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Temporal trajectory filtering for bi-directional predicted frames
Citation key 1303Esche2011
Author Marko Esche and Andreas Krutz and Alexander Glantz and Thomas Sikora
Title of Book Proceedings of the 18th IEEE International Conference on Image Processing (IEEE ICIP2011)
Pages 1669–1672
Year 2011
Address Brussels, Belgium
Month sep
Note IEEE catalog number: CFP11CIP-USB ISBN: 978-1-4577-1302-6
Publisher IEEE
Organization IEEE
Abstract In this work the application of a temporal in-loop filtering approach for B-frames in video compression based on the Temporal Trajectory Filter (TTF) is investigated. The TTF constructs temporal pixel trajectories for individual image points in the P-frames of a video sequence, which can be utilized to improve the quality of the reconstructed frames used for prediction. It is shown, how this concept can be adapted to B-frames despite the fact that these already use temporal motion information to a great extent through the flexible choice of reference frames and prediction modes. The proposed filter has been integrated into the H.264/AVC encoder using the extended profile with hierarchical B-frames and was tested on a wide range of sequences. The filter produces bit rate reductions of up to -4\% with an average of -1.6\% over all tested sequences while also improving the subjective quality of the decoded video.
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