Patent ID: 7522764
Filing Date: 2009-04-21
Classification: A61B,G01B

Abstract:
1. A method of imaging an object for dental purposes, comprising the steps of: (a) projecting using a projector a striped pattern on to the object to be imaged along an angle of projection, (b) recording the projected striped pattern as a basic image (R (c) repeating steps (a) and (b) at a number of different positions of phase relation of the striped pattern to provide a plurality of basic images, and (d) computing using a computer an image of said object from the plurality of basic images that are out-of-phase with each other (R wherein in order to suppress periodic disturbances, (d1) recording (n+2) basic images (R (d2) forming first, second and third groups of basic images (R (d3) computing using a computer a first phase related image (P (d4) averaging using a computer the first phase related image (P (d5) computing using a computer an image of the object to be imaged from the phase related image (P) having a reduced amount of noise.