Abstract for smith_bmvc1999

British Machine Vision Conference 1999

EDGE TRACKING FOR MOTION SEGMENTATION AND DEPTH ORDERING

Paul Smith, Tom Drummond, and Roberto Cipolla

Sept 1999

This paper presents a new theoretical framework for motion segmentation based on the motion of tracked region edges. By considering the visible edges of an object, constraints may be placed on the motion labelling of edges. This enables the most likely region labelling and layer ordering to be established, thus producing a segmentation.

An implementation is outlined and demonstrated on test sequences containing two motions. The image is divided into regions using a colour edge-based segmentation scheme and the normal motion of these edges is tracked. The EM algorithm is used to partition the edges and fit the best two motions accordingly. Hypothesising each motion in turn to be the foreground motion, the labelling constraints can be applied and the frame segmented. The hypothesis which best fits the observed edge motions indicates the layer ordering and leads to a very accurate segmentation.


(ftp:) smith_bmvc1999.ps.gz (http:) smith_bmvc1999.ps.gz
PDF (automatically generated from original PostScript document - may be badly aliased on screen):
  (ftp:) smith_bmvc1999.pdf | (http:) smith_bmvc1999.pdf

If you have difficulty viewing files that end '.gz', which are gzip compressed, then you may be able to find tools to uncompress them at the gzip web site.

If you have difficulty viewing files that are in PostScript, (ending '.ps' or '.ps.gz'), then you may be able to find tools to view them at the gsview web site.

We have attempted to provide automatically generated PDF copies of documents for which only PostScript versions have previously been available. These are clearly marked in the database - due to the nature of the automatic conversion process, they are likely to be badly aliased when viewed at default resolution on screen by acroread.