IMU and Compass Calibration for Pixhawk

Calibrate IMU and Compass after updating new firmware for AV900 If AV900’s firmware is updated, it’s recommended that the IMU and compass should be re-calibrated. Here are the step-by-step instructions to re-calibrate them: Prepare the Drone Insert and secure the battery into the AV900 Raise and secure the GPS/Compass (fig. 1) Figure 1. The GPS/Compass must be…

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Modify the Scan Angle Filter

The Scan Angle Property page allows you to customize settings for filtering points based on their Scan Angle values for display or for performing point cloud tasks, similar to a Class filter or Return value filter. Open the Properties dialog box on the LP360 toolbar. Click the Display tab, then click either the Points Filter…

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Link Several Waveform files to one Trajectory

When using the Link to waveform command, an index file is created that speeds up some further processing steps when the waveform is required. In the waveform field of the Trajectory information dialog, wildcards can be used to link several waveform files to one trajectory. Example: Files name, “Laser_20160204_074422_FL17.las”, where the FLXX is the line…

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Running TerraScan macros from CONNECT ribbon

It is possible to run a TerraScan macro using a button on the ribbon in MicroStation CONNECT. The process to assign a macro to the ribbon takes three steps: Step 1: Create Macro In TerraScan create and save a macro. The macro needs to be saved to a location that it searchable by MicroStation. This…

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Moving Objects Workflow

For those of you that process mobile LIDAR data, it can be necessary to filter out the points that represent moving cars. This can be accomplished using the Classify Moving Objects routine. This tool classifies groups of points that are captured from moving objects. It can be used for mobile laser data sets. The routine requires…

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Recommended TerraScan Settings

The settings in TerraScan (TerraScan->General Toolbar->Settings) can be configured to make some processes easier and more suited to typical uses leading to a more productive workflow. Settings may be shared with multiple users via a network location. It is recommended to leave the folder read only for most users to prevent undesired changes. Operation Settings…

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Create a Redline in Reckon

This workflow explains how to create a redline in Reckon.  Redlining provides the ability to create, edit and publish geometries with attributes.  Redlines can be used to communicate work to be done with a service provider (i.e. defining stockpiles to be analyzed), edit existing features, create new features and can be downloaded as ESRI shape…

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Moving Objects

Moving objects routine classifies groups of points that are captured from moving objects. It can be used for mobile laser data sets. The routine requires that data from multiple lines or scanners is available. The routine classifies groups of points that are captured at one moment of time and at another moment of time, when…

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Assign Groups

Assign groups command assigns a group number to points of one or more classes. The grouping is done based on different methods, such as plane fitting, watershed algorithm, or 3D spacing between points. The group assignment relies on a distance from ground value that must be computed for the points before the command is started.…

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Compute normal vectors

Compute normal vectors command can be used to compute and store two additional attributes for laser points, a dimension and a normal vector. The software determines the dimension of each point by analyzing the point and its closest neighbour points. There are three types of dimensions: •Linear – points form a linear feature. •Planar –…

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