3 3 METHOD AND DEVICE FOR OPTICAL SCANNING OF THREE-DIMENSIONAL OBJECTS BY MEANS OF A DENTAL 3 CAMERA USING A TRIANGULATION METHOD

摘要

The present invention relates to a method and apparatus for visually scanning a three-dimensional object by means of a dental 3D camera using a triangulation method, wherein the 3D data set (10) Is determined from a plurality of images (30), and the image forms a scanning sequence. The pattern 3 has a brightness distribution for the periodic phase positions 40,41, 42,43, 44. In the present invention, two or more images 30 of the pattern 3 projected on the object 2 are recorded for the purpose of determining the camera shake of the 3D camera 1, and one or more of these images 30 Form part of the scanning sequence. (45, 46, 47) by subtraction and division of two or more individual images (30) by a camera tremble analysis unit (4) for determining camera shake of the portable 3D camera (1) And the camera trembling index 50 is calculated from these one or more comparison signals 45, 46, 47. Alternatively, the camera shake can be visualized by the camera-shake analysis unit 4 by the high-resolution image 12 produced from the two or more comparison signals 45, 46, 47.