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Lewis Graham has written 63 articles

What’s New in LP360 2018.2?

We will be releasing the second major update of LP360 in December of 2018.  LP360 is a major focus for GeoCue software development and it really shows in this new release.  LP360 is delivered in two platforms; an extension to ArcGIS (“LP360 for ArcGIS”) and as a standalone 64-bit application for Microsoft Windows® (“LP360”).  When…

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Importing Control/Check Points into LP360

Platform: LP360 (Standalone) Minimum Licensing: Standard, sUAS Version: 2017.1 or higher Date: 15 September 2018 Introduction: This note describes importing control and/or check points in text format into LP360 for use in accuracy assessment. We distinguish these points as: Control Point – A point that was used in the modeling process. It generally should not…

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Breaklines in LP360- Part 2

This article is a continuation of the discussion of breaklines in LP360 (the standalone version). In last month’s installment, we discussed the overall concept of data modeling, especially the Triangulated Irregular Network (TIN). In this installment, I will discuss the general concept of adding constraints in the form of breaklines to these models. In future…

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Breaklines in LP360 – Part I

Prolog: I am writing a new whitepaper on model constraints in LP360 (any reference to LP360 where I do not add the term “for ArcGIS,” I am talking about the standalone version. This document is extracted and heavily revised from a series of articles that I wrote for the GeoCue Group Newsletter in 2013. The…

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LP360 Features Utility Tool

As many of you who are involved in LIDAR breakline collection know, we added some very nice feature edit tools to the Standard level of LP360 (Windows standalone version).  One of these tools, “Create Features from Selected Features” is a very handy utility tool.  Its basic function is to collect features you have selected with…

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AirGon Quick Tip

If you are not accustomed to survey techniques, this is a quick tip for speeding up visits to repetitive sites. The AirGon Loki Direct Geopositioning system is a huge time saver when it comes to drone survey work.  Loki reduces or eliminates the need for ground control points (but please, always have a reliable way…

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Direct Geopositioning Accuracy using AirGon Loki – A Case Study

Introduction: In September of 2017, AirGon LLC released Loki, a direct geopositioning system for the DJI Inspire 2 drone as well as generic drones carrying a digital single lens reflex (DSLR) camera.  Since that time, Loki has been adapted to the Phantom 4 Pro and the m2xx series of DJI drones.   A direct geopositioning system…

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The Accuracy Triangle – The Photogrammetric Triad

We get a lot of questions regarding accuracy in drone mapping projects.  These questions range from ground control layout suggestions to the necessity of calibration cameras.  Sometimes it is useful to step back a bit and take a wholistic view of the elements that impact photogrammetric accuracy.   The information in this article is meant…

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Automatic Ground Classification of Dense Point Clouds in LP360

The density of point clouds (usually expressed as points per square meter) is increasing on what seems to be a monthly basis.  This is particularly true of point clouds derived from Dense Image Matching (DIM), the clouds produced from software such as PhotoScan, Pix4D, DroneDeploy and so forth. You can quickly check the density of…

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