In addition to positioning, mapping, multi-touch and other applications, 2D laser radar can also be used for 3D modeling and environmental scanning. There must be curiosity. The image scanned by 2D lidar should be a plan view. How do you turn a 2D plan into a three-dimensional view?
There are two main ways to achieve this effect on the market today:
One is to use the current state of the laser to turn a single point into a line of light. Another way is to use a 2D lidar scan while rotating on the other axis to scan out 3D information.
The following mainly introduces the second method. Through the continuous scanning of the laser radar, the specific point cloud data of the scanning cross section of the target object in each corner state can be quickly obtained without the need of the reflecting prism, and the three-dimensional coordinates of the surface of the measured object are obtained at the same time. Efficiently perform 3D modeling and virtual reproduction of the real world.
Of course, although this method can easily modify the 2D laser radar, it can acquire the 3D data of the target surface quickly, automatically, and in real time. However, due to the need to control the axis of rotation with additional degrees of freedom, attention should be paid to the problem of control error.
2D laser radar realizes 3D modeling application. There are certain requirements for the performance of laser radar. The scanning frequency and sampling times are the core parameters of the radar. In the process of working, enough points are obtained, and the scanning is more fine into the environment. Features, better positioning navigation, space environment mapping and map construction, and achieve more sensitive touch performance in multimedia applications.
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