opencv打开双目

#include <iostream>
#include <sstream>
#include <time.h>
#include <stdio.h>

#include <opencv2/opencv.hpp>
#define ESC_KEY 27

#ifndef _CRT_SECURE_NO_WARNINGS
# define _CRT_SECURE_NO_WARNINGS
#endif

using namespace cv;
using namespace std;
//SavePicture(frameL, picDir, picLeft, num);
void SavePicture(Mat view, string dir, string name, int num)
{
	string str_file = dir + "/" + name + to_string(num) + ".jpg";
	imwrite(str_file, view);

}


int main17060700()
{
	VideoCapture cameraL;
	VideoCapture cameraR;

	cameraL.open(1);
	cameraR.open(0);

	//判断相机是否打开
	while (!cameraL.isOpened())
	{		
		cout << "cannot cameraL" << endl;
	}
	while (!cameraR.isOpened())
	{
		cout << "cannot cameraR" << endl;
	}


	int viewWidth = 640;
	int viewHeight = 480;
	cameraL.set(CV_CAP_PROP_FRAME_WIDTH, viewWidth);
	cameraL.set(CV_CAP_PROP_FRAME_HEIGHT, viewHeight);
	cameraR.set(CV_CAP_PROP_FRAME_WIDTH, viewWidth);
	cameraR.set(CV_CAP_PROP_FRAME_HEIGHT, viewHeight);
	
	Mat frameL, frameR;
	int num = 1;
	clock_t prevTimestamp = 0;
	int delay = 5000;

	string picDir = "Ca_Pic"; //在根目录下建一个这个名字的文件夹
	string picLeft = "left";
	string picRight = "right";

	while (true)
	{
		bool a = false;

		Mat frameL1, frameR1;
		bool blinkOutput = false;
		cameraL >> frameL;
		cameraR >> frameR;

		if (frameL.empty() && frameR.empty())
		{
			break;
		}
		if (cameraR.isOpened() && cameraL.isOpened() )
		{
			char key = waitKey(10);
			if (key == 'g' || key == 'G' || key == 32 || key == ' ')
			{
				SavePicture(frameL, picDir, picLeft, num);
				SavePicture(frameR, picDir, picRight, num);
				//bitwise_not(frameL, frameL);
				//bitwise_not(frameR, frameR);
				num++;		
			}	
			putText(frameL, to_string(num - 1), Point(20, 20), 1, 1, Scalar(0, 0, 255));
			putText(frameR, to_string(num - 1), Point(20, 20), 1, 1, Scalar(0, 0, 255));
			cv::imshow("Left", frameL);
			cv::imshow("Right", frameR);

			if (key == ESC_KEY )
				break;
		}
		if (num == 26)
		{
			cout << "捕获完成" << endl;
			break;
		}
	}
	return 0;
}