Author: GeoCue Support Page 62 / 73
GeoCue Support has written 730 articles
Testing the LP360 Volumetric Analysis Tool
In previous articles of GeoCue News we covered how the Volumetric Analysis Tool within LP360 works, and how it can be used within a project, LP360 Under the Hood: Volumetric Analysis and Volumetrics – Do it Right!, respectively. We’re often asked how accurate or reliable the volumetric results can be expected to be. In this…
New to LIDAR processing and looking for some reference material to strengthen your knowledge in the field?
May we suggest the following: Airborne Topographic Lidar Manual by Michael Renslow, Editor https://eserv.asprs.org/web/staticcontent/staticpages/4587.htm Topographic Laser Ranging & Scanning Principles & Process by Jie Shan and Charles Toth https://eserv.asprs.org/web/staticcontent/staticpages/4583.htm Digital Elevation Model Technologies & Applications, 2nd Ed. by David F. Maune, Editor https://eserv.asprs.org/web/staticcontent/staticpages/1069.htm
Error Launching LP360 Standalone
User receives an error message stating, “The application was unable to start correctly (0xc0000142).” when attempting to launch LP360 for Windows (32-bit or 64-bit). The error concerning the application being unable to start correctly is likely occurring due to either: another program using the same DLL’s as LP360, a virus, or Group Policy Objects. Option…
Recommended Hardware & Software
In this appendix that generally accompanies proposals for our GeoCue Workflow Management software we provide general hardware and software recommendations. Please note that these recommendations are not the minimum requirements for GeoCue products (the system can run on much lesser configurations than our recommendations). These are recommendations based on our experiences with clients involved in…
Setting the Overlap classification flag
LAS v1.4 introduced the concept of the Overlap classification flag. Since this new flag did not previously exist in the classification code byte, the class offsets discussed here do not apply to the Overlap classification flag. A user would need to have both LP360 and TerraScan in order to properly identify and flag overlap points.…
LAS v1.4 Conversion
If you are involved in airborne LIDAR workflows in North America, you will immediately understand the value of supporting LAS Version 1.4, Point Data Record Format 6 for your end-to-end workflow as this will be the required deliverable format for the USGS 3D Elevation Program. Of course, this will drive all standard airborne LIDAR deliverables…
Ground Coordinate Systems
Purpose: This technical note explains Grid-to-ground projections (AKA “ground coordinates”, “surface coordinates”, “localized coordinate networks”, etc.) within GeoCue. A ground coordinate system is a local coordinate system created by modifying the origin and scale of an existing projected coordinate system, such as a state plane or UTM grid system. The ground system is tied to…
Assign Strip Numbers From Log File
Purpose: This technical note explains how to assign strip numbers to source (flight lines) prior to populating LAS working segments or generating TerraScan Trajectories. Most LIDAR system manufacturer software does not automatically assign file source ID to the strip based LAS files. Also, original strip numbers may not correspond with flight plan strip numbers. For…
Generating Low Confidence Polygons
In the new ASPRS Positional Accuracy Standards for Digital Geospatial Data, low confidence areas within LIDAR data are defined to be where the bare earth model might not meet the overall data accuracy requirements. Generally speaking with LIDAR data this can occur where there is heavy vegetation that causes poor penetration of the pulses. If…