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Author Topic: Dense Cloud Auto classification - buffer  (Read 1171 times)

Sirius

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Dense Cloud Auto classification - buffer
« on: July 21, 2017, 01:42:04 AM »
The auto classification does a reasonable job at finding non-ground objects and re-classifying them as such.  However just at the edge of the object the ground classified points start to raise up before the classification changes to non-ground. 
For example:  Lets say there is a car park in the area being modeled.  I set the auto classify filter relatively tight, 50mm and 10 degrees. The filter does a good job of finding a car and changing the classification of most of the car to non-ground points.  Just around the edge however the points will ramp up 50mm before the classification changes.  Once a surface is created this leaves a 50mm platform in the surface of the car park which needs to be manually removed.
If we could add a buffer to the auto classify routene that changed points within a specified horizontal distance of any non-ground point to also be a non ground point the problem could be solved.

eg.  Once classification is complete there is  a second step where any ground classified points within a nominated distance of a non-ground classified point is also changed to non-ground.

Hard to explain so I attached a picture.

3DFranz

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Re: Dense Cloud Auto classification - buffer
« Reply #1 on: July 25, 2017, 12:15:52 PM »
+1

Yoann Courtois

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Re: Dense Cloud Auto classification - buffer
« Reply #2 on: July 27, 2017, 03:30:06 PM »
+1

But for some applications those points are useful.
I would suggest to classify them in another class so that they still could be use or not.

Regards
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Yoann COURTOIS
R&D Engineer in photogrammetric process and mobile apps
Lyon, FRANCE
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obw

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Re: Dense Cloud Auto classification - buffer
« Reply #3 on: August 16, 2017, 01:10:59 PM »
+100!

This has been a huge problem for me as well around buildings and cars etc. Would really appreciate this feature.

SAV

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Re: Dense Cloud Auto classification - buffer
« Reply #4 on: September 20, 2017, 10:38:09 AM »
+1

bart

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Re: Dense Cloud Auto classification - buffer
« Reply #5 on: November 08, 2017, 10:19:23 PM »
+1 , bump!

Will it be available soon? It's real problem.