34 lines
1.1 KiB
C++
34 lines
1.1 KiB
C++
//
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// Copyright 2019 Olzhas Zhumabek <anonymous.from.applecity@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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#ifndef BOOST_GIL_IMAGE_PROCESSING_DETAIL_MATH_HPP
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#define BOOST_GIL_IMAGE_PROCESSING_DETAIL_MATH_HPP
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#include <array>
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#include <boost/gil/image_processing/kernel.hpp>
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namespace boost { namespace gil { namespace detail {
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static constexpr double pi = 3.14159265358979323846;
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static constexpr std::array<float, 9> dx_sobel = {{-1, 0, 1, -2, 0, 2, -1, 0, 1}};
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static constexpr std::array<float, 9> dx_scharr = {{-1, 0, 1, -1, 0, 1, -1, 0, 1}};
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static constexpr std::array<float, 9> dy_sobel = {{1, 2, 1, 0, 0, 0, -1, -2, -1}};
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static constexpr std::array<float, 9> dy_scharr = {{1, 1, 1, 0, 0, 0, -1, -1, -1}};
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template <typename T, typename Allocator>
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inline auto get_identity_kernel() -> detail::kernel_2d<T, Allocator>
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{
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detail::kernel_2d<T, Allocator> kernel(1, 0, 0);
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kernel[0] = 1;
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return kernel;
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}
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}}} // namespace boost::gil::detail
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#endif
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