Photogrammetric Point Cloud Processing

Point Clouds generated through photogrammetric methods (such as Dense Image Mapping) have different characteristics than traditional airborne laser scanner systems or “normal” LIDAR point clouds.  Specifically, the data is very dense, which can negativity impact processing time, and the data is also very noisy, which can cause the normal classification routines to err. The echo…

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User Guide for the LPRunPCT.exe Command Line Tool

A new command line driven, Windows application has been written to execute LP360 point cloud tasks. The tool “LPRunPCT.exe”, available in the 2015.1 Service Pack A, allows you to run a point cloud task from the command line with a number of command line options and associated parameter files. This tool is very useful in certain…

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LP360 Rail Extraction Tools for LIDAR

The LP360 Rail Extraction tools for LIDAR data automatically extract a rail alignment (centerline) vector as well as classify “top of rail”. This feature is implemented as a semi-automated Point Cloud Task (PCT) and is available in the Advanced version of both LP360 for ArcGIS® and LP360 for Windows® (the standalone version of LP360). We recommend…

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Automatic Building Classification

So you have received LIDAR data and you really need to classify all those buildings in a timely fashion. The LP360 Planar Point Filter is an automatic process for classifying planar surfaces such as buildings. Located in the Point Cloud Task tab of the Table of Contents window of LP360, you can quickly set up…

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Departments of Transportation Select LP360

Tennessee and Florida Departments of Transportation recently selected LP360 as their LIDAR point cloud analysis tool. Both DOT’s cited ease of use and that LP360 works easily inside of ArcGIS as some of the main determinants in their selection of LP360. Other factors in Tennessee DOT’s selection was LP360’s breakline tools and the ability to…

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LP360 Under the Hood – The Conflation Point Cloud Task

In the January issue of GeoCue News, we discussed the new Point Cloud Task (PCT) overhaul that we released in LP360 2013.2. The focus of the last article was on the new Input/Output Manager (IOM) for setting the inputs and outputs of the various PCTs that LP360 provides. In this month’s article I will describe…

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QA/QC on LIDAR data using either LP360 Command line executables or the Point Cloud Statistics Extractor

You can do part of a synoptic QA/QC on LIDAR data using either LP360 command line executables or the Point Cloud Statistics Extractor, which is one of the Point Cloud Tasks found within the LP360 GUI. Some general QA/QC information that can be gathered includes, but is not limited to, projection information, GPS time format,…

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Breaklines, Part 3 – Z Conflation

As we have discussed in the last two issues of LP360 News, breaklines are two- or three-dimensional graphic data (points, lines, polygons) that we introduce into an elevation model to alter the topology. When working with Geographical Information System (GIS) models, we nearly always model complex, irregular elevation data as a Triangulated Irregular Network (TIN).…

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Point Statistics in LP360

I often find myself running point statistics in LP360 (either LP360 for ArcGIS or LP360 for Windows) using the stamp Point Cloud Task tools. This allows me to take multiple samples across the project for point density testing or classification counts. Read more… Point Statistics in LP360

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