Howard et al,
I've used the Mayavi2 toolkit very clumsily but with quite hopeful
results with the liblas python API as a pipeline to traited vtk. I'm
assuming that the PCL hand-off you reference means that there is an eye
to VTK?
Thanks loads.
Peter
On 04/07/2011 08:45 AM, Howard Butler wrote:
On Apr 7, 2011, at 10:24 AM, Michael P. Gerlek wrote:
Do you use libLAS in your products, or would you if it had some additional
features you need? If so, please read on.
libLAS has been a success, but the world of point cloud support for
geospatial applications goes well beyond just reading and writing the LAS
format -- we want support for other formats, spatial index integration, a
suite of core command line tools, database integration, and so on. To that
end, as some of you may have already heard, the lasLAS team has begun work
on "version 2" of libLAS, known as libPC. The project goals are:
1. libPC is a library which provides APIs for reading, writing, and
processing point cloud data of various formats. Additionally, some
command line tools are provided. As GDAL is to 2D pixels, libPC is to
multidimensional points.
I would add that I expect the scope of libPC is to focus almost *exclusively* on being a
"GDAL for Point Cloud data" too. It is going to try to hand off where appropriate to
PCL<http://www.pointclouds.org>, GRASS/Fusion, and LAStools where appropriate. libPC is
going to start out focussing on format conversion and processing pipelines. The immediate
format support will include Oracle, MG4, LAS/LAZ, BAG, and XYZ.
2. From a market perspective, libPC is "version 2" of libLAS. The actual
code base will be different, however, and the APIs will not be
compatible.
I would say that libLAS : Shapelib :: libPC : GDAL. It didn't make sense to
keep gunking up libLAS with things like Oracle drivers and such, which may or
may not have applicability for people doing LAS. libLAS is also a
point-at-a-time affair, and libPC works chunk-at-a-time (with variably-defined
schemas). This has some performance benefits but adds a little bit of
complexity.
Source code is at http://hg.libpc.org/main if you're interested in a look :)
Howard_______________________________________________
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--
Peter Tittmann
Geography Graduate Group
UC Davis
c. 707 849 4135
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