This directory requires one to build vxl from its Subversion repository:

http://vxl.sourceforge.net/

Download instructions:

http://sourceforge.net/scm/?type=svn&group_id=24293

svn co https://vxl.svn.sourceforge.net/svnroot/vxl/trunk vxl

One uses CMake to build and install the vxl package. The following
CMake cache options should be set ON when configuring vxl:

BUILD_CONTRIB
BUILD_CORE_GEOMETRY
BUILD_CORE_IMAGING
BUILD_CORE_NUMERICS
BUILD_CORE_SERIALISATION
BUILD_CORE_UTILITIES
BUILD_MUL
BUILD_OXL
BUILD_RPL
BUILD_RPL_RGTL

Other options may be set OFF:

BUILD_BRL
BUILD_CONTRIB_VIDL2
BUILD_CONVERSIONS
BUILD_EXAMPLES
BUILD_FOR_VXL_DASHBOARD
BUILD_GEL
BUILD_MUL_TOOLS
BUILD_OUL
BUILD_PRIP
BUILD_SHARED_LIBS
BUILD_TARGETJR
BUILD_TBL
BUILD_TESTING
BUILD_UNMAINTAINED_LIBRARIES
BUILD_VGUI

After building vxl one may optionally install it, but one may also use
vxl directly from its build tree. When configuring this project,
set VXL_DIR either to point at the vxl build tree or at the

/share/vxl/cmake

directory of the vxl install tree.

------------------------------------------------------------------------------
This directory contains Brad King's research code for analysis of
LiDaR points and extraction of a terrain surface hypothesis.
Currently the interface is very primitive. There are two executables
which must be run in succession:

cmbTokenRefine input.vtp outname
cmbTerrainExtract input.vtp name max min

The "cmbTokenRefine" tool reads input points from a Visualization
Toolkit Polygonal data file (.vtp) and generates a set of files whose
name start with . These files contain a serialized
representation of the Tensor Voting tokens suitable for use at each
voting scale selected by the tool. They are numbered by "scale index"
and serve as input to the second tool.

The "cmbTerrainExtract" tool loads the representation serialized by
the first tool for a range of scale indices given by the and
arguments. The given must match the given to
the first tool. This tool generates a terrain surface hypothesis in a
coarse-to-fine manner. It generates a series of .vtp files with
increasingly detailed terrain.

Example Usage:

$ mkdir TestTrackGroupA && cd TestTrackGroupA
$ /pathto/cmbTokenRefine /pathto/TestTrackGroupA.vtp TestTrackGroupA
$ /pathto/cmbTerrainExtract /pathto/TestTrackGroupA.vtp TestTrackGroupA 17 8

The code has not been tested with input data sizes more than 1e6 points.