Washington, DC | March 23-25, 2020
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WORKSHOP ANNOUNCEMENT
March 23, 2019
Streamlined Photorealistic Textured Mesh and True
Orthophoto Generation from Aerial Imagery
Thomas Widmer, Trimble and Mohsen Miri, Trimble
Highly accurate 3D meshes provide virtual navigation of
real-world environments in desktop and web platforms. These
products are used in city modeling, construction and simulation
purposes. Modeling of 3D surfaces with sharp edges and high
quality textured meshes can be performed in a modern and
precise methods. These meshes can be used to produce true
orthophotos, simplifying planimetric mapping and the overlay
of other GIS data, especially in urban mapping applications.
This workshop will explore the methods used to create these
products using Trimble INPHO MATCH-3DX software.
Digital Aerial Triangulation using
Imagery from Multi-Head Systems
Mohsen Miri, Trimble and Thomas Widmer, Trimble
Current aerial mapping technologies lead to capturing a large
number of images, not only at nadir but also in oblique view-
ing directions. The number and variety of multi-head oblique
platforms available on the market is continuously growing. This
workshop presents a stable and simplified workflow for the com-
plex multi-head imagery for higher production efficiencies. This
workshop will explore the workflow and the matching strategies
for such systems using Trimble INPHO MATCH-AT software.
Best Practices for Managing, Editing,
Visualizing, and Sharing Lidar in 2D and 3D
Nicholas Giner, Esri and Lindsay Weitz, Esri
Although lidar data has been collected and processed for over
20 years, the global lidar market continues to rapidly expand as
demand for 3D imagery in consumer, commercial, and govern-
ment applicatioincreases. Federal, state, and local government
agencies are acquiring lidar data for use in applications such as
floodplain mapping, urban planning and design, resource and
environmental management, law enforcement, natural resource
exploration, archeology, and emergency response. This ses-
sion will teach best practices for working with Light Detection
and Ranging (lidar) data . Attendees of this session will learn
lidar basics and fundamentals, as well as the best practices for
managing, editing, visualizing, and sharing it in 2D and 3D.
Attendees will also learn several workflows for deriving useful
information products from lidar data, as well as performing 2D
and 3D analysis on lidar-derived products.
Using USGS/ASPRS Data Quality Measure (DM)
Software for Validation of Airborne Lidar Point Clouds
Barry Miller, USGS and Ajit Sampath, USGS
This workshop provides an in-depth look at the USGS/ASPRS
Data Quality Measure (DQM) software. DQM provides an abil-
ity to determine the relative accuracy, or geometric quality, of
overlapping swaths of lidar point clouds using a point-to-plane
measurement technique. DQM calculates vertical and hori-
zontal differences between swaths in a point cloud tile, which
allows better analysis of the quality of a lidar project. Attendees
will see a demonstration on how to use the tool and interpret
the results with several real-world examples. The workshop
will also show how to obtain the software, which is a govern-
ment-furnished freeware for public use.
UAS Lidar for Precision Mapping
Mohamed Mostafa, Microdrones Canada Inc.
Professional grade lidar systems are currently being used
onboard unmanned aerial systems for high precision mapping
applications. This workshop is intended for the unmanned
airborne lidar user community including mapping professionals,
land surveyors, managers, and decision makers to understand
the underlying concepts of lidar from the technical and business
perspective, in the form of theory and practice, using real data
sets from around the world.
Fundamentals of Image Analysis
in Google Earth Engine
Ge (Jeff) Pu, SUNY-ESF
Cloud-based image processing platforms like the Google Earth
Engine (GEE) bring unprecedented possibilities for education,
research, and outreach. This workshop will focus on an interac-
tive exploration of GEE capabilities, the repository of all of pub-
licly available aerial and satellite data, and user upload of imag-
ery for analysis. The workshop will begin with a presentation of
examples of GEE projects with a focus on education, undergrad-
uate research, and outreach followed by hands-activities.
Preparation for ASPRS Certification – Lidar
Karen Schuckman, Penn State University
This workshop provides an in-depth review of content con-
tained in the ASPRS Airborne Topographic Lidar Manual. It is
valuable for those planning to take the examination for ASPRS
Certified Mapping Scientist-Lidar, Certified Technologist-Lidar,
or Intern. Workshop participants will answer practice questions
and discuss answers in an interactive session. The workshop is
also valuable for practitioners wishing to further their mastery
of the theory and practice of topographic mapping with lidar.
Practical Approach to Using the ASPRS Positional
Accuracy Standards for Digital Geospatial Data
Qassim Abdullah, Woolpert, Inc. and
Claire Kiedrowski, Cornerstone Energy Services, Inc.
This workshop provides an in-depth look at the ASPRS Posi-
tional Accuracy Standards to categorize positional accuracy
of products derived from digital aerial cameras, manned and
unmanned aerial systems, and all types of lidar including terres-
trial, mobile, and airborne. The workshop will explain the basis
for each accuracy measure adopted in the standards. Instruc-
tors will demonstrate practical application of these standards.
Attendees will apply these standards to real-world examples.
