学习OpenCV3

//Example 2-1. A simple OpenCV program that loads an image from disk and displays it
//on the screen
#include 

void help（char** argv ） {
	std::cout << “
“
	<< “A simple OpenCV program that loads and displays an image from disk
“
	<< argv[0] <<“ 
“
	<< “For example:
“
	<< argv[0] << “ ../fruits.jpg
“
	<< std::endl;
}
	

int main（ int argc char** argv ） {
	
	if （argc != 2） {
		help（argv）;
		return 0;
	}
		

  cv::Mat img = cv::imread（ argv[1] -1 ）;

  if（ img.empty（） ） return -1;

  cv::namedWindow（ “Example 2-1“ cv::WINDOW_AUTOSIZE ）;
  cv::imshow（ “Example 2-1“ img ）;
  cv::waitKey（ 0 ）;
  cv::destroyWindow（ “Example 2-1“ ）;

  return 0;
}

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