PHOTOGRAMMETRY AND REMOTE SENSING

PHOTOGRAMMETRY AND REMOTE SENSING

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Last update 09/05/2021 11:13
Code
95012
ACADEMIC YEAR
2021/2022
CREDITS
4 credits during the 2nd year of 10590 HYDROGRAPHY AND OCEANOGRAPHY (LM-75) GENOVA
SCIENTIFIC DISCIPLINARY SECTOR
ICAR/06
LANGUAGE
English
TEACHING LOCATION
GENOVA (HYDROGRAPHY AND OCEANOGRAPHY)
semester
1° Semester
modules
Teaching materials

OVERVIEW

The course provides the basic tools needed for the spatial knowledge of the territory, through main survey methods and their integrations in different reference frames and maps representations.

The course deepens the geomatic approach to the measurement issues following in the remote sensing way.

AIMS AND CONTENT

LEARNING OUTCOMES

The teaching provides the student with some basic concepts on remote sensing, in particular theoretical and practical tools for Photogrammetric, laser scanner tecniques and their integration. Images from different sensors, coming from satellites, aerial or Unmanned Aerial Vehicle, or even terrestrial survey, with the main focus on electromagnetic bands in the spectrum of the visible, are dealt. Particular attention is dedicated to the monitoring criteria. The analysis phase is applied by means of classification techniques in synergy with the course of Numerical Cartography. Several possible applications that will be addressed, to survey littoral area with its infrastructure or to tracking and analysis oceanographic applications.

AIMS AND LEARNING OUTCOMES

The course provides the basic tools of photogrammetry and laser scanner technique and their integration, properly framed in the reference system with a ground survey, in synergy with the course of Numerical Cartography.

Some insights about data processing and analysis will be addressed, in particular to design optimal measuring survey, to process measurement campaigns and to interpret the results.

Teaching methods

Lectures (26 hours) and practice (14 hours) related to the campaign survey, to the calculation and to the first critical analysis.

For the processing procedures, we give priority to the use free and open source software to provide to students.

The instrumental and numerical exercises are particularly useful in learning instrumental operating practices discussed in class, in order to the process the measurement campaigns and to the acquire the necessary sensitivity for its analysis. Both applications are needed to compile the technical report that is an integral part of the oral exam.

Theoretical lectures followed with practical lectures, held in in English.

SYLLABUS/CONTENT

Criteria and methods useful to obtain information about the object of the survey from the geometric and radiometric point of views will be discussed. Particular attention is dedicated to the monitoring criteria to observe the evolution of some parameters like morphology, volume, coastline and so on, for example, in a beach area.

 

 

Main methods of Remote sensing survey approach

Theoretical principles of the Photogrammetry and Laser scanner techniques are dealt, to obtain metrical and rdiometric information, properly integrated and framed in the reference system with a ground survey.

Analysis of the characteristics, advantages and limits of the main methods of survey and their integration will be illustrated, starting from the main experiences of the Laboratory of Geomatics of the Genoa University.

In particular, the optimization of the design of the survey through simulation techniques, the processing of survey campaigns measurements and the analysis of the results will be the main focus of the course.

The measurement campaign will lead to the drafting of a technical report to be carried out in small groups of students, in which critically analyze the survey and the resulting outputs. An example of possible applications, that may be subject to the survey campaign, is an integrated survey of a beach in the Genoa area, by photogrammetric, terrestrial laser scanner and/or Lidar survey by UAV (Unmanned Aerial Vehicle).

 

The informatics tools covered in the course will be integrated by open source software; together with the data obtained on the field and during practical lessons, they can be helpful for further analysis and a useful reference for personal study.

 

 

In more detail

 

Photogrammetry

Principles of analogic, analytical and digital Photogrammetry; Photogrammetric shoot and attitude parameters; Camera and self calibration objective parameters

 

Different approaches: 

Co-planarity and roto-translations equations (stereo model) for Internal, Relative and Absolute Orientation (step procedure); Co-linearity equations (monoscopic approach) for block adjustment; Structure For Motion approach (outline) in the digital Photogrammetry

 

Bundle adjustment and Tie Points, Ground Control Points (GCPs) and Check Points in the Aerial triangulation; Rotations (outline)

 

Non photogrammetric survey

Outlines of terrestrial laser scanner and LiDAR systems by UAV (Unmanned Aerial Vehicle) for the photogrammetry coastal survey

 

Integrated survey

Accuracy of the 3D products

 

Applications and products: contours lines, altimetric digital models, coastline map and digital ortho-images

 

Innovative tools for planning, analysis and management of UAV photogrammetric surveys and its integration with non-photogrammetric survey (like terrestrial Laser scanner and/or Lidar)

 

Integrated 3D surveys applied to maritime infrastructures and to the study of morphological/sedimentary dynamics of the seabed (examples).

 

RECOMMENDED READING/BIBLIOGRAPHY

Lecture notes and material provided by the teacher to the students using AulaWeb.

TEACHERS AND EXAM BOARD

Ricevimento: The teacher is available to answer questions at times to be agreed with students at the beginning of the class and by appointment, to be requested by e-mail.

LESSONS

Teaching methods

Lectures (26 hours) and practice (14 hours) related to the campaign survey, to the calculation and to the first critical analysis.

For the processing procedures, we give priority to the use free and open source software to provide to students.

The instrumental and numerical exercises are particularly useful in learning instrumental operating practices discussed in class, in order to the process the measurement campaigns and to the acquire the necessary sensitivity for its analysis. Both applications are needed to compile the technical report that is an integral part of the oral exam.

Theoretical lectures followed with practical lectures, held in in English.

LESSONS START

First semester (usually in October)

EXAMS

Exam description

Oral exam

Assessment methods

The examination starts from the presentation and discussion of the technical report prepared in small groups. During the exam, the knowledge of the theoretical concepts of the remote sensing approach, discussed during the course, will be assessed.