[pdal] recognize tree/vineyard row

[Howard Butler]

> On Oct 22, 2021, at 10:39 AM, Luca Delucchi <lucadeluge at gmail.com> wrote:
> 
> Hi all,
> 
> I would like to know if it is possible and what route to take to
> correctly extract rows of trees or vines from a point cloud created
> with OpenDroneMap.
> I was thinking of calculating the CHM using DTM and DSM but the DTM I
> get is not precise enough (especially in pergola vineyards), I tried
> with SMRF filter changing the parameters but I have not found the
> right combination yet. so I was thinking of working directly on the
> point cloud.
> 
> Do you have any advice?

Luca,

I can't think of anything specific in PDAL other than some of the neighborhood metrics that you might use to help you combine into something that you then jump to Python to implement.

There's probably not much you can do without more resolute data like LiDAR. Maybe you can use 2d imagery and some kind of machine learning or transfer classification to hint whether or not you are in a vineyard, which would help limit your processing.

Howard