Statistics of Natural Images

Summer Term 2017

(Main) Seminar: Statistics of Natural Images

Sarah Andris, Prof. Joachim Weickert

Summer Term 2017

(Main) Seminar (2 h)

Notice for bachelor/master students of mathematics: This is a »Hauptseminar« in the sense of these study programs.

Image and corresponding colour distribution. (Source: [1])

NEWS: Registration is open.

NEWS: Registration is closed.

Important DatesDescriptionRegistrationRequirementsIntroductory MeetingOverview of Topics

Introductory meeting (mandatory):
The introductory meeting will take place on Thursday, February 16, 2017, 4:15 p.m., in E1.7, Room 4.10.
In this meeting, we will assign the topics to the participants. Attendance is mandatory for all participants. Do not forget to register first (see below).

Regular meetings during the summer term 2017:
Wednesday, 4:15 p.m., in Building E1.7, Room 4.10

Contents: Natural images can be interpreted as a random variables that represent certain statistical regularities. Traditionally, research in this field has tried to connect image statistics with the mechanisms of the human visual system. Since many areas of visual computing are concerned with either producing images that are visually pleasing for humans or extracting information that a human might see, understanding these connections yields a plethora of possibilities to design new methods.
In this seminar, we will cover the basic concepts of the human visual perception, image acquisition of natural images, statistics of several transformations, Markov Random Fields, as well as some extensions to colour, motion, and range images.
We will discuss several chapters of the book Image Statistics in Visual Computing by T. Pouli, E. Reinhard, and D. Cunningham ([1]) as well as some additional papers.

Prerequisites: The seminar is for advanced bachelor or master students in Visual Computing, Mathematics, or Computer Science. Basic mathematical knowledge (e.g. Mathematik für Informatiker I-III) and some knowledge in image processing and computer vision is required.

Language: All papers are written in English, and English is the language of presentation.

The registration period is over.

Regular attendance: You must attend all seminar meetings, except for provable important reasons (medical certificate).

Talk: Talk duration is 30 min, plus 15 min for discussion . Please do not deviate from this time schedule.
You may give a presentation using a data projector, overhead projector or blackboard, or mix these media appropriately. Your presentation must be delivered in English. Your slides and your write-up, too, have to be in English.

Write-up: The write-up has to be handed in three weeks after the lecture period ends. The deadline is Friday, August 18, 23:59. The write-up should summarise your talk and has to consist of 5 pages per speaker. Electronic submission is preferred. File format for electronic submissions is PDF – text processor files (like .doc) are not acceptable. Do not forget to hand in your writeup: Participants who do not submit a writeup cannot obtain the certificate for the seminar.

Plagiarism: Adhere to the standards of scientific referencing and avoid plagiarism: Quotations and copied material (such as images) must be clearly marked as such, and a bibliography is required. Otherwise the seminar counts as failed.

Mandatory consultation: Talk preparation has to be presented to your seminar supervisor no later than one week before the talk is given. It is your responsibility to approach us timely and make your appointment.

No-shows: No-shows are unfair to your fellow students: Some talks are based on previous talks, and your seminar place might have prevented the participation of another student. Thus, in case you do not appear to your scheduled talk (except for reasons beyond your control), we reserve the right to exclude you from future seminars of our group.

Participation in discussions: The discussions after the presentations are a vital part of this seminar. This means that the audience (i.e. all paricipants) poses questions and tries to find positive and negative aspects of the proposed idea. This participation is part of your final grade.

Being in time: To avoid disturbing or interrupting the speaker, all participants have to be in the seminar room in time. Participants that turn out to be regularly late must expect a negative influence on their grade.

Here are the slides from the introductory meeting. They contain important information for preparing a good talk.

We will discuss the following papers. If your registration was successful, the password will be sent to you before the first meeting.

All Chapters are referring to the book Image Statistics in Visual Computing by T. Pouli, E. Reinhard, D. Cunningham [1]. Chapter 1, Chapter 2, and Chapter 3 contain very interesting introductory information, but are not suited to fill a 30 minute talk. Therefore, please read them before our first regular seminar meeting.

You can find the complete book here. It also contains the bibliography, if you are interested in some of the mentioned sources.

No.   Date   Speaker Topic
1 03.05. Carsten Klaus
Chapter 4: First-Order Statistics
2 03.05. Moustafa Abouelenein
Chapter 5: Gradients, Edges, and Contrast
3 10.05. Ramzi Theodory
Matlab Example
Chapter 6: Fourier Analysis
4 10.05. Anna Krasilnikova
5 -- dropped
6 17.05. Andrei Sirazitdinov
Chapter 8: Wavelet Analysis
7 31.05. Noshaba Cheema
8 31.05. Tobias Alt
9 07.06. Shadi Rahimian
10 07.06. Nirmal Kumar Ramadoss
11 14.06. Ali Raees
12 14.06. Lakshmikanthan Skrikanthan
13 21.06. Serina Giha
14 21.06. Zeeshan Khan Suri
Slides (with Videos)
Slides (without Videos)
15 28.06. Bakthiar Ali Shah

  1. T. Pouli, E. Reinhard, D. Cunningham:
    Image Statistics in Visual Computing.
    CRC Press, Taylor and Francis Group, Boca Raton, FL, 2014.

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