Method and device for determining the 3d profile of an object
AssigneeSteinbichler Optotechnik GmbH
InventorsArmin Maidhof, Peter Andra, Manfred Adlhart, Michael Kaus, Markus Basel, Frank Thoss, Markus Lazar, Thomas Nasswetter, Hans Steinbichler
Life of this patent
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Abstract
The invention relates to a method for determining the 3D profile of an object. In order to improve a method of this type, several sections of the object (5) are measured. During at least one measuring operation, at least one reference object (4) is measured. The measured sections of the object (5) are combined (1).
Claims25
A method for determining the 3D shape of an object,
- wherein several regions of the object (5) are measured,
- wherein at least one reference object (4) is measured during at least one measurement,
- and wherein the measured regions of the object (5) are linked with one another.
The method according to one of the preceding claims, characterized by the fact that the reference object(s) (4) is/are arranged on a reference body (3) that can be connected to the object (5) by a mounting device.
The method according to one of the preceding claims, characterized by the fact that the reference object(s) is/are geometrically regular or irregular.
The method according to one of the preceding claims, characterized by the fact that the reference object(s) can be mathematical-geometrically described, and by the fact that its/their geometric parameters, e.g., position, center point coordinate, radius, curvature and/or spacing and/or the like, are used.
The method according to one of the preceding claims, characterized by the fact that parts of the object or the object surface and/or the reference object(s) is/are used for calibrating the measuring system during or after the matching process.
The method according to one of the preceding claims, characterized by the fact that parts of the object or the object surface and/or the reference object(s) is/are used for calibrating one or more mechanical motion systems for the object during or after the matching process.
The method according to one of the preceding claims, characterized by the fact that a definitive code allocation (coding/label) of the reference objects used is carried out during or after the matching process.
The method according to one of the preceding claims, characterized by the fact that the reference object(s) is/are, when using optical measuring systems, realized by means of optical structure projection, e.g., circular markings, lines, grids or the like.
The method according to one of the preceding claims, characterized by the fact that the reference object(s) is/are present in the form of mathematical, virtual or synthetic models or a corresponding data set and used for the matching process.
The method according to one of the preceding claims, characterized by the fact that additional measuring data of the measuring system obtained from the object and/or the reference object(s) is/are used during the matching process.
The method according to one of the preceding claims, characterized by the fact that parts of the object and/or the reference object(s) is/are used for determining geometric parameters of the object during or after the matching process.
The method according to one of the preceding claims, characterized by the fact that the measuring results are checked, wherein the reference object(s) preferably is/are used as the calibration body.
A device for determining the 3D shape of an object (5), comprising
- a 3D coordinate measuring device (3D-KMG),
- at least one reference object (4)
- and a computer for linking the measured regions of the object (5).
Dependencies are inferred from the claim text.