Motion blur compensation

A method for compensating for motion blur when performing a 3D scanning of at least a part of an object by means of a 3D scanner, where the motion blur occurs because the scanner and the object are moved relative to each other while the scanning is performed, and where the motion blur compensation comprises:

• acquiring a sequence of focus plane images along an optical axis while moving a plane of focus along the optical axis such that each of the focus plane images is focused on a respective plane of focus, wherein only portions of the object in the respective focus plane are in focus in each of the focus plane images;
• generating a 3D surface image from using the in-focus regions of each focus plane image together with data identifying the respective focus plane data;
• determining whether there is a relative motion between the scanner and the object during the acquisition of a sequence of focus plane images so that each image in the sequence acquires data from a different portion of the object;
• if a relative motion is determined, performing a motion compensation based on the determined motion to align the focus plane images with the part of the object.