Changes between Initial Version and Version 1 of Processing/LidarNoisyPoints


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Timestamp:
Feb 21, 2012 11:20:52 AM (8 years ago)
Author:
mark1
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  • Processing/LidarNoisyPoints

    v1 v1  
     1= Post Processing LiDAR Point Clouds=
     2
     3The usual form of delivery of the processed LiDAR data is in the form of a point cloud. This takes one of two forms; [link ASCII text files] or [http://www.asprs.org/Committee-General/LASer-LAS-File-Format-Exchange-Activities.html binary LAS] files. As part of the standard processing and quality checking of the LiDAR point clouds, ARSF-DAN classify 'noisy' points. This is done both by using automatic algorithms and by viewing the data. The noisy points can be one of the following:
     4
     5 * isolated points
     6 * isolated clusters of points
     7 * water induced noise
     8 * cloud noise
     9 * system noise
     10
     11It is advised that these points be removed before using the data, unless they are of specific use to your studies.
     12
     13== Removing Noise Points ==
     14
     15When a point has been identified as being 'noise' it is given a classification value of '7'.