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- W2356554508 abstract "Filtering of point cloud is the base of airborne LiDAR data processing.A filtering method of airborne LiDAR data based on hierarchical pseudo-grid concept and slope threshold was put forward in this paper.In this algorithm,a hierarchical pseudo-grid which is similar with the image pyramid was constructed firstly.The lowest points in each grid of every scale of pseudo-grid were defined as ground seeds.Then,the ground seeds of high scale pseudo-grid were compared with those of low scale pseudo-grid according to slope threshold.The ground seeds were filtered gradually.Finally,the ground seeds of the lowest scale pseudo-grid were used to filter the whole data set.An experiment was performed with two groups of LiDAR data in city zone and suburb.The results presented in this paper showed that the algorithm was efficient and available." @default.
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- W2356554508 date "2012-01-01" @default.
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- W2356554508 title "A filtering method of airborne LiDAR data based on hierarchical pseudo-grid concept and slope threshold" @default.
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