openglcv.cpp

#include <opencv/cv.h>
#include <opencv/highgui.h>
#include <glut.h>

static void display(void)
{
  cv::Mat img = cv::imread("test.jpg");
  cv::flip(img, img, 0);
  cv::cvtColor(img, img, CV_BGR2RGB);

  glClear(GL_COLOR_BUFFER_BIT);
  glDrawPixels(img.cols, img.rows,
               GL_RGB, GL_UNSIGNED_BYTE, img.data);
  glFlush();
}

static void keyboard(unsigned char key, int x, int y)
{
  switch(key) {
  case 'q':
  case 'Q':
  case '\033':
    exit(1);
  default:
    break;
  }
}

int main(int argc, char *argv[])
{
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_RGBA);
  glutInitWindowSize(640, 640);
  glutCreateWindow("TEST");

  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  gluOrtho2D(0.0, 640, 640, 0.0);
  glViewport(0, 0, 640, 640);

  glutDisplayFunc(display);
  glutKeyboardFunc(keyboard);

  glutMainLoop();
  
  return 0;
}