Functions and performance of typical lidar Processing Software

1. Introduction to terrasolid
The terrasolid series is the first commercial LIDAR data processing software developed based on microstation and runs on the micorstation system. Therefore, users familiar with microstation operations can use it well. It includes four important modules: terramatch, Terrascan, terramodeler, and terraphoto.
2. Introduction to features and Performance
2.1 Load
The terrasolid family of software can quickly load lidar point cloud data. It takes more than 40 seconds to load 39000000 points with sufficient memory (2 GB.
2.2 browsing
Due to the limitation of microstation, terrasoild is obviously flickering and not fast.
2.3 terramatch software module
Terramatch is a software used by terrasoild to adjust the system orientation difference in the laser point data, test the difference between the laser surface or between the laser surface and known points, and correct the laser point data. These differences are converted into the correction values of system direction, east direction, north direction, elevation, heading angle, roll and pitch.
Terramatch can be used as a laser scanner calibration tool or as a data quality correction tool.
When it is used as a laser scanner calibration tool, it will solve the problem of non-aligned between the laser scanner and the inertial measurement device. In the end, the correction values of the angle, angle, and angle are applied to all the data.
The actual project data may have an error in the data source. terramatch can correct the entire data or separately correct each route.
2.4 Terrascan software module
Terrascan is a software used by terrasolid to process lidar point data. Functions:
3D data browsing;
Custom vertex category;
Automatic/Manual classification of laser points;
Interactive identification of three-dimensional targets (such as towers );
Digital features;
Detects power lines;
Vectoring houses;
Generate the cross-section diagram of the Laser Point;
Output point category;
2.5 terramodeler software module
Terramodeler is the software used by terrasolid to establish a surface model. It can be used to establish a surface, soil layer, or a triangular surface model. The model can be generated based on the measurement data, or graphical elements and XYZ text files. Terramodeler can process unlimited surfaces in the same design file, and can edit these surfaces interactively. Functions:
Edit any independent vertex;
Move, change, and flatten all points in the fence;
Build a broken line and add elements to the model;
Use the model as the data reference for the auxiliary design;
The elements are reduced to the model surface so that the elements are close to the ground surface;
Create a three-dimensional profile;
Create a contour map;
Create a rule grid chart;
Create a slope chart;
Create a color rendering image;
Create a color rendering image and calculate the volume between two sides
2.6 terraphoto software module
Terraphoto is a software used by terrasolid to generate positive images based on aerial images. It is specially used for correcting the images generated during the flight of the lidar system, the precise surface model of laser points must be applied. The entire Rectification Process can be performed in the test area without any control points. Software correction is simple and has the following features:
No control points are required to correct images;
Accurately construct the laser point Triangle Surface Model Based on the surface, and correct the image by Pixel based on the elevation value;
Automatically smooth the chromatic aberration between the two images.