​Thank you Jonathan, yes, in the future we'll setup a PostGIS layer​, so I'll probably look into the extension (https://github.com/pgpointcloud/pointcloud, for reference).
Regarding what you said about culling the cloud before buffering: how would you do that? I am thinking about using an ad-hoc PrecisionModel for the GeometryFactory with the resolution that relaxes to that of a current pixel area of the map, so that each point that falls within the same pixel. Were you meaning such kind of "pre-thinning" ? I remember that (surprisingly) using a non-standard precision model (FLOATING or FLOATING_SINGLE for instance) in the GeometryFactory *inflates* the computational cost despite you are e.g. reducing the algebra resolution. -Piero On 5 April 2016 at 18:24, Jonathan Moules <[email protected]> wrote: > Hi Piero, > Douglas-Peucker won't do anything to a point-cloud; it removes > vertices from lines and polygons. What you want is some sort of thinning > algorithm, I'm not sure if there's such a thing in the JTS (none of the > ones on: > http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/simplify/package-frame.html > look applicable). > > Thoughts: > * Can you do all (or at least some) of this process database side? > That may be preferable. PostGIS and the pointcloud extension has a lot of > powerful tools. > * How about pre-thinning (cull) the points so that you only have the > detail level that you need in your data store? > * There's also PDAL - http://www.pdal.io/ > > Cheers, > Jonathan >
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