, 56, 28, 0,
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0, 28, 56, 85, 85, 85, 56, 28, 0,
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0, 0, 56, 85, 141, 85, 56, 0, 0,
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0, 28, 56, 85, 85, 85, 56, 28, 0,
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0, 28, 56, 56, 56, 56, 56, 28, 0,
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0, 28, 28, 28, 0, 28, 28, 28, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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void test_convolve_2d_with_normalized_mean_filter()
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{
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gil::gray8c_view_t src_view =
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gil::interleaved_view(9, 9, reinterpret_cast<const gil::gray8_pixel_t*>(img), 9);
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gil::image<gil::gray8_pixel_t> temp_img(src_view.width(), src_view.height());
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typename gil::image<gil::gray8_pixel_t>::view_t temp_view = view(temp_img);
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gil::gray8_view_t dst_view(temp_view);
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std::vector<float> v(9, 1.0f / 9.0f);
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gil::detail::kernel_2d<float> kernel(v.begin(), v.size(), 1, 1);
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gil::detail::convolve_2d(src_view, kernel, dst_view);
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gil::gray8c_view_t out_view =
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gil::interleaved_view(9, 9, reinterpret_cast<const gil::gray8_pixel_t*>(output), 9);
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BOOST_TEST(gil::equal_pixels(out_view, dst_view));
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}
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int main()
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{
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test_convolve_2d_with_normalized_mean_filter();
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return ::boost::report_errors();
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}
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