mirror of
https://github.com/boostorg/gil.git
synced 2026-01-21 17:02:21 +00:00
f641190948
Improve utilities sending channels, pixels and other GIL objects to
output stream for logging of test errors.
Fix missing namespace qualification in IO tests.
Comment TARGA test case with FIXME that was accidentally
uncommented in cc64bdd1a4
69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
//
|
|
// Copyright 2019 Olzhas Zhumabek <anonymous.from.applecity@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 <boost/gil/image.hpp>
|
|
#include <boost/gil/image_processing/numeric.hpp>
|
|
#include <boost/gil/image_view.hpp>
|
|
#include <boost/gil/typedefs.hpp>
|
|
|
|
#include <boost/core/lightweight_test.hpp>
|
|
|
|
namespace gil = boost::gil;
|
|
|
|
void test_normalized_mean_generation()
|
|
{
|
|
auto kernel = gil::generate_normalized_mean(5);
|
|
for (const auto& cell: kernel)
|
|
{
|
|
const auto expected_value = static_cast<float>(1 / 25.f);
|
|
BOOST_TEST_EQ(cell, expected_value);
|
|
}
|
|
}
|
|
|
|
void test_unnormalized_mean_generation()
|
|
{
|
|
auto kernel = gil::generate_unnormalized_mean(5);
|
|
for (const auto& cell: kernel)
|
|
{
|
|
BOOST_TEST_EQ(cell, 1.0f);
|
|
}
|
|
}
|
|
|
|
void test_gaussian_kernel_generation()
|
|
{
|
|
auto kernel = boost::gil::generate_gaussian_kernel(7, 0.84089642);
|
|
const float expected_values[7][7] =
|
|
{
|
|
{0.00000067f, 0.00002292f, 0.00019117f, 0.00038771f, 0.00019117f, 0.00002292f, 0.00000067f},
|
|
{0.00002292f, 0.00078633f, 0.00655965f, 0.01330373f, 0.00655965f, 0.00078633f, 0.00002292f},
|
|
{0.00019117f, 0.00655965f, 0.05472157f, 0.11098164f, 0.05472157f, 0.00655965f, 0.00019117f},
|
|
{0.00038771f, 0.01330373f, 0.11098164f, 0.25508352f, 0.11098164f, 0.01330373f, 0.00038711f},
|
|
{0.00019117f, 0.00655965f, 0.05472157f, 0.11098164f, 0.05472157f, 0.00655965f, 0.00019117f},
|
|
{0.00002292f, 0.00078633f, 0.00655965f, 0.01330373f, 0.00655965f, 0.00078633f, 0.00002292f},
|
|
{0.00000067f, 0.00002292f, 0.00019117f, 0.00038771f, 0.00019117f, 0.00002292f, 0.00000067f}
|
|
};
|
|
|
|
for (gil::gray32f_view_t::coord_t y = 0; static_cast<std::size_t>(y) < kernel.size(); ++y)
|
|
{
|
|
for (gil::gray32f_view_t::coord_t x = 0; static_cast<std::size_t>(x) < kernel.size(); ++x)
|
|
{
|
|
auto output = kernel.at(static_cast<std::size_t>(x), static_cast<std::size_t>(y));
|
|
auto expected = expected_values[y][x];
|
|
auto percent_difference = std::ceil(std::abs(expected - output) / expected);
|
|
BOOST_TEST_LT(percent_difference, 5);
|
|
}
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test_normalized_mean_generation();
|
|
test_unnormalized_mean_generation();
|
|
test_gaussian_kernel_generation();
|
|
return boost::report_errors();
|
|
}
|