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Welcome to the Homepage of the Lecture Image Compression Winter Term 2013 / 2014 |
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Image Compression
Announcements – Description – Entrance requirements – Exams – Download
10/04/2014: The certificates are ready, and can be fetched at our secretary. The course is designed as a supplement for image processing lectures, to be attended before, after or parallel to them. After the lecture, participants should be able to understand the concepts used in different compression algorithms. After some theoretical background, we will introduce general-purpose entropy coding algorithms such as Huffman-coding or arithmetic coding, discuss adaptive and higher-order entropy coding algorithms, and talk about dictionary methods such as the method by Lempel, Ziv, and Welch (LZW). Afterwards, we discuss lossless image compression algorithms based on predictions (PNG, JPEG-LS, JBIG), as well as lossy image compression algorithms based on transformations (JPEG, JPEG 2000). Furthermore, algorithms based on diffusion or fractals are introduced, before giving a glimpse on how video compression works.
Basic mathematics courses are recommended. Understanding English is
necessary. Image processing lectures such as
"Image Processing and Computer Vision" are helpful for some specific topics,
but not necessary.
The homework assignments are intended to be solved at home and have to be submitted in the lecture break, or earlier. In order to qualify for the exam you must obtain 50% of the possible points on average.
Working in groups of up to 2 people is permitted, but both persons must be able
to explain the solutions handed in. Example solutions will be available some
time after the tutorial here.
It might be advisable to bring a ruler and a coloured pencil. The results of the second written exam can be found here, and the corresponding distribution of points and grades here.
The following thresholds were applied for the second exam to determine the grades:
You can inspect your exam sheets on Thursday, March 20, 14:00-16:00,
building E1.7, room 4.07 (4rd floor). If you are unable
at that time, you can inspect your exam later. Just contact
me to make an appointment, (or come and hope that I have time).
The following thresholds were applied for the first exam to determine the grades:
There is no specific book that covers the complete content of this class.
However, each of the following books covers several of the topics discussed
in the lecture:
These books will be available in the "Semesterapparat" in the library, see
here.
Participants of the course can download the lecture materials here after the lecture
(access is password-protected). However, be aware that these slides are only
provided to support the classroom teaching, not to replace it. Additional
organisational information, such as examples and explanations that may be
helpful or necessary to understand the content of the course (and thus
relevant for the exam), will be provided in the lectures. It is solely
your responsibility - not ours - to make sure that you receive this
infomation.
The topics given here are preliminary and might change slightly.
Participants of the course will be able to download example solutions here
after the tutorial
(access password-protected). As with the slides of the lecture, you should be
aware that these slides are only
provided to support the classroom teaching, not to replace it. Additional
examples and explanations that may be
helpful or necessary to understand the solutions or parts of the lecture
(and thus relevant for the exam), will be provided in the tutorials. It is
solely your responsibility - not ours - to make sure that you receive this
infomation.
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