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Efficient Video Coding with Motion-Compensated Orthogonal Transforms
KTH, School of Electrical Engineering (EES), Sound and Image Processing.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Well-known standard hybrid coding techniques utilize the concept of motioncompensated predictive coding in a closed-loop. The resulting coding dependencies are a major challenge for packet-based networks like the Internet. On the other hand, subband coding techniques avoid the dependencies of predictive coding and are able to generate video streams that better match packet-based networks. An interesting class for subband coding is the socalled motion-compensated orthogonal transform. It generates orthogonal subband coefficients for arbitrary underlying motion fields. In this project, a theoretical lossless signal model based on Gaussian distribution is proposed. It is possible to obtain the optimal rate allocation from this model. Additionally, a rate-distortion efficient video coding scheme is developed that takes advantage of motion-compensated orthogonal transforms. The scheme combines multiple types of motion-compensated orthogonal transforms, variable block size, and half-pel accurate motion compensation. The experimental results show that this scheme outperforms individual motion-compensated orthogonal transforms.


Place, publisher, year, edition, pages
EES Examensarbete / Master Thesis
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-91858OAI: diva2:511426
Educational program
Master of Science - Wireless Systems
Available from: 2012-03-21 Created: 2012-03-21 Last updated: 2012-12-04Bibliographically approved

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