Hands-On Robotics Programming with C++

The OpenCV camera feed program

We will now write a simple C++ program to view the camera feed from the Pi camera. The program for viewing the video is as follows. The program is named Camerafeed.cpp and you can download it from the Chaper07 folder of the GitHub repository:

int main(){ Mat videoframe; VideoCapture vid(0); if (!vid.isOpened()) {cout<<"Error opening camera"<<endl; return -1; } for(;;) { vid.read(videoframe); imshow("Frame", videoframe); if (waitKey(1) > 0) break; } return 0;}

The OpenCV libraries and namespace declaration is similar to that of the previous program:

1. First, inside the main function, we are declaring a matrix variable called videoframe.
2. Next, the VideoCapture datatype is used to capture a video feed from the Pi ...