"眼睛成长记"（四）---看我所想

#include <opencv2/core.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgproc.hpp>
#include <iostream>
using namespace cv;
using namespace std;
int main(int argc, char *argv[])
{
 VideoCapture cam(0);
 if (!cam.isOpened()) {
 cout << " cam open failed " << endl;
 getchar();
 return -1;
 }
 cout << " cam open success. " << endl;
 int fps = cam.get(CAP_PROP_FPS);
 int width = cam.get(CAP_PROP_FRAME_WIDTH);
 int height = cam.get(CAP_PROP_FRAME_HEIGHT);
 int brightness = cam.get(CAP_PROP_BRIGHTNESS);
 int contrast = cam.get(CAP_PROP_CONTRAST);
 int saturation = cam.get(CAP_PROP_SATURATION);
 cout << "fps: " << fps << endl;
 cout << "width: " << width << endl;
 cout << "height" << height << endl;
 cout << "brightness" << brightness << endl;
 cout << "contrast" << contrast << endl;
 cout << "saturation" << saturation << endl;
 return 0;
}