| 摘要 |
The invention relates to a geodatic surveying device which is equipped with an automatic target point sighting functionality for determining the position of a target point. The target point is indicated with high spatial precision by a known reticle. The geodatic surveying device is fitted with a sighting apparatus which can be pivoted in a motorized manner relative to a base of the surveying device in order to change the orientation of the apparatus. The sighting apparatus is at least equipped with an objective unit (3) defining an optical target axis OA and with a camera sensor (4) for capturing a camera image of the sighted reticle. The geodatic surveying device is further equipped with an angle measuring functionality for capturing the orientation of the target axis OA and with evaluation means (50) for image processing, data storage and control of the orientation of the sighting apparatus. According to the invention, 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. |
