Universität Wien

052600 VU Signal and Image Processing (2024W)

Continuous assessment of course work
Tu 12.11. 11:30-13:00 Digital

Registration/Deregistration

Note: The time of your registration within the registration period has no effect on the allocation of places (no first come, first served).

Details

max. 50 participants
Language: English

Lecturers

Classes (iCal) - next class is marked with N

In the winter term, the course is primarily held online. Pre-recorded lectures are published on a weekly basis, typically on Fridays. There are no weekly in-person review sessions. Rather, individual review sessions are scheduled over the course of the semester to prepare and discuss the assignments and exams. Besides these review sessions, interactions between students and tutors are primarily via the discussion forum on Moodle.

  • Tuesday 01.10. 11:30 - 13:00 Digital
  • Wednesday 02.10. 15:00 - 16:30 Digital
  • Tuesday 08.10. 11:30 - 13:00 Digital
  • Wednesday 09.10. 15:00 - 16:30 Digital
  • Tuesday 15.10. 11:30 - 13:00 Digital
  • Wednesday 16.10. 15:00 - 16:30 Digital
  • Tuesday 22.10. 11:30 - 13:00 Digital
  • Wednesday 23.10. 15:00 - 16:30 Digital
  • Tuesday 29.10. 11:30 - 13:00 Digital
  • Wednesday 30.10. 15:00 - 16:30 Digital
  • Tuesday 05.11. 11:30 - 13:00 Digital
  • Wednesday 06.11. 15:00 - 16:30 Digital
  • Wednesday 13.11. 15:00 - 16:30 Digital
  • Tuesday 19.11. 11:30 - 13:00 Digital
  • Wednesday 20.11. 15:00 - 16:30 Digital
  • Tuesday 26.11. 11:30 - 13:00 Digital
  • Wednesday 27.11. 15:00 - 16:30 Digital
  • Tuesday 03.12. 11:30 - 13:00 Digital
  • Wednesday 04.12. 15:00 - 16:30 Digital
  • Tuesday 10.12. 11:30 - 13:00 Digital
  • Wednesday 11.12. 15:00 - 16:30 Digital
  • Tuesday 17.12. 11:30 - 13:00 Digital
  • Tuesday 07.01. 11:30 - 13:00 Digital
  • Wednesday 08.01. 15:00 - 16:30 Digital
  • Tuesday 14.01. 11:30 - 13:00 Digital
  • Wednesday 15.01. 15:00 - 16:30 Digital
  • Tuesday 21.01. 11:30 - 13:00 Digital
  • Wednesday 22.01. 15:00 - 16:30 Digital
  • Tuesday 28.01. 11:30 - 13:00 Digital
  • Wednesday 29.01. 15:00 - 16:30 Digital

Information

Aims, contents and method of the course

Algorithms for data analysis are often based on the assumption of independent and identically distributed (i.i.d) data. The world, however, often violates the first "i", i.e., it generates data with a rich spatial and temporal structure such as time-series and images. Representing, understanding, and processing this structure is the domain of signal processing. As such, a firm grasp of signal processing is essential to understand structure in data and design systems that exploit this structure.

In the first part of this course, we will approach signal processing from the perspective of linear time-invariant (LTI) systems, i.e., we will consider signals as outputs of LTI-systems [1]. This approach will lead us to study the discrete(-time) Fourier transform (D(T)FT) and its applications, including sampling and filter design. In the second part of the course, we will study several variants and extensions of the Fourier transform, including the Hilbert-, Discrete Cosine- and Wavelet transforms. In the third part of the course, we will take an alternative approach to signal processing and consider signals as realizations of stationary stochastic processes [2]. This will lead us to the field of stochastic spectral analysis. We will conclude the course with an introduction to information theory and compression algorithms, e.g., the Lempel-Ziv-Welch (LZW) algorithm that is used in data formats such as ZIP and TIFF.

The lectures are complemented by tutorials, pen & paper exercises and coding assignments on simulated and experimental data to foster a deeper understanding of the topics covered in the lectures.

Assessment and permitted materials

There will be three assignments (one preliminary math test, one pen & paper assignment, and one Pythong coding exercise), one mid-term exam, and one final exam. The various assignments and exams count towards the final grade as follows:

* Assignments: 51%
* Two feedback sheets: 4%
* Midterm: 20%
* Final: 25%

In addition, you can earn up to 10% of bonus points by answering questions on Moodle about the pre-recorded videos prior to each review session.

We take cheating very seriously! We will make use of plagiarism and code checking tools. Some examples of plagiarism that will lead to an 'X' include:

* Giving code (or text/math) to another student
* Give screenshot of code (or text/math) to another student
* Copy code (or text/math) from somebody else
* Copy code (or text/math) from the internet without our explicit permission
* Create code (or text/math) for others
* Let other people (or AIs) create code (or text/math) for yourself

We do encourage you to discuss the course content with your peers, but anything you submit must be your own work! In case of doubt, ask us and/or cite your sources!

Minimum requirements and assessment criteria

Prerequisites: StEOP, PR2, MG2, THI, MOD, ADS
Recommended prerequisites: NUM

There will be three assignments (one test on mathematical prerequisistes, one pen & paper assignments and one Python coding assignment), one mid-term exam, and one final exam. The various assignments and exams count towards the final grade as follows:

* Assignments: 51% (1% for math test, 25% each for pen & paper and Python exercise)
* Two feedback sheets: 4%
* Midterm: 15%
* Final: 30%

Grading will be done according to the following scheme:

1. At least 87.5%
2. At least 75.0%
3. At least 62.5%
4. At least 50.0%

In addition, you can earn up to 10% of bonus points by answering questions on Moodle about the pre-recorded videos prior to each review session. These bonus points count towards the overall points independently of the points you achieve on the assignments and the exams, i.e., they can help you pass the course.

*You need at least 10% of the points on each assignment and on each exam to pass the course.*

Examination topics

The major goals of this course include:
* Understanding the theory of signals and linear time-invariant systems.
* Becoming familiar with spectral transformations and data compression algorithms.
* Being able to implement common transformations in Python and applying them to time-series and images.

Reading list

1. Alan V. Oppenheim, Ronald W. Schafer, Discrete-Time Signal Processing, 3rd Edition, Pearson, 2010
2. Donald B. Percival, Andrew T. Walden, Spectral Analysis for Physical Applications, Cambridge University Press, 1993
3. Rafael C. Gonzales, Richard E. Woods Digital Image Processing 4th edition, Addison-Wesley, 2018.
4. Boaz Porat, Digital Processing of Random Signals, Dover Publications, 2008.

Association in the course directory

Last modified: Mo 30.09.2024 07:05