Hands-On Robotics Programming with C++

Important functions in OpenCV

Before writing any OpenCV program, it is important to understand some of the main functions in OpenCV and the output that these functions can give us. Let's start by looking at the functions:

• imread(): The imread() function is used to read an image or a video feed from the Pi camera or webcam. Inside the imread() function, we have to provide the location of the image. If the image and program files are in the same folder, we only need to provide the name of the image. However, if the image is stored in a different folder, then we need to provide the complete path of the image inside the imread function. We store the image value from the imread() function inside a matrix (Mat) variable.

If the image and