Hi All,
I’m new to process LiDAR data using FME and just received a bunch of LAS files that need to process as DEM (output).
I was doing some reading and users sue the _classifciation to classify the data but have just realised that my data isn’t classify as my classification filed is 0? Screenshot below:
I’ve also tried to use the PointCloudLASClassifier but the classification is 0 so doesn’t work.
Any trick to classify the data and be able to export the DEM?
Hi All - I have been doing some investigation ans seems the classification for the non-classified LAS data can be possible by using https://rapidlasso.de/ tool but need license for it,
Is there any workaround or tool to classify LiDAR data (within FME or outsite FME)?
Thanks
Hello
1.) Generate Points from your LAS Files with PointCloudToPointCoercer
Info: befor that, maybe you will reduce the number of points (PointCloudThinner)
2.) In your screenshot: i can see that the highlighted Point have the Value Z=40…. thats good.
2.1) The Output of the PointCloudToPointCoercer, should you send through a Tester.. but befor this you need to generade the Attribute Z/high of the Points you generated, with the CoordinateExtractor.
3.) Set a Tester with a Range from Z(0) Value to 1,. maybe thats enought ? (i dont know the Z values of allpoints from ur screenshot) and you can send this points to the DEMGenerator.
Hope i can help,
greetings Michael
Do all points in your point cloud have Classification=0?
You could also try another approach than the PointCloudLASClassifier - for some LAS files it doesn’t seem to catch the classification properly. See my screendump below; if I pass the data through a PointCloudSplitter and an AttributeFilter, the “Ground” Classification (2) turns out, but not when passed through the PointCloudLASClassifier.
