GEODETIC REFERENCING OF POINT CLOUDS
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Abstract
A geodetic surveying method includes deriving surface information for an object and geodetically accurate individual point measuring to at least one reference point. A position reference to an external coordinate system may also be provided by the at least one reference point. The method may also include aligning measurement radiation on the at least one reference point. The method may also include determining at least one direction to the reference point in an internal coordinate system. A method for reference point-independent scanning is also disclosed for deriving the surface information, the method may comprise scanning by continuously changing the alignment of the measurement radiation, determining a respective distance and a respective alignment of the measurement radiation emitted for a distance measurement for scanning points lying within the specified scanning region, and producing a point cloud representing the surface information and having the scanning points, in the internal coordinate system.
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Citations
35 Claims
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1-15. -15. (canceled)
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16. A geodetic surveying method for referencing a coordinate system of a geodetic surveying device, the method comprising:
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deriving surface information for an object in respect to an internal coordinate system of the geodetic surveying device; and geodetically accurate individual point measuring to at least one reference point, wherein a position reference to an external coordinate system is provided by the at least one reference point, measurement radiation is aligned precisely on the at least one reference point and at least one direction to the reference point is determined in the internal coordinate system when the measurement radiation is aligned on the at least one reference point, wherein reference point-independent scanning for deriving the surface information comprises; scanning of a scanning region, specified in respect of the object, by continuously changing the alignment of the measurement radiation; determining a respective distance and a respective alignment of the measurement radiation emitted for a distance measurement for scanning points lying within the specified scanning region, in particular with a predetermined scanning point resolution; and producing a point cloud, representing the surface information and having the scanning points, in the internal coordinate system and wherein referencing of the internal coordinate system in relation to the external coordinate system is made on the basis of at least; the position reference to the external coordinate system provided by the reference point, and the specified direction to the reference point in the internal coordinate system, so that at least one orientation of the point cloud is determined in the external coordinate system. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 35)
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31. A geodetic surveying device, comprising
a base defining a pivot axis; -
a structure which is arranged on the base and can pivot relative to the base about the pivot axis, wherein the structure defines a tilt axis which is substantially orthogonal to the pivot axis; a sighting unit arranged such that it can pivot relative to the structure about the tilt axis and has an emission unit with a beam source for generating and emitting measurement radiation; a distance measuring functionality for measuring distances to points; an angle measuring functionality for measuring an alignment of the measurement radiation; a control and processing unit for data processing and for controlling the surveying device; and an individual point measuring functionality, wherein the individual point measuring functionality can be carried out by the control and processing unit in such a way that; at least one reference point can be surveyed in a geodetically accurate fashion by aligning the measurement radiation in a highly precise fashion therewith, wherein a position reference to an external coordinate system is provided by the at least one reference point, and at least one direction to the reference point can be determined in an internal coordinate system of the surveying device when aligning the measurement radiation on the at least one reference point, wherein the geodetic surveying device comprises; a reference point-independent scanning functionality, wherein the scanning functionality can be carried out by the control and processing unit in such a way that the scanning points can be surveyed with a predetermined scanning point resolution by continuously changing the alignment of the measurement radiation on scanning points lying within a specified scanning region, and a point cloud with the scanning points can be produced in the internal coordinate system of the surveying device; and a referencing functionality, wherein there is, when the latter is carried out by the control and processing unit, referencing of the internal coordinate system in relation to the external coordinate system on the basis of at least; the position reference to the external coordinate system provided by the reference point and the direction to the reference point in the internal coordinate system, which can be determined by the individual point measuring functionality, such that at least one orientation of the point cloud is determined in the external coordinate system. - View Dependent Claims (32, 33, 34)
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Specification