73191 - Digital Mapping and GIS

Learning outcomes

The course aims to examine in depth the aspects of classical and digital cartography and provides elements related to the modern geomatic techniques for the monitoring, representation and analysis of the territory. The Geographic Information Systems are introduced and the current techniques for surveying and processing data for cadastral purposes are described.

Course contents

Cartography

Cartographic Mapping. Generality on the problem of representation. Deformation of a map. Sustainable deformations for a map at scale 1:n. Analytical approach to cartographic mapping.

The italian cartography. Regional technical and big scale cartography. Regional topographic database.

Digital data representation: raster and vector form and some exchange standard format.

Digitalization and scanning of existing cartography.

Georeferencing process. Principal transformation models useful to georeferencing and parameters estimate method.

Photogrammetry for the production of digital cartography.

Elements of photogrammetry and laser scanning. Coordinate systems in photogrammetry. The central projection and projective transformation. The "normal case" in stereopair processing; evaluations of errors.

Photographic equipment and techniques (analogic and digital systems), color theory. Geometrical and radiometrical characteristics for digital acquisition, digital images, image processing and analysis. Metric and semi-metric film-based cameras.

Interior orientation. The calibration of non metric digital cameras.

Exterior orientation: of a single image, of a stereopair in two stages, of a stereopair in a single stage. The survey of the Ground Control Points. The Photogrammetric Triangulation by independent models and by bundle block adjustment.

The photogrammetric restitution by means of stereoscopic and monoscopic digital photogrammetric workstations; rectification of digital images.

The digital images and the image matching procedures.

Numerical cartography

General characteristics of numerical cartography.

Nominal scale concept. Metrical contents. Informative contents. Inventory of conventional signs.

Phases of digital map production

Codification, production, maintenance and updating of numerical technical cartography.

Geographic Information Systems

GIS Introduction and general information. Models. Functionalities. Geometrical component and alphanumeric data.

Geographical data management through a GIS system.

QGIS software presentation and practice.

Practice lessons

Interpretation of coordinates on cartography maps on different scale.

Computer practices: production of digital cartography using semiautomatic and automatic digital photogrammetry.

Computer practices: usage of a largely used free and open source GIS software (QGIS).

Readings/Bibliography

Scientific publications, lectures notes and slides in digital form.

Bibliographic references for home study and further reading materials:

Kraus, K., 1998. Fotogrammetria vol.1 Teoria e applicazioni. Editore: Levrotto e Bella. ISBN: 888218028X.

Folloni, G., 1982. Principi di Topografia.

Migliaccio, F., Carrion, D., 2016. Sistemi Informativi Territoriali. Principi e applicazioni. UTET Università Editore. EAN: 9788860084750.

Teaching methods

Lectures and exercises in Laboratory or on personal computer using Open-Source software.

Analysis and discussion using examples of real cases.

Assessment methods

The final exam verifies the acquisition of the expected knowledge and skills by carrying out a written and oral test, without the help of notes or books.

Following the national emergency state of 31 January 2020 and the issuing of D.L. February 23 2020 n. 6, containing urgent measures regarding the containment and management of the epidemiological emergency from COVID 19, and in order to give continuity to the verification processes, the exam can be taken at the students' homes in online mode.

Before making the test, it is necessary to install software on your phone that can produce pdf files such as CamScanner (https://www.camscanner.com/) or TapScanner (https: //tap-scanner.it.aptoide. com / app).

The written test consists of two tasks to be carried out in sequence.

The first written test consists of 10 multiple-choice questions of which only one is correct. Each correct answer gives 3/30. Wrong answers give 0.

The test must be carried out within the indicated time range. From the moment of the beginning it lasts 30 minutes.

Once you move on to the next question, you will not be able to go back.

At the end of the test and at the end of the time, the overall score will be displayed and the correct answers relating to each question will be indicated.

The second written test consists of two open questions that give 15/30 each.

The student must answer the questions by writing with a pen or marker on white sheets. Each sheet must be numbered and must have the candidate's name, surname and registration number.

The test lasts 40 minutes.

At the end of the test the student must produce a scan of every single written sheet with his mobile phone. The scans must then be uploaded as an answer to the questions.

The oral exam will be held at the end of the written test in alphabetical order.

At the time of the test, students must have an identification document (Identity Card or Driving License or Passport) and a badge, and show them to the examiners. In addition, the aforementioned documents must be scanned before the test, so the candidate has a pdf file available with the scan of a document and badge (scan both sides). This pdf must be uploaded together with the pdf of the answers to the questions.

In order to take the exam, it is necessary to have all the tools listed below:

• a stable internet network;
• a desktop or notebook (hereafter PC) connected to the electricity network and to Internet.
• a smartphone or tablet (hereafter mobile device) connected to the electricity network and to Internet, equipped with a video camera, which will be used as a recognition and means of control by the examiners inside the Virtual Classrooms
• the ZOOM app that allows video meeting and access to the virtual classroom must be installed on the mobile device;
• white sheets and a pen.
• the possibility of using a quiet environment in one's own home, free from other people and correctly lit, in which to set up a space with the elements listed above.

The oral exam consists of an in-depth study aimed at ascertaining the acquired knowledge. Passing the exam will be guaranteed to students who demonstrate mastery and operational ability in relation to the key concepts illustrated in the course.

Teaching tools

A significant part of the course is organized by practical activities on the field and in the laboratory or on personal computer, by means of open source software.

Office hours

See the website of Valentina Alena Girelli

See the website of Antonio Zanutta