Method for the positionally accurate projection of a mark onto an object, and projection apparatus
AssigneeTesto AG
InventorsPatrick Zahn, Martin Stratmann
Life of this patent
Estimating the term…
Abstract
Disclosed is a projection apparatus (1) in which a capturing and/or measuring device (2) is used for measuring a three-dimensional position and/or orientation of an object (3), a projection pose of a projector (4) is calculated from the result of said measurement, and the projector (4) is oriented in such a way that a mark (20) predefined in a 2D or 3D model (13) of the object (3) is projected in a positionally accurate manner onto the object (3).
Claims16
A method for the positionally accurate projection of a mark (20) onto an object (3), comprising the following steps:
- providing a 2-D or 3-D model (13) of the object (3) in a computer-assisted manner,
- predefining at least one mark (20) in the 2-D or 3-D model (13),
- measuring at least one of the a spatial position or orientation of the object (3),
- determining a projection pose of a projector (4) with respect to the at least one of spatial position or the orientation of the object (3) that was measured in a computer-assisted manner by comparing a measurement result of the measurement with the 2-D or 3-D model (13),
- adjusting the projector (4) based on the projection pose for positionally accurate projection of the at least one mark (20) onto the object (3), and
- projecting the at least one mark (20) onto the object (3) in a positionally accurate manner based on a calculated control.
A projection apparatus (1) comprising at least one of a recording or measuring apparatus (1) and a projector (4), the projector (4) being coupled to the at least one of the recording or measuring apparatus (2) in such a manner that a defined spatial orientation of the projector (4) is predefined or is predefinable by a spatial orientation of the at least one of the recording or measuring apparatus (2), the at least one of the recording or measuring apparatus (2) is set up to measure at least one of a spatial position or orientation of an object (3), a computing unit (5) configured to determine a projection pose of the projector (4) with respect to the at least one of the spatial position or the orientation of the object (3) that is measured in a computer-assisted manner by comparing a measurement result of the measurement with a stored 2-D or 3-D model (13) of the object (3), and the projection apparatus (1) is configured to adjust the projector (4) based on the projection pose for positionally accurate projection of at least one mark (20) in the 2-D or 3-D model (13) onto the object (3).
Dependencies are inferred from the claim text.