Visual Servoing Platform  version 3.3.1 under development (2020-07-09)
testImageResize.cpp

Test image resize.

/****************************************************************************
*
* ViSP, open source Visual Servoing Platform software.
* Copyright (C) 2005 - 2019 by Inria. All rights reserved.
*
* This software is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* See the file LICENSE.txt at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using ViSP with software that can not be combined with the GNU
* GPL, please contact Inria about acquiring a ViSP Professional
* Edition License.
*
* See http://visp.inria.fr for more information.
*
* This software was developed at:
* Inria Rennes - Bretagne Atlantique
* Campus Universitaire de Beaulieu
* 35042 Rennes Cedex
* France
*
* If you have questions regarding the use of this file, please contact
* Inria at visp@inria.fr
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Description:
* Test image resize.
*
*****************************************************************************/
#include <visp3/core/vpConfig.h>
#if defined(VISP_HAVE_CATCH2)
#define CATCH_CONFIG_RUNNER
#include <catch.hpp>
#include <visp3/core/vpImageTools.h>
#include "common.hpp"
static unsigned int g_input_width = 7;
static unsigned int g_input_height = 5;
static unsigned int g_output_width = 4;
static unsigned int g_output_height = 3;
TEST_CASE("Nearest neighbor interpolation", "[image_resize]") {
SECTION("unsigned char")
{
vpImage<unsigned char> I(g_input_height, g_input_width);
common_tools::fill(I);
vpImage<unsigned char> Iresize_ref(g_output_height, g_output_width);
common_tools::resizeRef(I, Iresize_ref, common_tools::g_nearest_neighbor);
vpImageTools::resize(I, Iresize, g_output_width, g_output_height, vpImageTools::INTERPOLATION_NEAREST);
std::cout << "I:\n" << I << std::endl;
std::cout << "Iresize_ref:\n" << Iresize_ref << std::endl;
std::cout << "Iresize:\n" << Iresize << std::endl;
CHECK((Iresize == Iresize_ref));
}
SECTION("vpRGBa")
{
vpImage<vpRGBa> I(g_input_height, g_input_width);
common_tools::fill(I);
vpImage<vpRGBa> Iresize_ref(g_output_height, g_output_width);
common_tools::resizeRef(I, Iresize_ref, common_tools::g_nearest_neighbor);
vpImage<vpRGBa> Iresize;
vpImageTools::resize(I, Iresize, g_output_width, g_output_height, vpImageTools::INTERPOLATION_NEAREST);
std::cout << "I:\n" << I << std::endl;
std::cout << "Iresize_ref:\n" << Iresize_ref << std::endl;
std::cout << "Iresize:\n" << Iresize << std::endl;
CHECK((Iresize == Iresize_ref));
}
}
TEST_CASE("Bilinear interpolation", "[image_resize]") {
SECTION("unsigned char")
{
vpImage<unsigned char> I(g_input_height, g_input_width);
common_tools::fill(I);
vpImage<unsigned char> Iresize_ref(g_output_height, g_output_width);
common_tools::resizeRef(I, Iresize_ref, common_tools::g_bilinear);
vpImageTools::resize(I, Iresize, g_output_width, g_output_height, vpImageTools::INTERPOLATION_LINEAR);
std::cout << "I:\n" << I << std::endl;
std::cout << "Iresize_ref:\n" << Iresize_ref << std::endl;
std::cout << "Iresize:\n" << Iresize << std::endl;
CHECK((Iresize == Iresize_ref));
}
SECTION("vpRGBa")
{
vpImage<vpRGBa> I(g_input_height, g_input_width);
common_tools::fill(I);
vpImage<vpRGBa> Iresize_ref(g_output_height, g_output_width);
common_tools::resizeRef(I, Iresize_ref, common_tools::g_bilinear);
vpImage<vpRGBa> Iresize;
vpImageTools::resize(I, Iresize, g_output_width, g_output_height, vpImageTools::INTERPOLATION_LINEAR);
std::cout << "I:\n" << I << std::endl;
std::cout << "Iresize_ref:\n" << Iresize_ref << std::endl;
std::cout << "Iresize:\n" << Iresize << std::endl;
const double max_pixel_error = 0.5;
double error = 0.0;
CHECK(common_tools::almostEqual(Iresize, Iresize_ref, max_pixel_error, error));
std::cout << "Error: " << error << std::endl;
}
}
int main(int argc, char *argv[])
{
Catch::Session session; // There must be exactly one instance
// Build a new parser on top of Catch's
using namespace Catch::clara;
auto cli = session.cli() // Get Catch's composite command line parser
| Opt(g_input_width, "g_input_width") // bind variable to a new option, with a hint string
["--iw"] // the option names it will respond to
("Input image width.") // description string for the help output
| Opt(g_input_height, "g_input_height") // bind variable to a new option, with a hint string
["--ih"] // the option names it will respond to
("Input image height.")
| Opt(g_output_width, "g_output_width") // bind variable to a new option, with a hint string
["--ow"] // the option names it will respond to
("Output image width.")
| Opt(g_output_height, "g_output_height")// bind variable to a new option, with a hint string
["--oh"] // the option names it will respond to
("Output image height.");
// Now pass the new composite back to Catch so it uses that
session.cli(cli);
// Let Catch (using Clara) parse the command line
session.applyCommandLine(argc, argv);
std::cout << "Input image (wxh): " << g_input_width << "x" << g_input_height << std::endl;
std::cout << "Output image (wxh): " << g_output_width << "x" << g_output_height << std::endl;
int numFailed = session.run();
// numFailed is clamped to 255 as some unices only use the lower 8 bits.
// This clamping has already been applied, so just return it here
// You can also do any post run clean-up here
return numFailed;
}
#else
int main()
{
return 0;
}
#endif