perfGaussianFilter.cpp

/*
 * ViSP, open source Visual Servoing Platform software.
 * Copyright (C) 2005 - 2025 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 https://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:
 * Benchmark Gaussian filter.
 */

 
#include <visp3/core/vpConfig.h>
 
#if defined(VISP_HAVE_SIMDLIB) && defined(VISP_HAVE_CATCH2)
 
#include <catch_amalgamated.hpp>
 
#include <visp3/core/vpGaussianFilter.h>
#include <visp3/core/vpImageFilter.h>
#include <visp3/core/vpIoTools.h>
#include <visp3/io/vpImageIo.h>
 
#if defined(VISP_HAVE_OPENCV) && defined(HAVE_OPENCV_IMGCODECS) && defined(HAVE_OPENCV_IMGPROC)
#include <opencv2/imgcodecs.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#endif
 
#ifdef ENABLE_VISP_NAMESPACE
using namespace VISP_NAMESPACE_NAME;
#endif
VP_ATTRIBUTE_NO_DESTROY static const std::string ipath = vpIoTools::getViSPImagesDataPath();
VP_ATTRIBUTE_NO_DESTROY static std::string imagePath = vpIoTools::createFilePath(ipath, "faces/1280px-Solvay_conference_1927.png");
 
TEST_CASE("vpGaussianFilter", "[benchmark]")
{
  SECTION("unsigned char")
  {
    vpImage<unsigned char> I, I_blur;
    vpImageIo::read(I, imagePath);
 
    const float sigma = 5.0f;
    vpGaussianFilter gaussianFilter(I.getWidth(), I.getHeight(), sigma);
    BENCHMARK("Benchmark vpGaussianFilter uchar")
    {
      gaussianFilter.apply(I, I_blur);
      return I_blur;
    };
  }
 
  SECTION("vpRGBa")
  {
    vpImage<vpRGBa> I, I_blur;
    vpImageIo::read(I, imagePath);
 
    const float sigma = 5.0f;
    vpGaussianFilter gaussianFilter(I.getWidth(), I.getHeight(), sigma);
    BENCHMARK("Benchmark vpGaussianFilter vpRGBa")
    {
      gaussianFilter.apply(I, I_blur);
      return I_blur;
    };
  }
 
  SECTION("vpRGBa + deinterleave")
  {
    vpImage<vpRGBa> I, I_blur;
    vpImageIo::read(I, imagePath);
 
    const float sigma = 5.0f;
    const bool deinterleave = true;
    vpGaussianFilter gaussianFilter(I.getWidth(), I.getHeight(), sigma, deinterleave);
    BENCHMARK("Benchmark vpGaussianFilter vpRGBa")
    {
      gaussianFilter.apply(I, I_blur);
      return I_blur;
    };
  }
}
 
TEST_CASE("vpImageFilter::gaussianBlur", "[benchmark]")
{
  SECTION("unsigned char")
  {
    vpImage<unsigned char> I;
    vpImageIo::read(I, imagePath);
 
    vpImage<double> I_blur;
    const unsigned int kernelSize = 7;
    const double sigma = 5.0;
    BENCHMARK("Benchmark vpImageFilter::gaussianBlur uchar")
    {
      vpImageFilter::gaussianBlur(I, I_blur, kernelSize, sigma);
      return I_blur;
    };
  }
 
  SECTION("vpRGBa")
  {
    vpImage<vpRGBa> I, I_blur;
    vpImageIo::read(I, imagePath);
 
    const unsigned int kernelSize = 7;
    const double sigma = 5.0;
    BENCHMARK("Benchmark vpImageFilter::gaussianBlur vpRGBa")
    {
      vpImageFilter::gaussianBlur(I, I_blur, kernelSize, sigma);
      return I_blur;
    };
  }
}
 
#if defined(VISP_HAVE_OPENCV) && defined(HAVE_OPENCV_IMGCODECS) && defined(HAVE_OPENCV_IMGPROC)
 
TEST_CASE("Gaussian filter (OpenCV)", "[benchmark]")
{
  SECTION("unsigned char")
  {
    cv::Mat img, img_blur;
    img = cv::imread(imagePath, cv::IMREAD_GRAYSCALE);
 
    const double sigma = 5.0;
    BENCHMARK("Benchmark Gaussian filter uchar (OpenCV)")
    {
      cv::GaussianBlur(img, img_blur, cv::Size(), sigma);
      return img_blur;
    };
  }
 
  SECTION("BGR")
  {
    cv::Mat img, img_blur;
    img = cv::imread(imagePath, cv::IMREAD_COLOR);
 
    const double sigma = 5.0;
    BENCHMARK("Benchmark Gaussian filter BGR (OpenCV)")
    {
      cv::GaussianBlur(img, img_blur, cv::Size(), sigma);
      return img_blur;
    };
  }
}
#endif
 
int main(int argc, char *argv[])
{
  Catch::Session session;
 
  bool runBenchmark = false;
  auto cli = session.cli()
    | Catch::Clara::Opt(runBenchmark)["--benchmark"]("run benchmark?");
 
  session.cli(cli);
 
  session.applyCommandLine(argc, argv);
 
  if (runBenchmark) {
    int numFailed = session.run();
 
    return numFailed;
  }
 
  return EXIT_SUCCESS;
}
#else
#include <iostream>
 
int main() { return EXIT_SUCCESS; }
#endif