TerraScan: The Distance Attribute

In late 2016 Terrasolid added Distance as a point attribute in their Fast Binary (FBI) format. This format is the one used for loaded points in TerraScan, so even when processing in LAS you have access to utilizing the attribute, you just need to compute and use it at the same time since it does…

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LIDAR in Railroad Maintenance and Safety Analysis

The purpose of this animation is to illustrate a few railroad track maintenance and safety related factors. Download the presentation from Intergeo 2018. Draw Sight Distances – Potential obstacle search is defined as a constant value in the tool’s settings. Classify by Section Template – This classification routine is useful for classifying points along roads,…

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Point Cloud as 3D City Model

Colorized and georeferenced point cloud, with or without already collected vector data, provides a sound platform for several municipal applications. This 3D City Model example is from the wooden city centre of the town of Rauma, Finland which is listed as a UNESCO World Heritage Site. TerraStereo is a stand-along application for visualizing very large…

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Tutorial: Use Find Curb Along Element to Detect Curbs

This short tutorial shows the suggested road curb detection method using TerraScan’s Find Curb Along Element tool. This tool creates two 3D line elements following the lower and upper edges of curb stones in a point cloud. It separates the lower and upper edge by a given minimum horizontal distance so the breaklines may be…

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Tutorial: Import Pix4D Project to TerraPhoto and Create Orthophoto

This quick tutorial shows the steps of the process to import a Pix4D project into TerraPhoto and continue with Orthophoto production. Load from Terrascan – References points loaded into Terrascan Define color points – Helps eliminate color differences Place selection – Specify images to be used in area defined. Rectify mosaic – Starts the production…

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Vectorize Rails, Wires, and Compute Track Geometry

Review these results of a TerraScan project that uses tools to automatically vectorize rails, wires, and fit geometric components to a breakline derived from the as surveyed rails. Railroad toolbox – Used to place lines, to fit lines to classified points along rails, to find rails and overhead wires automatically, and to check end points…

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Analyze and Design Road Surface Improvements

Review these results of a TerraScan project that uses tools to analyze and design road surface improvements. Define color points – On-the-fly extraction of color values for each point, display of the point cloud. Draw Sight Distances – Determines how far a viewer sees along a road, railroad, or other corridor, and produces labels for…

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Tutorial: Adjust Mobile Point Cloud Intensity and Find Paint Lines

Learn how to scale intensity and find paint lines using a mobile point cloud using TerraScan in this short tutorial. Hard surface classification – Initial surface classification View histogram – Analyze distribution of intensity values Scale intensity – Compute new intensity values By intensity – Classify based on intensity value distribution Smoothen points – Smoothen…

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