Motion Analysis
People:
- Adrian Evans
- Simon Tredwell (PhD awarded July 2004)
Background:
By identifying corresponding objects or patterns in successive frames from image sequences, estimates of the inter-reframe motion to be made. Template matching is commonly used in video coding but has difficulty coping with the non-rigid motion, low contrast and high noise found in remotely sensed images of objects such as clouds and glaciers. However, when combined with a smoothness criterion such as that provided by relaxation labelling, the candidates vectors from template matching can be used to produce a locally consistent field. Filters for motion field analysis and motion estimation for video coding are other area of work.
Projects:
- Tracking deformable objects in remotely sensed images.
- Motion field filtering and analysis.
- Motion field estimation and coding for video compression (PhD student Simon Tredwell).
Publications:
- A.N. Evans, Cloud Motion Analysis Using Multichannel Correlation-Relaxation Labeling, IEEE Geoscience and Remote Sensing Letters, 3 (3), pp. 392-396, July 2006. pdf
- A. N. Evans, Vector Area Morphology for Motion Field Smoothing and Interpretation, IEE Proceedings-Vision, Image and Signal Processing, 150(4), pp. 219-226, August 2003. pdf
- S. Tredwell and A.N. Evans, Improved Motion Description Coding Using The List Mapping Motion Description (LMMD), in Proc. IEEE International Conference on Image Processing, Rochester, NY, USA, Volume I, pp. 657-660, September 2002. pdf
- S. Tredwell and A.N. Evans, A Sequential Vector Selection Algorithm for Controllable Bandwidth Motion Description Encoding, in Proc. IEEE International Symposium on Intelligent Multimedia, Video & Speech Processing, Hong Kong, pp. 209-212, May 2001. pdf
- A.N. Evans, On the Use of Ordinal Measures for Cloud Tracking, International Journal of Remote Sensing, 21(9) pp. 1939-1944, June 2000.
- A.N. Evans, Full Field Glacier Surface Motion Computation from Digital Image Sequences, IEEE Transactions on Geoscience and Remote Sensing, 38(2) pp. 1064-1072, Part 2, March 2000. pdf
- A.N. Evans, Y Guo and D.M. Monro, Limited Motion Estimation Scheme for Multimedia Video Compression, in Proc. IEEE 6th International Conference on Electronics, Circuits and Systems, Paphos, Cyprus, Volume 1, pp. 453-456, September 1999. pdf