All Returns Unknown

vinhoovinhoo Global Mapper UserPosts: 3
edited October 2014 in Raster Data
Hello All, first post for me.

I have a data set created by Pix4D, which outputs a DSM (Geo-tif) and a .las file.
I am using Global Mapper Lidar module to reading the .las and would like to output a bare earth .dem.

Problem is all my points are 100% Unknown. How can I enable GM to recognize a ground point and process the data as bare earth? Reclassify points?

Many thanks,


  • Jasmine_BMGJasmine_BMG BMG Staff Posts: 174
    edited October 2014
    Hello Vinhoo,

    I am not familiar with Pix4D, do the Lidar points generated by the application have ASPRS classifications that are not being pickup up on by Global Mapper? You can try the Automatic Classification of Ground Points tool.


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