GB/T 36100-2018Indices and computation method of quality assessment for airborne LiDAR point cloud data (English PDF)
机载激光雷达点云数据质量评价指标及计算方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
March 15, 2018
Implementation date
July 1, 2018
Scope
GB/T 36100-2018 is the English-translated version of 机载激光雷达点云数据质量评价指标及计算方法.
GB/T 36100-2018 defines the indices used to assess the quality of point cloud data captured by airborne LiDAR and how each one is calculated. The indices cover point cloud density, elevation accuracy, plane accuracy, the outlier rate and intensity quality.
For elevation it gives the maximum error, the mean square error, the relative error and the error between overlapping flight strips; plane position accuracy is treated in the same way, and intensity quality is measured by information entropy and signal-to-noise ratio.
The standard applies to single-echo and multi-echo airborne LiDAR data and can also be used for spaceborne LiDAR point clouds. It was issued on 15 March 2018 and has applied since 1 July 2018.
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Document preview — GB/T 36100-2018
National Standard of the People's Republic of China
- ICS
- 07.040
- Classification
- A 77
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Airborne Laser Radar Point Cloud Data Quality Evaluation Index
- 5 Airborne Laser Radar Point Cloud Data Quality Evaluation Index Calculation Method
- 5.1 LiDAR point cloud density
- 5.2 LiDAR point cloud elevation accuracy
- 5.2.1 Maximum elevation error
- 5.2.2 Error in elevation
- 5.2.3 Error in Relative Elevation
- 5.2.4 banding elevation error
- 5.3 LiDAR point cloud accuracy
- 5.3.1 Maximum planar position error
- 5.3.2 Error in plane position
- 5.3.3 Error in relative plane position
- 5.3.4 position error of the splicing plane of the flight strip
- 5.4 Lidar point cloud rate
- 5.5 LiDAR point cloud intensity quality
- 5.5.1 Intensity Information Entropy
- 5.5.2 Strength Signal to Noise Ratio
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the lidar point cloud density, elevation accuracy, plane accuracy, etc. used for airborne laser radar point cloud data quality evaluation. Standard and calculation methods.
This standard is applicable to the quality evaluation of airborne single-echo and multi-echo laser radar point cloud data, and the quality evaluation of satellite-borne laser radar point cloud data. The price can refer to the implementation.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest version (including all amendments) applies to this document.
CH/T 1021-2010 Technical Specifications for Quality Inspection of Height Control Measurement Results
CH/T 1022-2010 Technical Specification for Quality Inspection of Plane Control Measurement Results
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Lidar (LiDAR)
A system that emits a laser beam and receives echoes to obtain target three-dimensional information. [GB/T 14950-2009, definition 4.150]
3.2 Point cloud
A collection of points that are distributed in a three-dimensional space in a discrete, irregular manner. [CH/T 8023-2011, Definition 3.3]
3.3 LiDAR point cloud
The point cloud obtained by scanning with Lidar. [CH/T 8023-2011, definition 3.4]
3.4 Point cloud density
The elevation direction is the normal direction, and the average number of laser spots in a point cloud per unit area.
Note: Rewrite CH/T 8023-2011, Definition 3.5
3.5 Point cloud outlier
The outliers in the laser radar point cloud data that do not belong to the surface laser point.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
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