Patent ID: 7298890
Filing Date: 2007-11-20
Classification: A61B,G01B,G01C

Abstract:
1. A method of detecting the 3D shape of an object by photogrammetry, comprising the steps of: providing a plurality of photogrammetric point markers and a plurality of connecting markers on the surface of the object, each connecting marker connecting a subset of the plurality of point markers with each other, with at least two different types of point markers existing that differ from each other in their optical configuration; some of the point markers provided along a connecting marker being formed in such a way that the sequence of their optical configurations results in a predetermined code that characterizes the respective connecting marker; taking a plurality of photogrammetric images of the object from different views; performing an image processing of the images, in which first the connecting markers mutually corresponding to each other in the images are associated with one another using their respective code, and then the point markers connected with each other by the respective connecting marker are associated with one another with the aid of the connecting marker association in the images; and using the point marker association, determining the 3D shape of the object by means of a photogrammetric evaluation process.