Device and method for calibrating a light projector

Abstract

A device and a method for calibrating a light projector () with adaptable luminous elements () arranged in an image plane (), comprising a camera () and a control unit () connected to the light projector () and the camera (), wherein the light projector () is configured to project in temporal succession at least two test images (') with at least two comparison structures (′) from the image plane () to an arbitrarily extending projection surface (), the camera () is a depth camera configured to record at least two camera images of a recording surface () in a manner substantially synchronized temporally with the light projector (), and to detect the three-dimensional position data of the comparison structures (′) in the camera images, and the control unit () is configured to determine the position and orientation of the light projector (), and to calculate the translational displacement and rotational twist between camera () and projector ().