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1 | // |
2 | // Copyright 2019 Olzhas Zhumabek <anonymous.from.applecity@gmail.com> | |
3 | // | |
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) | |
7 | // | |
8 | #ifndef BOOST_GIL_IMAGE_PROCESSING_DETAIL_MATH_HPP | |
9 | #define BOOST_GIL_IMAGE_PROCESSING_DETAIL_MATH_HPP | |
10 | ||
11 | #include <array> | |
12 | #include <boost/gil/extension/numeric/kernel.hpp> | |
13 | ||
f67539c2 | 14 | namespace boost { namespace gil { namespace detail { |
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15 | |
16 | static constexpr double pi = 3.14159265358979323846; | |
17 | ||
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18 | static constexpr std::array<float, 9> dx_sobel = {{-1, 0, 1, -2, 0, 2, -1, 0, 1}}; |
19 | static constexpr std::array<float, 9> dx_scharr = {{-1, 0, 1, -1, 0, 1, -1, 0, 1}}; | |
20 | static constexpr std::array<float, 9> dy_sobel = {{1, 2, 1, 0, 0, 0, -1, -2, -1}}; | |
21 | static constexpr std::array<float, 9> dy_scharr = {{1, 1, 1, 0, 0, 0, -1, -1, -1}}; | |
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22 | |
23 | template <typename T, typename Allocator> | |
24 | inline detail::kernel_2d<T, Allocator> get_identity_kernel() | |
25 | { | |
26 | detail::kernel_2d<T, Allocator> kernel(1, 0, 0); | |
27 | kernel[0] = 1; | |
28 | return kernel; | |
29 | } | |
30 | ||
f67539c2 | 31 | }}} // namespace boost::gil::detail |
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32 | |
33 | #endif |