Joensuu Summer School on Optics 2021

31st Joensuu Summer School on Optics 2021: Hyperspectral Imaging

The Summer School Hyperspectral Imaging teaches topics related to spectral Poster for Joensuu Summer School on Optics 2021imaging: theory, devices, processing of the spectral data, and application examples. Lectures include color theory, spectral cameras and their realizations, data processing, and applications. The Summer School consists of lectures from experts in the academic field as well as representatives of companies.

You will learn theoretical background of hyperspectral imaging: color, color vision, color spectra, data processing, and computational requirements. Case studies on the applications in medicine and biology and imaging with spectral cameras.

When: 16.8.2021-20.8.2021
Where: Microsoft Teams
Duration: 1 week
Credit points:  2 ECTS
Teaching language: English
Level: BSc, MSc & PhD students
There is no course fee: The course is free of charge for everybody.

Learning outcomes: After the course, students will understand how spectral cameras are applied in science and research (medicine, industry, biology).

Student will understand the principles of operation of spectral cameras (line and filter based cameras such as Specim and Nuance), i.e. how spectral camera acquires 3D spectral cube. Students will understand what are spectra and spectroscopy and utilize this in different applications. They will understand spectral data formats (ENVI, TIFF) and learn how to handle this big data in Python. Student will learn basic principles of handling the spectral data: cropping, resizing, compressing and conversion. There is possibility of learning basic multivariate statistical analysis methods applied to spectral data (clustering, PCA etc).

Students will get and work on examples of spectral images from various application areas: medicine, biology, industry.

Content: Spectra, spectroscopy, spectral measurements, spectral camera, spectral image, spectral data, 3D spectral cube, Python, big data
Modes of study: Online lectures and exercises in Teams
Mandatory requirements: Google account; Windows PC (some software works only on Windows)
Highly recommended: Basic knowledge of programming: variables, loops, if else, 2D and 3D arrays; Basic knowledge of Python
Pass requirements and Evaluation criteria: Follow the lectures and return exercises; Fail/Pass based on small homework assignments
Recording: Lectures will not be recorded

Download the preliminary course agenda:
Summer School 2021 Agenda (Excel, time zone UTC+3)

Register free of charge at:

Contact persons: Juuso Uusimäki: and Noora Heikkilä:


Previous Summer School Courses

Joensuu Summer School on Optics

Joensuu Summer School on Optics courses since 1995:

1. Diffractive Optics, Dr. Frank Wyrowski and Prof. Toyohiko Yatagai, 2ov, 1995, 22 participants
2. Quantum Optics, Prof. Stig Stenholm, 2 ov, 1996, 15 participants
3. Optical Communication, Prof. Seppo Honkanen, 2 ov, 1996, 15 participants
4. Fourier-transform spectroscopy, Prof. Jyrki Kauppinen, 2ov, 1997, 23 participants
5. Optical System Design, Dr. Janusz Sadowski, 2 ov, 1998, 25 participants
6. Modern technologies in Optics and Optoelectronics, in cooperation with Infotech Oulu in Saariselkä, 2 ov, 1999, 35 participants
7. Crystal Optics, Prof. Alexei A. Kamshilin, 2 ov, 1999, 16 participants
8. Color and Color Image Analysis, Prof. Jussi Parkkinen, 2 ov. 2000, 43 participants
9. Classical Coherence Theory, Prof. Jari Turunen, 2 ov, 2000, 27 participants
10. Polarization of Light and Non-Linear Spectroscopy, Dr. Yuri Svirko, 2 ov, 2001, 21 participants
11. Engineering of Appearance Reproduction, Dr. Norimichi Tsumura, 2 ov, 2001, 12 participants
12. Introduction to Signal Analysis, Prof. Dinesh Kant Kumar, 2 ov, 2002, 19 participants
13. Optical Interferometry, Prof. I. Yamaguchi, 2 ov, 2002, 16 participants
14. A practical course in Optical Communications, Dr. Georg Mohs, 2 ov, 2003, 11 participants
15. Modern microscopy, Prof. Colin Sheppard, 2 ov, 2004, 13 participants
16. Design of Consumer Optics, Prof. Jyh-Long Chern, 4 ECTS, 2005, 27 parrticipants
17. Femtosecond laser micromachining, Prof. Peter Balling, 4 ECTS, 2006, 20 participants
18. Introduction to terahertz spectroscopy, Prof. Roy Shimano, 4 ECTS, 2007, 19 participants
19. Nanocarbon Photonics and Optoelectronics (NPO2008), 2008
20. Koli Workshop on Partial Electromagnetic Coherence and 3D Polarization, 2009
21. Summer School on Photonic Telecommunication Systems, Profs. Seppo Honkanen and Franko Küppers, 3 ECTS, 2010, 11 participants
22. Summer School on Color, Imaging and Information, Prof. David Foster, 3 ECTS, 2011, 29 participants
23. Quantum Light & Matter, Profs. Mackillo Kira and Ilkka Tittonen 4 ECTS, 2012, 12 participants
24. Tissue Optics and Measurements in Biophotonics, Dr Alexey Popov and Prof. Valery Tuchin, 2 ECTS, 2013, 30 participants
25. Optical Metrology and Fabrication, Prof David J Robertson, 2 ECTS, 2014, 20 participants
26. Printed Electronics and Photonics, Prof. Ghassan Jabbour, 2 ECTS, 2015, 21 participants
27. Organic Optoelectronic Devices, Prof. Alexander Zakhidov, 3 ECTS, 2016, 18 participants
28. Optical Engineering: Understanding Optical System by Experiments, Dr. Toralf Scharf and Dr. Myun-Sik Kim, EPFL, Switzerland, 3 ECTS, 2017, 22 participants
29. Methods and tools for effective Quality improvements using Lean and Six Sigma, Tero Ollikainen, 3 ECTS, 2018, 18 participants
30. Joensuu Summer School on Optics 2019: eXpeRience your reality, various lecturers, 2-5 ECTS, 2019, 52 participants
31. Cancelled: 31st Joensuu Summer School on Optics 2020: Hyperspectral Imaging