Research of filtering method for urban airborne LIDAR date

TANG Fei-fei

doi:10.3969/j.issn.1001-3806.2011.04.021

LASER TECHNOLOGY > 2011 > 35(4): 527-530. > DOI: 10.3969/j.issn.1001-3806.2011.04.021

TANG Fei-fei, . Research of filtering method for urban airborne LIDAR date[J]. LASER TECHNOLOGY, 2011, 35(4): 527-530. DOI: 10.3969/j.issn.1001-3806.2011.04.021

Citation:

TANG Fei-fei, . Research of filtering method for urban airborne LIDAR date[J]. LASER TECHNOLOGY, 2011, 35(4): 527-530. DOI: 10.3969/j.issn.1001-3806.2011.04.021

Citation:

TANG Fei-fei, . Research of filtering method for urban airborne LIDAR date[J]. LASER TECHNOLOGY, 2011, 35(4): 527-530. DOI: 10.3969/j.issn.1001-3806.2011.04.021

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Research of filtering method for urban airborne LIDAR date

TANG Fei-fei^1,2, ,,

1.
School of Civil Engineering, Chongqing University, Chongqing 400044, China;
2.
Key Laboratory of New Technology for Construction of Cities in Mountain Area of Minsitry of Eductation, Chongqing University, Chongqing

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Received Date: October 17, 2010
Revised Date: January 11, 2011
Published Date: July 24, 2011

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Abstract

Abstract

To extract urban digital terrain model (DTM) from airborne laser scanning data,a filtering algorithm was proposed after analyzing the multi-pulse characteristics of urban airborne light detection and ranging (LIDAR) data.In this method,according to the distribution characteristics of urban airborne LIDAR data,laser footprints were distributed into voxels with proper volume,then object points were excluded and terrain points were reserved on the basis of filtering rules.Finally,the experiment result shows that this method can extract DTM more effectively.Meanwhile,the calculation amount is reduced during data processing which is helpful for improving computation efficiency of the mass LIDAR data.
- laser technique,
- urban digital terrain model,
- filtering light detection and ranging,
- multi-pulses

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References

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[5]	MENG X L.A slope-and elevation-based filter to remove non-ground measurments from airbome LIDAR data[C]//Archives of Intemational Society of Photogrammetry and Remote Sensing.Dreaden,Cermany:Institute of Photogrammetry and Remote Sensing,Dresden University of Technology,2005,36:23-28.
[6]	SHAN J,SAMPATH A.Urban DEM generation from raw LIDAR data:a labeling algorithm and its performance[J].Photogrammetry Engineering & Remote Sensing,2005,71(2):217-226.
[7]	TANG F F,LIU J N,ZHANG X H,a al.A voxel-based filtering algorithm for DTM data extraction in foreat areas[J].Journal of Beijing Forestry University,2009,31(1):55-59 (in Chinese).
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