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Paula Lightfoot

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Question about depth filtering
« on: March 15, 2017, 01:15:01 PM »
Hello,
While building dense point clouds from UAV imagery, I've tried mild, moderate and aggressive depth filtering to compare results and see which would be best for my project.  When applied to exactly the same data with all other parameters the same, I noticed that mild filtering produces a point cloud with the lowest total number of points and point density, while moderate filtering produces a point cloud with the highest total number of points and point density.  Aggressive filtering produces results that are in-between moderate and mild, in terms of number of points and point density.  Does that sound right?  I am new at this, but I was expecting moderate filtering to produce results in-between mild and aggressive, or is there no correlation expected between the level of depth filtering and the point density of the output?
Thanks
Paula