Foundation laser radar data registration method based on single tree position and surface information

A laser radar and data technology, applied in the direction of measuring devices, electromagnetic wave re-radiation, and utilization of re-radiation, can solve the problems of reduced probability of success, low stand density, difficult selection of control points, etc., and achieve the effect of reducing dependence

Inactive Publication Date: 2011-05-18
REMOTE SENSING APPLIED INST CHINESE ACAD OF SCI
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Problems solved by technology

Although this method is more suitable when the surface features are obvious, the stand density is low, and the understory vegetation is less; when the surface features are unknown, a single

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  • Foundation laser radar data registration method based on single tree position and surface information
  • Foundation laser radar data registration method based on single tree position and surface information
  • Foundation laser radar data registration method based on single tree position and surface information

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[0023] Hereinafter, exemplary embodiments for implementing the present invention will be described in detail with reference to the drawings.

[0024] According to the principle of data registration, there are a total of 6 parameters that need to be determined in the registration process. The present invention uses the tilt sensor to measure the attitude of the instrument along the X and Y axes of the ground-based lidar, so there are fewer parameters to be determined, that is, 4. Use the measured attitude parameters to rotate the XOY plane to the horizontal plane. For the lidar data, first use the variable-scale method to separate the ground points from the vegetation points, and then use the vertical filtering to identify the position of the individual trees, use the relative positions between the individual trees to automatically identify the individual trees with the same name, and use the same list as the control Point, you can find the three parameters, and finally determine ...

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Abstract

The invention relates to an automatic registration method between multi-station foundation laser radar data based on single tree position and surface information and is mainly applied to the three-dimensional forest scene reconstruction based on multi-station foundation laser radar data. By the automatic registration method between multi-station foundation laser radar data, in the automatic alignment process, an additive foundation laser radar posture measuring device is used, the number of registration parameters required by registration need to be determined to reduce the number of control points required by registration. Simultaneously the similarity of a triangle formed by a plurality of single trees is utilized to recognize the homonymy single trees automatically, and control points are provided for the registration. By the automatic registration method between multi-station foundation laser radar data based on single tree position and surface information, the accuracy requirements and dependence for the control points in the registration process can be reduced, and the automatic registration of the multi-station foundation laser radar data under a forest environment can be realized.

Description

technical field [0001] The present invention relates to an automatic registration method between ground-based laser radar data based on single tree position and surface information. 3D forest scene reconstruction from lidar data. Background technique [0002] Ground-based lidar data have been gradually applied to detailed measurements of individual tree structural parameters, including the location and size of individual trees (Hopkinson et al. 2004; Henning and Radtke 2006). At the stand scale, the spatial distribution of forest canopy components is mainly considered (Henning and Radtke 2006). Due to occlusion between individual trees, it is difficult to accurately describe the forest using ground-based lidar data at the stand level using single-station data. Multi-site data needs to be used, which requires registration of multi-site data. In the process of archaeology and 3D reconstruction of buildings, since the research object has clear corner points and other feature...

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Application Information

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IPC IPC(8): G01S17/88
Inventor 倪文俭过志锋孙国清黄华兵
Owner REMOTE SENSING APPLIED INST CHINESE ACAD OF SCI
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