Do we need to calibrate the camera before we use the zed2 camera to measure the coordinates of an object relative to the camera ? Extract the three-dimensional coordinates of the pixel points x, y in the point cloud, such as point3D = point _ cloud.get _ value ( x, y ), what is the position x, y in the left view or the right view ?
All the cameras are factory calibrated. You do not need to calibrate your camera unless you use it in particular conditions (i.e. underwater) or it receives a strong bump that can slightly move the lenses.
You can find insightful examples and tutorials to retrieve data on Github: GitHub - stereolabs/zed-sdk: ⚡️The spatial perception framework for rapidly building smart robots and spaces