GIS in Action 2019: UAS

Welcome to the 27th annual GIS in Action Conference!

GIS technology and professionals are at work around the clock to support our basic needs and our livelihoods. From directing emergency responders to the scene of an accident, to synchronizing trading on Wall Street, to building 5G networks that support self-driving cars, geospatial data and technology helps us understand our environment and improves the quality of our lives.

Whether you are a LiDAR analyst working on risk mitigation, a wildlife biologist conducting habitat assessment, or an economic policy advisor modeling for financial stability, the geospatial approach provides a lens to illuminate and advance our diverse interests and goals.

We are excited to have you join us at this year’s GIS In Action conference. For our keynote, Sisinnio Concas, Ph.D., Program Director for the Center for Urban Transportation Research, will share his insights into autonomous and connected vehicles and how new data sources are critical to developing smarter cars and smarter roads. Through the conference’s diverse sessions, workshops, and socials, you will have opportunities to learn and share with your colleagues and make new professional connections.

GIS in Action is a collaborative effort between the Oregon and Southwest Washington chapter of URISA and the Columbia River Region chapter of the American Society for Photogrammetry and Remote Sensing (ASPRS). The value of the geospatial industry grows greater every year, and every year GIS In Action brings together talented, creative people to share what they’re working on. Let’s share our collective IQ, learn from one another, and build a stronger, more vibrant community. We look forward to meeting you!

Camille Westlake, President, ASPRS Columbia River Region
Molly Vogt, President, Oregon & SW Washington URISA

The conference takes place Monday, April 22nd and Tuesday, April 23rd in the 3rd floor ballroom at Smith Memorial Student Union on the Portland State University campus (1825 SW Broadway, Portland, OR 97201 ).

UAS

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Drone Selection and Comparison of GNSS vs Drone Contour Maps
Jack Walker, Oregon Tech
The Geomatics Department recently purchased a drone with the intent of generating “Survey Grade” geospatial information. This presentation will discuss the selection considerations which lead the department to purchase an Intel Falcon 8+ UAS. Some of the growing pains associated with this new geospatial tool will be discussed. The drone was used to create a 1-foot contour map of a 25 acre parcel and compare the contours to an RTK GPS map of the same area for an initial evaluation of whether the drone could create a survey grade product.

Automatic Surface Change Detection Using DSMs Derived from sUAS Images
Geoffrey Duh, Portland State University
Change detection performed on digital surface models (DSMs) from different time periods can reveal landscape structural changes caused by, for example, urban development or natural disasters. This presentation introduces a change detection tool that automatically identifies terrain surface changes using DSMs generated from images collected by commonly available small unmanned aircraft systems (sUAS). Although UAS-based photogrammetry can generate high-resolution DSMs, the positional accuracy of the onboard GPS and the distortion introduced in the generation of DSMs by the Structure from Motion (SfM) method make aligning the DSMs for change detection impossible without manual image registration or georeferencing with ground control points (GCPs). The automatic surface change detection tool streamlines the geoprocessing tools available in ESRI ArcGIS Desktop to align and detect changes on the 3D surfaces created in Agisoft Metashape without using any GCP. The presentation also describes a case study using the sUAS images collected in October 2017 and early 2019 for detecting surface changes due to urban expansion in a suburban area in Beaverton, Oregon. The desktop computer tool could augment the utility of sUAS in emergency response applications.

Speakers

Debbie Blackmore

Geoffrey Duh

Associate Professor, Geography, Portland State University

Geoffrey Duh is an Associate Professor of geography and Director of GIS Programs at Portland State University. His research focuses on developing geo-computational theory and techniques to integrate Geographic Information Systems (GIS) and remote sensing in spatial decision-making... Read More →

Jack Walker

Professor of Geomatics, Oregon Tech

Jack A. Walker is a professor of Geomatics at Oregon Tech. He teaches courses including geodesy, map projections, least squares adjustment, and remote sensing.

GDuh GIS in Action 2019 3DChangeDetection pdf

GIS Drone Presentation 2019 Final pdf

Tuesday April 23, 2019 11:00am - 12:00pm
Room 296/298

Remote Sensing, Speaker