Method for constructing DSM based on building contour line and airborne LiDAR data

doi:10.6046/gtzyyg.2013.02.17

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Abstract In order to obtain high accuracy DSM data, the authors put forward the method for construction of DSM by using irregular ground points and contour vector line of buildings. First, the point clouds are separated into ground points and non-ground points through adaptive TIN filter method. Second, the building points are separated from the non-ground points according to the height texture. Then, the edges of buildings are extracted by Canny operator based on the depth images of the building which have been gray-quantized; afterwards, the azimuth clustering Comparative Law is used to regulate the building edge. Finally, the DSM could be built by using irregular ground data and contour vector line of buildings. An experiment was performed with a group of LiDAR data obtained in Liuzhou. The results show that the information of buildings’ edges can be more accurate in the DSM constructed by the proposed method in this paper.

Keywords press-state-response(PSR) model ecological security landscape scale

TP75

Issue Date: 28 April 2013

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	YU Jijin
	CHEN Xueling
	CHEN Shaojie

Cite this article:

YU Jijin,CHEN Xueling,CHEN Shaojie. Method for constructing DSM based on building contour line and airborne LiDAR data[J]. REMOTE SENSING FOR LAND & RESOURCES, 2013, 25(2): 95-100.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2013.02.17 OR https://www.gtzyyg.com/EN/Y2013/V25/I2/95

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