Bachelor and Master Theses

Title: Quality-aware frame skipping for MPEG-2 video based on inter-frame similarity
Subject: Computer Science
Level: Advanced
Description: Frame skipping is a way to adapt video streams to the available
system resources. If frames are skipped properly, we can provide
high video quality while achieving good resource utilization.
However, frame skipping needs appropriate assumptions about the video stream to be effective. Skipping the wrong frame at the wrong time can result in a noticeable disturbance in the played video stream.

We have developed methods for quality-aware frame selection for MPEG decoding under limited resources, based on realistic timing constraints for the decoding of MPEG streams. Given that not all frames can be processed, it selects those which will provide the best picture quality while matching the available resources. However, our frame priority assignment algorithm is based on
structural approach, which means that it does not examine the contents of the frame while dropping frames. Therefore, the objective of this thesis is to develop an approach which considers
information contained in a frame when selecting frames. It requieres proper analysis of MPEG-2 video on sub-frame level and a deep understanding of MPEG-2 coding.

More specific, the following topics will be addressed in the thesis:
  • proper sub-frame analysis by using MPEG2Event tool

  • how to compare the encoded frame content?

  • can the comparisson be performed reasonably fast at run-time?

  • an optimal solution for offline frame skipping

  • an sub-optimal, fast, heuristic solution for the online skipping

Prel. end date: 2006-10-23
Presentation date: 2006-10-05
Student: Hassan Bin Tariq Khan
Student: Khurram Anwar Malik
IDT supervisor: Damir Isovic, +46-21-103173

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2006-10-23, 09:46

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