ASPRS 2013 Annual Conference

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Workshops

Pre-conference workshops will be held on Sunday, March 24, 2013 and Monday, March 25, 2013. These workshops are intended to be educational and not for promoting vendor software or hardware.

Click on the workshop title you are interested in below and you will be taken to the full workshop description.

Sunday, March 24, 2013

Monday, March 25, 2013

Sunday, March 24, 2013

The workshops #1 - #5 below will take place on Sunday, March 24, 2013. Please pay close attention to the start and end times for each workshop.

Workshop #1 - Georeferencing: State of the Art and New Trends
Sunday, March 24, 2013 (7:45 am to 5:15 pm)
Joe Hutton, Director of Inertial Technology and Airborne Products, Applanix Corporation and Dr. Mohamed MR Mostafa, President, Navmatica Corporation
CEU .8
Advanced: Member - $235, Nonmember - $335, Student Member - $125
Onsite: Member - $260, Nonmember - $360, Student Member - $140

Room: Laurel C & D

INTERMEDIATE WORKSHOP
Georeferencing is defined as the science and art of referencing remotely sensed data to a local mapping frame of reference.  Traditionally, this has been done using photogrammetry, ground truth and various forms of triangulation, resulting in the production of quality mapping products since as early as World War II. However, even at that time, there was speculation about the possibility of using onboard sensors to directly georeference images to improve the productivity of photogrammetric mapping. This concept was further discussed in the 1970s and 1980s, where the measuring sensors were labeled as “Auxiliary Sensors” by the photogrammetric community. However it was not until the advent GPS in the 1980’s that a practical solution appeared possible. In 1984, the University of Calgary in Canada conducted the first experiment using GPS onboard a survey aircraft to measure the camera location at the moment of exposure, revealing the enormous potential of this new technology.  The 1990s saw the use of Kinematic GPS with GPS-assisted Aerotriangulation (AT) become standard, and the appearance of the first GNSS-Aided Inertial systems being tested to augment or even replace AT altogether. By the late 1990s, GNSS-Inertial systems were themselves proven to be commercially viable methods of georeferencing, driven in part by the demands of new types of sensors such as LIDAR, digital line scanners and SAR where AT was not practical. Nowadays, direct georeferencing using GNSS-Inertial is a standard method of georeferencing data collected on mobile platforms.

This workshop will focus on the underlying concepts of georeferencing using different methods and sensors for different applications. Practical examples from real world projects are used extensively to illustrate the pros and cons of each method or sensor assembly. This workshop is intended for the ASPRS mapping professionals from either technical or business background. The topics will be covered in this workshop:

1.    Photogrammetry: The Concepts

  • Basic Geometry
  • Space Resection/intersection
  • Collinearity & Co-planarity
  • Relative & Absolute Orientation
  • Aerotriangulation

2.    GNSS and Inertial Sensors

  • GNSS basics
  • Inertial Basics
  • GNSS-Inertial Integration
  • Accuracy Aspects
  • Best practice for GNSS-Inertial Data processing

3.    Direct Georeferencing

  • Basic Concepts
  • Applications to Mobile Sensors
  • Quality Control
  • Best Practice

4.    Applications in Mobile Mapping

  • Special Airborne Applications
  • Land Applications
  • Marine Applications
  • Data Integration

5.    Future Trends

  • GNSS
  • Inertial Sensors
  • SLAM
  • Integrated Sensor Orientation - Redux


Workshop #2 - Object-Based Image Analysis
Sunday, March 24, 2013 (7:45 am to 5:15 pm)
Jarlath O'Neil-Dunne, University of Vermont and Keith Pelletier, University of Minnesota
CEU .8
Advanced: Member - $235, Nonmember - $335, Student Member - $125
Onsite: Member - $260, Nonmember - $360, Student Member - $140

Room: Kent B & C

ADVANCED WORKSHOP

This full-day, advanced workshop is designed to help participants harness the true power of object-based image analysis (OBIA). It is recommended that participants have a strong foundation in remote sensing and GIS, and at least some exposure to OBIA. This workshop is particularly well suited to individuals who are finding it difficult to extract information from the latest generation of high-resolution imaging and LiDAR sensors using OBIA techniques. Specific emphasis in this workshop will be paid to moving beyond the standard “segment and classify” approach that is typically employed in most OBIA projects, to an iterative workflow that better mimics the type of mapping carried out by human analysts by fully incorporating the spectral, geometric, and contextual information present in an image. Through a series of lectures, demonstrations, and hands-on exercises, participants will be exposed to the methods that will enable them to build effective and efficient OBIA routines.

The workshop will be divided into four parts. In the first part, the theoretical foundation for the effective application of OBIA technology will be laid out by drawing from the remote sensing, neurobiology, and cognitive sciences literature. This will be followed by a review of the current approaches to OBIA, with particular attention to some of the pitfalls that often prevent OBIA technology from being applied to its full potential. The second part will focus on effective approaches to and best practices for object-based feature extraction, including a thorough review of segmentation algorithms. The third part will cover more advanced topics, including: 1) image object fusion, 2) pattern recognition, 3) morphological routines, and 4) context-based classification. The workshop will conclude with recommendations on how to design and deploy enterprise OBIA systems capable of processing of datasets containing billions of pixels.

Demonstrations and exercises will make use of a broad range of remotely sensed (e.g. imagery and LiDAR) datasets and a particular focus in the exercises will be integrating remotely sensed and thematic datasets in an OBIA context. Participants are encouraged to bring their own computers to use during the hands-on exercises. OBIA software will be provided (requires Windows XP, Vista, or 7).

 



Workshop #3 - Lidar for Terrain and Vegetation Mapping
Sunday, March 24, 2013 (7:45 am to 5:15 pm)
Qi Chen, University of Hawaii at Manoa
CEU .8
Advanced: Member - $235, Nonmember - $335, Student Member - $125
Onsite: Member - $260, Nonmember - $360, Student Member - $140

Room: Laurel A & B

INTERMEDIATE WORKSHOP

This workshop is to introduce the basic concepts of Lidar, the popular and innovative methods for Lidar data processing and information extraction, with a focus on terrain mapping and forest studies. The attendants will learn 1) the principles of Lidar systems, 2) the typical Lidar systems, sensors, software, data, and applications, 3) the general procedure for processing airborne lidar data, 4) the popular and innovative methods for Lidar data filtering and terrain mapping for both urban and vegetated areas, 5) an overview of methods for extracting forest information at the stand and individual-tree levels, 6) an introduction of ground-based Lidar, 7) the application of satellite GLAS data for forest mapping, and 8) the remaining challenges of Lidar data processing and the advices of finishing your Lidar projects.

I.    Introduction:

  • Principle of lidar: discrete-return vs. waveform lidar
  • LiDAR platforms
  • Current developments of lidar and applications.

II.    Airborne LiDAR Systems, Sensors and Data Formats

  • Key concepts of airborne LiDAR systems
  • ASCII format vs. .LAS binary format

III.    The General Procedure of LiDAR Data Processing and Information Extraction

IV.    Filtering Point Cloud for Bare Earth Generation

  • Slope-based methods
  • Surface fitting methods
  • Morphological methods

V.    Mapping 3D Vegetation Structure

  • Individual-tree information extraction
  • Stand-level forest information extraction
  • Data fusion with optical imagery
  • Discussions of airborne LiDAR data for regional forest inventory

VI.    Ground-based LiDAR

VII.    Satellite LiDAR (GLAS: Geoscience Laser Altimeter System)

  • Introduction to GLAS
  • Elevation retrieval from GLAS
  • Regional and global-scale forest mapping with GLAS

VIII.    Tiffs: A Toolbox for LiDAR Data Filtering and Forest Studies

IX.    Case Studies:

  • Wildlife-habitat analysis
  • Ecological modeling

 




Monday, March 25, 2013

All of the workshops from here below will be held on Monday, March 25, 2013. Please pay close attention to the time of the workshops.


Workshop #6 - Unmanned Aerial System (UAS) Fundamentals
Monday, March 25, 2013 (7:45 am to 5:15 pm)
Kevin Gambold and Ed Freeborn, Unmanned Experts LLC
CEU .8
Advanced: Member - $235, Nonmember - $335, Student Member - $125
Onsite: Member - $260, Nonmember - $360, Student Member - $140

Room: Essex B & C

INTERMEDIATE WORKSHOP
The civilian aviation sector of unmanned aerial vehicles (UAV) and systems (UAS) is rapidly expanding, and is predicted to match the successful military application of UAVs. Recent studies have drawn up over 53 different mission types for civilian UAS, grouped into 5 mission sets of Survey, Law Enforcement, Border Patrol, Communications and Disaster Relief.
Companies are looking to this area to solve specific operational problems, using the traditional strengths of UAS over manned platforms, epitomized by the phrase ‘the 3 Ds: Dull, Dirty and Dangerous’.
This UAS Fundamentals Workshop was designed to provide experienced airborne photogrammetry and remote sensing operators, technologists, and scientists with an understanding of UAVs / UAS that goes beyond an introductory level, and allows them to speak knowledgeably of this area to their management, customers, and peers.

This day-long instructional program includes:

  • Overview; UAS Terminology and Classification; UAS Roles and Mission Sets
  • Control Systems; Data Links; Hardware
  • Payloads: EO/IR/LLTV/SAR/GMTI/Hyperspectral
  • Concept of Operations; Launch Recovery Systems; Communications
  • Deployment Considerations; Future Employment of UAS

Our instructors have extensive operational UAS experience and have delivered leading-edge UAS training materials to a wide spectrum of audiences.

This course assumes that attendees have an intermediate to advanced understanding of airborne operations, and a basic understanding of photogrammetric and remote sensing principles that have their equivalents in military intelligence, surveillance, and reconnaissance (ISR) fundamentals.


 

Workshop #7 - Photogrammetric Processing: Surface Model and Orthophotograph
Monday, March 25, 2013 (7:45 am to 5:15 pm)
Jennifer Nix and Jon Proctor, DigitalGlobe Inc.
CEU .8
Advanced: Member - $235, Nonmember - $335, Student Member - $125
Onsite: Member - $260, Nonmember - $360, Student Member - $140

Room:Laurel C & D

INTERMEDIATE WORKSHOP
This workshop is designed to walk the participants through a complete photogrammetric cycle while identifying issues, concerns, and successes in projects. This workshop is built around each of the major fundamental cycles of photogrammetry.
Image Collection- We will begin with the simple review of stereo imagery. Creating optimal stereo is easy once the three major stereo angles (Convergence Angle, Asymmetry Angle, and Bisector Elevation Angle) are acquired within a specified tolerance. We will show and describe each of the three stereo angles. We also discuss the effect of going outside the angle tolerance does to the parallax and accuracy of the end product.

Triangulation- Next we will review the importance of an accurate and successful triangulation report and how that applies to both surface modeling and the final Orthophoto. We will identify what makes a good ground control point and tie point and how to apply it in a photogrammetric bundle.  Illustration will be presented on the effects of a bad bundle point and how it will skew the data and the accuracy of a project.

DEM Generation - Once the stereo mates and an ample triangulation solution have been identified, an accurate Digital Elevation Model, Digital Terrain Model, Digital Surface Model, feature extractions, and 3D models can be created.  We will discuss post spacing, contour intervals, and terrain enhancing techniques to aid in the rectification of the imagery. The end user will leave the workshop knowing the differences between Digital Elevation Models, Digital Terrain Models, and Digital Surface Models. We will talk about the pros and cons of each and how they apply to creating a successful and accurate orthophoto.

Orthophotography- We will address the process of correcting imagery for distortion using elevation data and a camera model information so that the scale variation corresponds to a map projection throughout the image. Mosaic cutlines and cloud patching technics will be shared.

Ortho Accuracy Assessment - We will also discuss terrain displacement, quality assurance, quality control, direct ranking, and troubleshooting techniques if areas need to be corrected. We will define the differences between accuracy vs. precision, RMSE vs. CE90, and RMSExy vs. RMSEr. We will talk about variation in sample size and how it will affect your accuracy reporting.  

Each photogrammetric process will be described at a beginning to an intermediate level. The audience member should have some familiarity with the photogrammetric process. Many examples will be given to help emphasize and help visualize the photogrammetric process. Workshop examples are based on actual projects results. The audience will be encouraged to share their successes and lessons learned in their own Surface Modeling and Orthophoto experience.



Workshop #9 - Calibrating Film and Digital Sensors for Today’s Geo-Spatial Business
Monday, March 25, 2013 (7:45 am to 12:15 pm)
Dr. Qassim Abdullah, Fugro EarthData, Inc and Don Light, CP, Rochester Institute of Technology

CEU .4
Advanced: Member - $180, Nonmember - $280, Student Member - $90
Onsite: Member - $200, Nonmember - $300, Student Member - $100

Room: Laurel A & B, 4th Floor

INTERMEDIATE WORKSHOP

The workshop introduces important topics related to the calibration process of film and digital sensors including the Mathematics and techniques for data acquisition.

Among the topics are:

  1. What is camera calibration and why is it necessary?
  2. An overview of different architectures for digital sensors and their geometry;
  3. Procedures and mathematical models employed in calibrating digital sensors;
  4. Self calibration techniques as practiced today in the aerial imaging industry;
  5. Design and  illustration of indoor and in situ calibration fields;
  6. Typical sensor calibration reports;
  7. Agencies and companies providing sensor calibration;
  8. Commercially available software for sensor calibration.


Workshop #11 - LiDAR Waveform: The Potential and Benefits for Topographic Mapping
Monday, March 25, 2013 (12:45 pm to 5:15 pm)
Charles K. Toth, PhD, Center for Mapping, The Ohio State University and Nora Csanyi May, PhD, Fugro EarthData, Inc.
CEU .4
Advanced: Member - $180, Nonmember - $280, Student Member - $90
Onsite: Member - $200, Nonmember - $300, Student Member - $100

Room: Laurel A & B

INTERMEDIATE WORKSHOP

Intended audience:
In general, people are involved in all aspects of LiDAR. The proposed workshop is primarily beneficial to LiDAR data providers, both who have already started to look into full waveform applications or those who are just about to explore this emerging technology. In addition, government program managers and decision-makers should also find this workshop valuable.

This workshop will provide an introduction to LiDAR waveform data concepts and processing. Participants are expected to have basic understanding of LiDAR technology. The structure of this workshop will be the following:

1.    Introduction to LiDAR waveform data
a.    What is LiDAR waveform data?
b.    Short history on the evolution of waveform data
c.    The characterization of waveform data

2.    Acquiring LiDAR waveform data
a.    Large footprint systems
b.    Small footprint pulsed LiDAR systems

3.    Real-time processing of LiDAR waveform data
a.    Return and intensity signal detection (advantage/disadvantage of waveform vs. discrete returns)
b.    Compression of LiDAR waveform data
c.    Storing LiDAR waveform data

4.    Post-processing of LiDAR waveform data
a.    General analysis of waveform data; typical waveforms
b.    Already existing applications using LiDAR waveform data
c.    Emerging applications, including land-cover (object) classification, better error characterization, etc.

5.    Summary and future trends
a.    Existing systems
b.    Outlook on market developments

 

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