The 3D laser scanner has been successfully applied in the fields of cultural relics protection, urban building survey, topographic mapping, mining, deformation monitoring, factories, large-scale structures, pipeline design, aircraft and shipbuilding, highway and railroad construction, tunneling, and bridge reconstruction.
Three-dimensional laser scanner, the scanning results are directly displayed as a point cloud (pointcloud meaning countless points to measure the rules of the computer to present the results of the object), the use of three-dimensional laser scanning technology to obtain the spatial point cloud data, you can quickly set up the structure of the complex, irregular scene of the three-dimensional visualization model, both time and effort, the ability to the current three-dimensional modeling software incomparable. This ability is incomparable to the current 3D modeling software.
Expanded Information
The classification of 3D laser scanners:?
Three-dimensional laser scanners can be classified according to the different scanning platforms: airborne (or star) laser scanning systems, terrestrial laser scanning systems, portable laser scanning systems.
Three-dimensional laser scanner as today's most current three-dimensional data acquisition tools can be divided into different types. Typically categorized according to the effective scanning distance of the 3D laser scanner, they can be divided into:?
(1) short-range laser scanner: its longest scanning distance does not exceed 3m, generally the best scanning distance of 0.6 ~ 1.2m, usually this type of scanner is suitable for small mold measurement, not only fast scanning speed and high precision, can be up to three hundred thousand points of accuracy to ± 0.018mm.
For example, the Minolta company produced the VIVID 910 High-precision three-dimensional laser scanner, handheld three-dimensional data scanner FastScan, etc., all belong to this type of scanner.
(2) in the distance laser scanner: the longest scanning distance of less than 120 m three-dimensional laser scanner belongs to the middle distance three-dimensional laser scanner, which is mostly used for large molds or indoor space measurement. For example, the ScanStation P30/P40 3D laser scanner from Leica Switzerland belongs to this type of scanner.
(3) Long-range laser scanners: 3D laser scanners with a scanning distance of more than 270 meters belong to the long-range 3D laser scanners, which are mainly used for the measurement of buildings, mines, dams, large civil engineering projects, etc. For example, the ScanStation P30/P40 from Leica, Switzerland, belongs to this category. For example, the ScanStation P30/P40 three-dimensional laser scanner produced by the Swiss company Leica belongs to this type of scanner.
(4) ultra-long-range laser scanner: the longest scanning distance is usually greater than 1 kilometer, and need to be equipped with accurate navigation and positioning system, which can be used for a wide range of terrain scanning and measurement. For example, the ScanStation P50 3D laser scanner from the Swiss company Leica belongs to this type of scanner.
The reason for this categorization is that the effective distance of the laser measurement is an important condition for the range of applications of a 3D laser scanner, especially for the observation of large features or scenes, or inaccessible features, etc., which have to be taken into account in the scanner's actual measuring distance.
In addition, the farther away the object is, the less accurate the observation of the object will be. Therefore, to ensure the accuracy of the scanning data, it must be used within the standard range specified by the corresponding type of scanner.
Baidu Encyclopedia - 3D Laser Scanner