| Conference/Proceedings | Proceedings of the 18th IEEE International Conference on Image Processing (IEEE ICIP2011) |
| Start date | 11.09.2011 |
| End date | 14.09.2011 |
| Address | Brussels, Belgium |
| Organisation | IEEE |
| Publisher | IEEE |
| Pages | 1669-1672 |
| Author(s) | Marko Esche, Andreas Krutz, Alexander Glantz, Thomas Sikora |
| Title | Temporal trajectory filtering for bi-directional predicted frames |
| 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. |
| Key words | compression, video compression, temporal in-loop filtering, pixel trajectories, B-frames |
| Note | IEEE catalog number: CFP11CIP-USB ISBN: 978-1-4577-1302-6 |
| File | 1303Esche2011.pdf |