function and performance of typical LIDAR processing software __ Tools

1. Terrasolid Series Software Introduction
terrasolid series software is the first commercial LIDAR data processing software, based on MicroStation development, running on the micorstation system, so users need to be familiar with the MicroStation operation can be very good use of it. It includes: Terramatch, Terrascan, Terramodeler, Terraphoto and other four important modules.
2. Introduction to Features and performance
2.1 loading
terrasolid series software can quickly load LiDAR point cloud data, with sufficient memory support (2G), loading 39 million points only need more than 40 seconds.
2.2 Browse
terrasoild software due to limited by the MicroStation, browsing the flashing more obvious, the speed is not fast.
2.3 Terramatch software Module
terramatch is the software used by Terrasoild company to adjust the system directional difference in the laser point data, to measure the difference between the laser surface or the laser surface and the known point, and to correct the laser point data. These differences are converted into system direction, eastward, northward, elevation, pitch angle (heading), Roll angle (roll) and inclination (pitch) correction values.
terramatch can be used as a laser scanner calibration tool or as a data quality correction tool.
When used as a laser scanner calibration tool, it will solve the problem of misalignment between the laser scanner and the inertial measurement device. Finally, the deflection angle, the rolling angle and the angle of correction are applied to all the data.
The actual engineering data may have errors in the data source, the Terramatch can solve the whole data correction or make the correct for each route alone.
2.4 Terrascan software Module
terrascan is the software that terrasolid companies use to process LiDAR point data. Features are as follows:
 three-dimensional way to browse data;
 Custom point category;
 Laser Point Automatic/manual classification;
 Interactive discriminant three-dimensional target (such as: Tower);
 digital objects;
 detection power line;
 vectorization housing;
A section diagram of a laser dot generated by ;
 output point Classification;
2.5 Terramodeler software Module
terramodeler is a terrasolid company that builds surface model software that can be used to build surface, soil, or design triangular models that can be based on measured data or graphic elements and xyz text files. Terramodeler can handle different surfaces with no limits in the same design file and can edit them interactively. Features are as follows:
 edit arbitrary independent points;
The  moves, lifts, and pushes all points in the enclosure;
 constructs the fracture line, adds the element in the model;
 model is used as the data reference of auxiliary design;
 the elements to the model surface, so that the elements close to the surface;
 to establish three-dimensional section diagram;
 Create contour map;
 create a regular grid map;
 to create a slope map;
 Create color rendering graph;
 Create a color rendering graph; Calculate the volume between two faces
2.6 Terraphoto software Module
terraphoto is the Terrasolid company's software for generating positive images from aerial images, which are specifically used to correct the images produced during flight of the LIDAR system and to apply the precise surface model of the laser points. The entire corrective process can be performed without any control points in the measurement area. Software correction is simple, with the following characteristics:
 correction of the image does not require a control point;
The surface of the  base is precisely constructed with the laser point triangular model and the image is corrected by pixel according to the elevation value.
 automatically smooth the transition between two images of chromatic aberration.