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LAS point cloud shift after running the "Advanced Filtering" tool

  • 1.  LAS point cloud shift after running the "Advanced Filtering" tool

    Posted 09-16-2024 08:35

    I have already reached out to my vendor about this problem, but while I wait for an answer, I figured I would reach out to the community and see if anyone else is experiencing the same issue. after running the Advanced filtering tool on a set of registered LAS files there is a shift in the point cloud that does not match the results created during the registration of the same point cloud. The new created scan stations have a shift and the original scan stations lose the registration.  After closing the same project I receive this error once it is reopened.

    Here is a picture of the shift in the point cloud that appears once the filtering is finished.



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    Brandon Elia
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  • 2.  RE: LAS point cloud shift after running the "Advanced Filtering" tool

    Posted 10-14-2024 09:15
    Edited by Jacob Foushee 10-14-2024 12:08

    Did you figure this out? I run into the same issue often. I have read that exporting and reimporting the point cloud fixes the shift. In my experience, that only works rarely. 

    I tried updating TBC, but I continue to run in to the same issue. 



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    Jacob Foushee
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  • 3.  RE: LAS point cloud shift after running the "Advanced Filtering" tool

    Posted 10-15-2024 07:28

    Hi Jacob,

    When importing the LAS files, I noticed the insertion point was sever thousand feet away even though the point cloud displayed in the proper location.  I believe that because the import location of the point cloud was so far away it was causing a scaling issue when running through the filter algorithm. Under the advanced settings in the import dialog box there is an option to key in the import location of the point cloud. In this box I started keying in the central location of the point cloud. Using this import method I have now ran the advanced filter function on several data sets with success. 



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    Brandon Elia
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