监听键盘输入事件

int key = waitKey(100);

按ESC 按键 退出

int key = waitKey(100);
		if (key==27) {
			break;
		}

输入1 灰色图像

std::cout << "your enter key # 1" << std::endl;
cvtColor(image,dst,COLOR_BGR2GRAY);

输入2 HSV图像

std::cout << "your enter key # 2" << std::endl;
cvtColor(image, dst,COLOR_BGR2HSV);

输入3图像通道+50

dst = Scalar(50,50,50);
add(image,dst,dst);

主代码如下：

Mat dst = Mat::zeros(image.size(),image.type());

	while (true)
	{
		int key = waitKey(100);
		if (key==27) {
			break;
		}
		if (key==49) 
		{
			std::cout << "your enter key # 1" << std::endl;
			cvtColor(image,dst,COLOR_BGR2GRAY);
		}
		if (key == 50)
		{
			std::cout << "your enter key # 2" << std::endl;
			cvtColor(image, dst,COLOR_BGR2HSV);
		}
		if (key == 51)
		{
			std::cout << "your enter key # 3" << std::endl;
			dst = Scalar(50,50,50);
			add(image,dst,dst);
		}
		imshow("键盘响应",dst);
	}