GEODETIC SURVEYING DEVICE HAVING AUTOMATIC HIGH-PRECISION TARGET POINT SIGHTING FUNCTIONALITY
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Abstract
A geodatic surveying device which is equipped with an automatic target point sighting functionality for determining the position of a target point. A reticle pattern that corresponds to the outer shape of the known reticle is stored, wherein a main point of the reticle pattern is predefined as indicating the target point. In order to carry out an automatic target point sighting functionality, the evaluation means are designed such that, after the function start, a camera image of the reticle is automatically recorded, the reticle pattern is aligned with the reticle in the camera image by means of image processing and, depending on a position of the main point in the camera image in the matched state of the reticle pattern, the orientation of the sighting apparatus is changed in a motorized manner such that the optical target axis OA is oriented with high precision at the target point.
48 Citations
32 Claims
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1-13. -13. (canceled)
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14. A geodetic surveying appliance for finding the position of a target which is indicated with a high level of precision in space by a known target mark with an external form designed for this purpose, comprising:
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a targeting device, wherein the targeting device can swivel in motorized fashion relative to a base of the surveying appliance in order to change the orientation thereof, and includes; an objective-lens unit which defines an optical target axis; and a camera sensor for acquiring a camera image of the sighted target mark; angle-measuring functionality for the high-precision capture of the orientation of the target axis, and evaluation means for image processing, data storage and control of the orientation of the targeting device, wherein; a target mark pattern corresponding to the external form of the known target mark is stored, wherein a main point in the target mark pattern is defined as indicating the target, and in that the evaluation means are designed to execute an automatic target sighting functionality such that the start of the function is automatically followed by performance of the following steps; a camera image of the target mark is taken; the target mark pattern is matched to the target mark in the camera image by means of image processing; and the orientation of the targeting device is changed in motorized fashion on the basis of a position of the main point in the camera image in the matched state of the target mark pattern such that the optical target axis is oriented with a high level of precision to the target. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for finding the position of a target with geodetic accuracy, which target is indicated with a high level of precision in space by a known target mark with an external form designed for this purpose, using a geodetic surveying appliance comprising:
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a targeting device, wherein the targeting device can swivel in motorized fashion relative to a base of the surveying appliance in order to change the orientation thereof and includes; an objective-lens unit which defines an optical target axis (OA); and a camera sensor for acquiring a camera image of the sighted target mark; angle-measuring functionality for the high-precision capture of the orientation of the target axis; and evaluation means for image processing, data storage and control of the orientation of the targeting device, wherein; the high-precision targeting of the target indicated by the target mark is achieved by virtue of the following steps being effected, in particular under the automatic control of the evaluation means; a camera image of the target mark is taken; a target mark pattern corresponding to the external form of the known target mark and for which a main point is defined as indicating the target is matched to, in particular made consistent with, the target mark in the taken camera image by means of image processing; and the orientation of the targeting device is changed in motorized fashion on the basis of a position of the main point in the camera image in the matched state of the target mark pattern such that the optical target axis is oriented with a high level of precision to the target. - View Dependent Claims (31, 32)
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Specification