Class for showing multiple opencv images.
Usage:
MultipleShower sh(320, 240);
//set 2x2 grid
sh.set_grid(2, 2);
//set vertical and horizontal padding to 10px
sh.set_padding(10, 10);
//add images to specified positions
sh.add(0, 0, saltpepper);
sh.add(0, 1, canny);
sh.add(1, 0, image - canny);
sh.add(1, 1, aswm_mod);
//show image
sh.show();
//save image to file
sh.save("result.png");