Method for determining the 3D coordinates of the surface of an object
First Claim
1. A method for determining the 3D coordinates of the surface of an object, comprising the steps of:
- measuring the 3D coordinates of a partial surface (5,6) of the object (1) by a 3D measuring device (3);
measuring the position and orientation of said 3D measuring device by a tracking system (2), wherein said determination is effected by at least one detector placed on said 3D measuring device for detection by said tracking system (2);
determining the 3D coordinates of an adjacent partial surface (7) of the object (1) by the 3D measuring device;
performing a matching method to determine and minimize an error function of a detector (4) of the 3D measuring device and/or tracking system for certain of said 3D coordinates measured at said steps (a) and (c) that fall into a overlap region between said partial surface (5, 6) and said adjacent partial surface (7);
wherein said matching method minimizes the different measured distances of said certain 3D coordinates of points in said overlap region.
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Abstract
A method serves to determine the 3D coordinates of an object. The 3D coordinates of a partial surface (6) of the object are determined by a 3D measuring device (3), which includes one or more detectors (4) and whose position is determined by a tracking system. The 3D coordinates of an adjacent partial surface (7) of the object are determined by the 3D measuring device (3). The 3D coordinates of an overlap region of he adjacent partial surfaces (6,7) are put together by a matching method. In doing so, an error function is determined and minimized iteratively. Furthermore, the error function of a detector (4) of the 3D measuring device (3) is determined.
10 Citations
21 Claims
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1. A method for determining the 3D coordinates of the surface of an object, comprising the steps of:
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measuring the 3D coordinates of a partial surface (5,6) of the object (1) by a 3D measuring device (3); measuring the position and orientation of said 3D measuring device by a tracking system (2), wherein said determination is effected by at least one detector placed on said 3D measuring device for detection by said tracking system (2); determining the 3D coordinates of an adjacent partial surface (7) of the object (1) by the 3D measuring device; performing a matching method to determine and minimize an error function of a detector (4) of the 3D measuring device and/or tracking system for certain of said 3D coordinates measured at said steps (a) and (c) that fall into a overlap region between said partial surface (5, 6) and said adjacent partial surface (7); wherein said matching method minimizes the different measured distances of said certain 3D coordinates of points in said overlap region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification