Motion-based segmentation of transparent layers in video sequences

  • Authors:
  • Vincent Auvray;Patrick Bouthemy;Jean Liénard

  • Affiliations:
  • IRISA/INRIA, Rennes, France;IRISA/INRIA, Rennes, France;General Electric Healthcare, Buc, France

  • Venue:
  • MRCS'06 Proceedings of the 2006 international conference on Multimedia Content Representation, Classification and Security
  • Year:
  • 2006

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Abstract

We present a method for segmenting moving transparent layers in video sequences. We assume that the images can be divided into areas containing at most two moving transparent layers. We call this configuration (which is the mostly encountered one) bi-distributed transparency. The proposed method involves three steps: initial block-matching for two-layer transparent motion estimation, motion clustering with 3D Hough transform, and joint transparent layer segmentation and parametric motion estimation. The last step is solved by the iterative minimization of a MRF-based energy function. The segmentation is improved by a mechanism detecting areas containing one single layer. The framework is applied to various image sequences with satisfactory results.