How to find the real size of an object?

Question

Mathematics

Subject. There is Kinect v2. I know the distance from the camera to the object, and its coordinates on the image 1920:1080, in which the kinect color sensor shoots. Actually, how can I get its real dimensions?

Answer 1

and google?
stackoverflow.com/questions/9661488/finding-the-ac...
stackoverflow.com/questions/7040767/kinect-object-...