Ing - Civ (Mag.)(ord. 270) - MI (440) INGEGNERIA PER L'AMBIENTE E IL TERRITORIO

*

A

ZZZZ

097464 - PHOTOGRAMMETRY AND PHOTOINTERPRETATION

Ing - Civ (Mag.)(ord. 270) - MI (488) INGEGNERIA CIVILE - CIVIL ENGINEERING

*

A

ZZZZ

051281 - CLOSE-RANGE AND DRONE IMAGE-BASED 3D MODELLING

097562 - PHOTOGRAMMETRY

097563 - ELEMENTS OF PHOTOGRAMMETRY

051278 - PHOTOGRAMMETRY AND DRONE SURVEYING

Ing - Civ (Mag.)(ord. 270) - MI (489) INGEGNERIA PER L'AMBIENTE E IL TERRITORIO - ENVIRONMENTAL AND LAND PLANNING ENGINEERING

*

A

ZZZZ

051278 - PHOTOGRAMMETRY AND DRONE SURVEYING

051279 - 3D MODELLING AND MAPPING FROM DRONE IMAGES

051024 - DIGITAL IMAGE ANALISYS

097464 - PHOTOGRAMMETRY AND PHOTOINTERPRETATION

Obiettivi dell'insegnamento

The goal of the course is to provide students with the mathematical background and the practical skill to model 3D surfaces by photogrammetric techniques. Students will be familiar with digital images acquired from terrestrial, drone, airplane and satellite surveys and with software packages for 3D modelling and mapping.

Risultati di apprendimento attesi

Lectures will allow students to: - describe the geometry of a photogrammetric survey; - estimate the orientation parameters for an object 3D reconstruction; - understand the algorithms for digital image analysis and in particular for image matching; - know the photogrammetric products and their productive process; - approach some research and advanced topics of photogrammetry.

Laboratory activities will allow students to: - calibrate a digital camera for a photogrammetric survey; - use photogrammetric software packages for 2D/3D modelling; - design, perform and process a drone survey; - apply photogrammetric techniques for kinematic positioning.

Argomenti trattati

1. FUNDAMENTAL EQUATIONS OF PHOTOGRAMMETRY: Review of least-squares adjustment. Geometrical transformations in a plane and in space, 2D and 3D rotation matrices and their properties, central projection and collinearity equations. Normal case of stereoscopy: equations for the computation of the object coordinates and their precision. Internal orientation. External orientation of a single photo (space resection), of a pair of photos (relative and absolute orientation), of a block of photos (aerial triangulation by independent models and bundle block adjustment).

2. DIGITAL PHOTOGRAMMETRY: The fundamental principles: definition of a digital image, formats and compression algorithms. The fundamental techniques of digital photogrammetry: image enhancement and filtering, resampling, generation of image pyramids. The algorithms for the automatic determination of homologous points: interest operators, algorithms of image correlation/matching (feature-based, area-based, relational matching). Automatization of the orientation procedures. Automatic aerial triangulation.

3. THE PRODUCTS OF PHOTOGRAMMETRY AND THEIR PRODUCTIVE PROCESS: Stereoscopic restitution. Digital photogrammetric workstations. Digital terrain models (DTM), digital surface models (DSM) and their generation by means of photogrammetric techniques or by LiDAR. Point clouds and their interpolation for 3D object modelling. Orthophotos, “true orthophotos” and digital photo-planes. The photogrammetric production of numerical cartography and spatial databases.

4. THE SENSORS FOR DATA ACQUISITION: Aerial analogical photogrammetric cameras: image characteristics, analysis of the distortions and calibration parameters. Aerial digital cameras: operation principle (frame cameras and linear array sensors), the basic sensors (CCD and CMOS). Commercial digital cameras for unmanned aerial vehicles (UAV). INS/GPS systems and their integrated use inside the aerial triangulation. Photogrammetric scanners. LiDAR sensors.

5. ADVANCED TOPICS: Terrestrial (close-range) photogrammetry. Remote sensing principles and satellite photogrammetry. Photogrammetry using drones (UAV). Inverse photogrammetry for navigation in an urban environment. Fundamental principles of computer vision.

UAV LABORATORY ACTIVITIES: - Flight planning of a photogrammetric survey by UAV; - Participation to an outdoor UAV survey, acquiring digital images with a commercial camera mounted on the aircraft and collecting ground control points by GPS receivers; - Processing of the data acquired during the UAV survey to compute the DSM and the orthophoto of the observed surface by using different photogrammetric software packages.

OTHER LABORATORY ACTIVITIES - Photogrammetric restitution by using a digital photogrammetric workstation; - Digital camera calibration, 2D modelling of a building facade and 3D modelling of a simple object (students are invited to use their own cameras).

Concerning the programme subdivision, the 6 CFU course deals with the fundamental equations of photogrammetry, the digital photogrammetry and the products of photogrammetry; among the advanced topics, it includes the close-range and UAV photogrammetry with the corresponding laboratory activities. The 8 CFU course also includes the discussion on the sensors for data acquisition, as well as the advanced topics related to satellite photogrammetry; a wider range of photogrammetric software packages are shown during the laboratory activities. The 10 CFU course covers the whole programme.

Prerequisiti

Students are required to know the basics of linear algebra and least-squares adjustment.

Modalità di valutazione

The exam consists of two parts: 1. an oral examination on the course topics; 2. a practical project to be done individually or in a team.

In addition to delivering a written report, students are required to give an oral presentation on the development and the results of the practical project. In case of teamwork, the cooperation ability will be evaluated too.

The practical project can be replaced by deliveries on the laboratory activities performed during the course.

Bibliografia

K. Kraus, Fotogrammetria, Editore: Levrotto & Bella, Anno edizione: 1998, ISBN: 9788882180287 Note:

traduzione di S. Dequal

K. Kraus, Photogrammetry - Volume 1: Fundamentals and Standard Processes, Editore: Dümmler, Anno edizione: 1997, ISBN: 3427786846 Note:

translated by P. Stewardson

K. Kraus, Photogrammetry - Volume 2: Advanced Methods and Applications, Editore: Dümmler, Anno edizione: 1997, ISBN: 3427786943 Note:

translated by P. Stewardson

K. Kraus, Photogrammetry - Geometry from Images and Laser Scans, Editore: Walter De Gruyter, Anno edizione: 2007, ISBN: 9783110190076 Note:

translated by I. Harley and S. Kyle

E.M. Mikhail, J.S. Bethel and J.C. McGlone, Introduction to Modern Photogrammetry, Editore: John Wiley & Sons, Anno edizione: 2001, ISBN: 9780471309246
T. Luhmann, S. Robson, S. Kyle and I. Harley, Close Range Photogrammetry - Principles, Techniques and Applications , Editore: Whittles Publishing, Anno edizione: 2006, ISBN: 9781870325509
H. Eisenbeiss, UAV Photogrammetry, Editore: ETH Zurich, Anno edizione: 2009, ISBN: 9783906467863
W. Foerstner, B.P. Wrobel, Photogrammetric Computer Vision - Statistics, Geometry, Orientation and Reconstruction, Editore: Springer, Anno edizione: 2016, ISBN: 9783319115498

Forme didattiche

Tipo Forma Didattica

Ore di attività svolte in aula

(hh:mm)

Ore di studio autonome

(hh:mm)

Lezione

55:00

82:30

Esercitazione

10:00

15:00

Laboratorio Informatico

25:00

37:30

Laboratorio Sperimentale

10:00

15:00

Laboratorio Di Progetto

0:00

0:00

Totale

100:00

150:00

Informazioni in lingua inglese a supporto dell'internazionalizzazione

Insegnamento erogato in lingua
Inglese

Disponibilità di materiale didattico/slides in lingua inglese

Disponibilità di libri di testo/bibliografia in lingua inglese

Possibilità di sostenere l'esame in lingua inglese

Disponibilità di supporto didattico in lingua inglese

Note Docente

Lectures notes and slides can be downloaded from the BeeP online platform.