Smoothen Points – XYZ Option

Smoothen points is a command that smoothes the attributes of points relative to adjacent points. Until recently, the modifiable point attributes were elevation, intensity, or color. The elevation option could be used to iteratively adjust elevation values of points using plane-of-best-fit equations to result in a smoother surface. The intensity option could be used to…

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Classify Surface Points Routine

Photogrammetric point clouds are notoriously noisy, very dense, and generally lack points located underneath vegetation. Echo information is non-existent and surface roughness are not as useful for ground classification with these point clouds. Point clouds from low quality LIDAR sensors exhibit some similar characteristics. Hence, a different approach is needed In general, it is a…

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Group Classification Tools Enable New Analysis Methods in TerraScan

Beginning in 2017, additional grouping tools were introduced to enable new methods of conducting above ground classifications, beyond the usual classification routines.  These tools rely on group logic – grouping above ground points with probable relationships with the goal of designating a single group of points per physical object. In short, the usual classification routines…

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Classifying by Groups in TerraScan

Beginning in 2014, some grouping tools were introduced to TerraScan.  Those tools applied to mobile LIDAR applications as they were aimed at classifying moving cars and trees. In late 2016, additional grouping tools were introduced to enable a new method of conducting above ground classifications in airborne LIDAR datasets beyond the standard classification routines.  Prior…

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Tie Line Statistics in TerraMatch

Terrasolid products provide statistical information about the fit of LIDAR and imagery data. This article is the second in a series that provides meaning to this type of information. We will conduct a brief review of the relevant statistics and discuss how these principles are applied to the use of tie lines for laser calibration.…

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Control Point Statistics in TerraScan

Terrasolid software offers a variety of ways to gauge the accuracy of LIDAR and imagery data.  From using control points to determine the vertical accuracy of a ground surface, tie lines to measure and correct the mismatch between overlapping flight lines, and tie points to correct aerial imagery positions, each of these tools provide the…

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Terrasolid Product Installation & Setup Guide

This guide provides information on how to install, register and configure your Terrasolid products and licenses. Installing Terrasolid Products Guide Contents Introduction…………………………………………………………………………………………………………… 1 Invoice……………………………………………………………………………………………………………….. 1 About Terrasolid OY…………………………………………………………………………………………………….. 1 About GeoCue Group……………………………………………………………………………………………………… 1 Downloading the Installation Packages…………………………………………………………………………………….. 2 Bentley MicroStation Based Packages……………………………………………………………………………… 2 Microsoft Windows Based Packages……………………………………………………………………………….. 4 Installing the Products………………………………………………………………………………………………….. 5 Registering Your Terrasolid…

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Waveform Data in TerraScan

Many users of LIDAR use discrete return systems for their production, however, many systems are capable of capturing the full waveform of the energy returned from an outgoing laser pulse. The figure illustrates a laser pulse directed through a tree.  Different portions of the laser energy are backscattered/returned by various surfaces: branches, twigs, leaves, and…

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Terrasolid Licensing for v017

Happy new year! With the new year upon us we want to provide some important information about the Terrasolid product licenses. Each year Terrasolid releases a major version change.  Note that this isn’t a major release in the traditional sense as Terrasolid releases incremental releases of the software packages on a continual basis which add…

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Rut Analysis using Terrasolid

One of the many applications that are suited to the use of mobile LIDAR analysis, is the identification and measurement of ruts and potholes. Here we will discuss the preparation of the data, ways to visualize rutting, the classification of pot holes, and the production of road section parameters. As with any kind of LIDAR…

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