A three-dimensional laser scanning control frame and its field scanning and point cloud registration method
A three-dimensional laser and scanning control technology, applied in the direction of using optical devices, image data processing, measuring devices, etc., can solve the problems of affecting modeling work, unsatisfactory connection of point clouds at the beginning and end, and low registration accuracy, etc. Improve field collection efficiency and point cloud registration accuracy, and facilitate disassembly and assembly.
Inactive Publication Date: 2016-01-13
南京明水测绘工程有限公司
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Problems solved by technology
Although the above method can stitch all the station clouds, the registration accuracy is not high, especially in the case of a large number of stations, the connection of the first and last point clouds is not ideal, which affects the subsequent modeling work
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Embodiment 1
[0025] Embodiment 1: as figure 1 and 2 As shown, a three-dimensional laser scanning control frame includes a loading platform, a bracket and a target system;
[0026] The loading platform is a steel plate platform 1 with a specific size of 49cm×72cm and a thickness of 3mm. Four movable wheels 3 are provided at the four corners of the bottom surface to facilitate its rotation in any direction; the upper surface of the loading platform is pasted with a non-slip layer , the scanning target object can be placed on the platform and move synchronously with the control frame without displacement.
[0027] Described support is that stainless steel support 5 comprises two long supports and two short supports, and the length of two long supports is 0.5m, is respectively vertically fixed on two angles relative to the upper surface of the loading platform; the length of two short supports is 0.1m, respectively vertically fixed on the other two opposite corners of the upper surface of th...
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The invention discloses a three-dimensional laser scanning control rack and a field operation scanning and point cloud registration method for the same. The control rack comprises a carrying platform, a support and a target system. A scanning object can be carried to rotate circularly, the target system is fixed onto the support and can rotate circularly, the heights of targets are flexible and adjustable, and the targets are universally applicable to objects with different heights. Error distribution when coordinate systems of various stations rotate is considered in the point cloud registration method, the condition of poor head and tail point cloud connection of the traditional method is improved, and the field operation scanning and point cloud registration method is favorable for three-dimensional modeling operation. The three-dimensional laser scanning control rack and the field operation scanning and point cloud registration method have the advantages that the three-dimensional laser scanning control rack is convenient to assemble and disassemble and excellent in portability, excellent effects for improving field operation acquisition efficiency and point cloud registration precision of small targets are realized, and the three-dimensional laser scanning control rack and the field operation scanning and point cloud registration method are favorable for saving field operation time and point cloud data post-processing.
Description
technical field [0001] The invention relates to a three-dimensional laser scanning auxiliary acquisition device and its field scanning and point cloud data processing method, in particular to a control frame for improving small target scanning efficiency and point cloud registration accuracy and its field scanning and point cloud data processing method. Cloud registration method. Background technique [0002] The protection of cultural relics, industrial modeling, and statue making are among the fields that first applied 3D laser scanning measurement technology. The scanning target usually has the characteristics of small shape (less than 1m), strong three-dimensional effect, and complex shape. It usually takes several directions to obtain complete 3D scanning data. After scanning a station, the scanner needs to be moved to other stations in turn. Scanning, on-site workload is heavy. However, the point cloud data obtained by each scan can only cover a part of the object su...
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IPC IPC(8): G01B11/24G06T7/00
Inventor 黄腾陈建华杨晨沈月千
Owner 南京明水测绘工程有限公司