tutorial-image-manipulation.cpp

#include <visp/vpImage.h>

int main()
{
  try {
    vpImage<unsigned char> gray_image(240, 320);
    vpImage<vpRGBa> color_image(240, 320);

    gray_image = 128;
    vpRGBa color(255, 0, 0);
    color_image = color;

    unsigned int igray_max = gray_image.getHeight() - 1;
    unsigned int jgray_max = gray_image.getWidth() - 1;
    std::cout << "Gray  image, last pixel intensity: "
              <<  (int)gray_image[igray_max][jgray_max] << std::endl;

    unsigned int icolor_max = color_image.getHeight() - 1;
    unsigned int jcolor_max = color_image.getWidth() - 1;
    std::cout << "Color image, last pixel RGB components: "
              << (int)color_image[icolor_max][jcolor_max].R << " "
              << (int)color_image[icolor_max][jcolor_max].G << " "
              << (int)color_image[icolor_max][jcolor_max].B
              << std::endl;
  }
  catch(vpException e) {
    std::cout << "Catch an exception: " << e << std::endl;
  }
}