Video coding with adaptive motion-compensated orthogonal transforms
2012 (English)In: / [ed] Domanski, M; Grajek, T; Karwowski, D; Stasinski, R, IEEE , 2012, 293-296 p.Conference paper (Refereed)
Well-known standard hybrid coding techniques utilize the concept of motion-compensated 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 so-called motion-compensated orthogonal transform. It generates orthogonal subband coefficients for arbitrary underlying motion fields. In this paper, a theoretical signal model based on Gaussian distributions is discussed to construct a cost function for efficient rate allocation. 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 sizes, and half-pel accurate motion compensation. The experimental results show that this adaptive scheme outperforms individual motion-compensated orthogonal transforms by up to 2 dB.
Place, publisher, year, edition, pages
IEEE , 2012. 293-296 p.
Motion compensation, Signal encoding, Video streaming
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-100298DOI: 10.1109/PCS.2012.6213350ISI: 000306962400072ScopusID: 2-s2.0-84864066428ISBN: 978-145772048-2OAI: oai:DiVA.org:kth-100298DiVA: diva2:543197
Picture Coding Symposium (PCS)
FunderICT - The Next Generation
QC 201208072012-08-072012-08-062016-04-25Bibliographically approved