Education

Mapping using high-resolution satellite imagery
Dates:
16 - 27 March 2015

Instructor: Dr Daniela Poli, Terra Messflug GmbH, e-mail: d.poli@terra-messflug.at

Target audience: PhD and Master students involved in remote sensing, photogrammetry and digital cartography, staff from national mapping agencies, public authorities and third parties in charge of mapping using satellite imagery.

Course objective: The course will provide the theoretical background on image acquisition from spaceborne optical sensors and give the instruments for image geometric processing and 2D/3D information mapping. Course participants will learn the characteristics of high resolution (HR) and very-high resolution (VHR) images, the processing pipeline for the production of 2D/3D georeferenced products from single and stereo images, and their use for mapping. Theory will be demonstrated with examples and exercises on real data from latest satellite missions.

Course outline: The pre-course during the kick-off seminar will give an overview on the characteristics of high and very high resolution satellite imagery and an introduction to the workflow for 2D/3D information extraction and mapping. Then the course will include lecture materials, reference literature, demonstrations, assignments and self-evaluation questionnaires. The content of the course will be divided into three modules.

Module 1. Introduction to image acquisition from spaceborne platforms
The module describes the principles of optical imagery acquisition from spaceborne platforms. The characteristics of spacecrafts, sensors and images will be analyzed with regard to the mapping applications. Sample material will help the participants to get familiar with the properties of HR and VHR satellite imagery. Self-evaluation tests will be offered at the end of the course – 8 hours.

Module 2. Geometric processing of satellite images
The module explains the workflow of rigorous geometric processing of single and stereo satellite images. The steps include: radiometric pre-processing, image georeferencing, image matching and digital surface modeling, orthorectification. State-of-the-art commercial and open source software packages will be discussed and compared. The theoretical part will be supported by practical exercise using real data from latest satellite missions – 16 hours.

Module 3. Information extraction and mapping
The module presents the instruments for 2D and 3D information extraction and quality assessment. Applications in web global mapping, cartography, land monitoring, disaster mapping and others will be demonstrated. Examples will be used to assess the potential of HR and VHR satellite imagery for mapping applications – 8 hours.

Change detection in High Resolution Land Use/Cover Geodatabases
Tutor:
Dr Clément Mallet
Dates:
7 - 17 April 2015

Instructor: Dr. Clément Mallet, IGN France, e-mail: clement.mallet@ign.fr

Target audience: PhD and Master students involved in remote sensing, photogrammetry and digital cartography, staff from national mapping agencies, public authorities and third parties in charge of mapping using satellite imagery.

Course objective: The course will present state-of-the-art techniques for change detection (CD) in land-cover geospatial databases. The first part of the lecture will be dedicated to classification (feature extraction and labeling techniques) and the second part will focus on how to apply such techniques for CD issues. Both technical aspects and practical issues will be described during this course. The relevance of various remote sensing data will be discussed before providing solutions for 2D database change detection and update. In addition, the participants will learn how to benefit from various data sources and how to take advantage of the multiple spatial, spectral, and temporal resolutions of the input data.

Course outline:

Module 1. General assessments
The aim is to present the various remote sensing data sources as well as the various spatial and temporal scales of analysis for change detection. Questions like why to detect changes or which kinds of change can be detected are going to be answered. Land-Use/Land-Cover (LCLU) monitoring is presented as well as the various kinds of existing LCLU geodatabases.

  • Remote Sensing data sources
  • Spatial and Temporal scales of analysis
  • Main applications
  • Outlook on main change detection methods

Module 2. Image-to-Image 2D change detection

  • First, focus will be made on the simple radiometric comparison of images (the so-called pre-classification). Additional lecture and papers are also provided.
  • Secondly, a lecture on feature extraction from images is given since CD can be performed on other features that the raw channels of the images.
  • Thirdly, classification methods can be carried out on the various images and can be compared (post-classification).
  • Exercices will introduce you to both unsupervised and supervised methods on a single image, and two images and then to the post-processing techniques that should be carried out.

Module 3. Operational land-cover change detection

Techniques introduced in modules 1 and 2 will be presented in the operational frameworks of Spanish and German initiatives. In addition, practical solutions for improving CD results will be tested during exercices.

  • Which features are the best ones for a given problem ?
  • How to design efficient training sets for supervised classification ?

Module 4. 3D change detection
The relevance and the specificity of 3D change detection (i.e. Digital Surface Model vs. Digital Surface Model) will be introduced. Two main CD techniques will be detailed and followed by exercises enhancing which processing techniques should be adopted.

Module 5. Time-series Image Analysis

  • Benefit of image sequences for LC/LU mapping and change detection.
  • Outlook on existing methods for multitemporal change detection.

Exercices on how to benefit from multiple images to improve CD results.

RPAS in land survey – theory and practice
Dates:
27 April - 8 May 2015

Instructors:

Target audience: PhD and Master students involved in geomatics and photogrammetry, staff from national mapping agencies, public authorities and third parties who are planning to or actually working with an unmanned aerial system.

Course objective: UAS photogrammetry can fill a major gap in the spatial data collection and open up new markets for additional image-based spatial data. The course will give an insight of the potential of unmanned aerial systems for geomatics applications and the theory behind it. In aerial photogrammetry, the first question is always about camera used. For a photogrammetric UAS project however, the question of the appropriate carrier platform is first to answer. Independently from the carrier platform photogrammetric UAS projects follow a processing chain and the achievable accuracy is related to several issues, which are important to know. The course will also illustrate the topic of flight regulations and getting permission to fly.

Course outline: The kick-off seminar will give an overview of workflows for photogrammetric UAS projects as well as activate course participants to realize possibilities of UAS for geomatics applications and beyond. The course is divided into four different parts. Special focus will be laid on the processing of image data from RPAS. Highlight of the course is the hands-on practical work with Pix4D software to explore the photogrammetric potential of UAS surveys with real data. UAS are using airspace and may influence privacy of other people. Therefore legal issues, the topic of flight regulations have to be discussed. The e-learning part of the course will include lecture materials, reference literature and assignments, including practical work using real life data and up-to-date photogrammetric software for UAS, self-evaluation questionnaires and tutoring.

Module 1. Introduction and basic principles of UAS
In the introduction several definitions and classifications of UAS types will be given. Common UAS imaging sensors (digital cameras, LiDAR) as well as navigation sensors will be discussed. Due to weight restrictions commonly low-cost camera are used for UAS, which have special characteristics in terms of image quality etc. A comparison to classical photogrammetric cameras will be provided. GPS and recently RTK-GPS are very important UAS navigation sensors.

Module 2. UAS project design and flight planning
Flight planning of photogrammetric UAS projects is different from conventional airborne projects, thus offering a large degree of flexibility, e.g. combing nadir and oblique imagery. However the achievable accuracy of the final product is defined be design of the aerial survey. Important accuracy factors, such as the image scale and overlap, properties of a digital camera, the layout of ground control points and much more are considered here.

Module 3. UAS data processing - from images to 3D-information
The processing of UAS data follows a common workflow using several up to date photogrammetric techniques, which will be described in detail. Starting from successful flight sensor orientation information is available, but how valuable is this information? Camera calibration is a standard procedure in close range photogrammetry but also very important in UAS photogrammetry. Processing of RPAS image blocks relies on the concepts of computer vision. Structure from motion (SfM) is applied for the image block orientation and will be introduced in this course. As results 3D-point clouds are generated by means of dense image matching algorithms. Beside the point cloud orthophotos and true orthophotos are also common information products.

Module 4. Legal aspects and general remarks
Regulations for UAS vary quite significantly within Europe. Examples from different member states will be given with its pros and cons. Nevertheless there is a common road map for the integration of UAS into the common airspace, which will be discussed. High resolution imagery of objects and persons raises questions about privacy and other legal issues. At the end of the course the focus will be widened and several other applications and current developments of UAS, e.g. sense and avoid technologies using imaging and ranging sensors or UAS as a cargo platform in an unknown environment will be provided.

This course will kindly be supported by Pix4D, Lausanne – Switzerland. Each participant will receive a free month of Pix4Dmapper Pro UAS processing software (valued at EUR 260).

International Standards for Geographic Information
Dates:
8 - 19 June 2015

Instructor: Dr. Wolfgang Kresse, University of Applied Sciences Neubrandenburg, e-mail: kresse@hs-nb.de

Target audience: PhD students and people responsible for the design and the administration of geographic information systems, primarily in the public sector.

Course objective: The topic is primarily background information that helps to understand the foundation of modern geographic information systems, not least of the administrative systems such as INSPIRE. However, the practical part also demonstrates how standards are applied to the creation of new applications.

Course outline: The course will start with the kick-off seminar followed by a set of tasks that will be accomplished at home and discussed and finalized online via the Internet.

Module 1. The content of this module includes the characteristics of standards, standardization bodies, the relevance of standards, their original sources and the process towards final standards documents, the relation between standards, and the usage of standards in software development and legislation.

Module 2. The content of this module is a detailed discussion of a larger set of standards for geographic information. The topic begins with the reference model and infrastructure standards such as the conceptual schema language, continues with the basic standards regarding space and time as well as services, quality, rights and general metadata, and finally proceeds to implementation, web-mapping, and imagery. A small geoportal will be created while the focus is set on the demonstration and the analysis of the standards involved.

Module 3. The content of this module is the development of an application model, the derivation of an xml schema, and the development of a software interface for a r/w access.

Pre-course seminar EduServ13 (2015)
Tutor(s):
Pieter-Jan Put
Dates:
9 March 2015 - 10 March 2016

Pre-course seminar

Date: 9 -10 March 2015

Location: Bundesamt für Eich- und Vermessungswesen (BEV), Schiffamtsgasse 1- 3, Vienna, Austria 

 

Preliminary programme of the seminar

9 March 2015

9:00 -   9:30  Welcome addresses (M. Franzen, BEV, J. Crompvoets, EuroSDR)

9:30 - 12:00* Introduction to the course “Mapping using high-resolution satellite imagery”, D. Poli, Terra Messflug GmbH, Austria, Austria

12:00 - 13:30  Lunch

13:30 - 16:00* Introduction to the course “Change detection in High-Resolution land use/cover geodatabases”, C. Mallet, IGN, France

16:30 - 17:30  Presentation of the Moodle Learning Management System, M. Potůčková, Charles University in Prague, Czech Republic

19:00 -            Social event

 

10 March 2015

9:30 - 12:00* Introduction to the course “RPAS in land survey – theory and practice”, G. Grenzdörffer, University of Rostock, Germany and M. Cramer, University of Stuttgart, Germany

12:00 - 13:30  Lunch

13:30 - 16:00* Introduction to the course “Application of geospatial standards of ISO – ISO/TC 211”, W.Kresse, University of Applied Sciences, Neubrandenburg, Germany

16:00 - 16:30  Closing address and evaluation of the seminar

* Each block contains a 90 min. introduction to the topic, 30 min. discussion and 30 min. coffee break.

The venue of the seminar is at the Federal Office of Metrology and Surveying (BEV) in the inner city of Vienna, Schiffamtsgasse 1 – 3. It is easily accessible by the Metro - the exit of the lines U2 and U4 (Station Schottenring, Exit Herminengasse) is about 100m away from the BEV building (see a map for orientation).
 

Accommodation:

Meininger Hotels – Vienna Downtown Sissi, A-1020, Schiffamtsgasse 15

http://www.meininger-hotels.com

Please refer in the booking procedure to "BEV" and you will get 10% less to the offical rate.

 

Links for the local transportation in Vienna:

Metro, tram and bus: http://www.wienerlinien.at

Train or bus from the airport to the city centre: http://www.oebb.at

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