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We have been investigating motion segmentation for MPEG-IV applications. The proposed new approach works top-down, first estimating a best fit motion prediction for the frame as a whole, then finding non-conforming regions, segmenting, and recalculating motion vectors for the independent segments. The procedure iterates to produce an accurate segmentation of the several moving objects in a video sequence.
As part of this work a new two-level picture compression scheme has been developed that performs better than all standard and known research methods.
Asymmetric binary tree partition image generated by Ahsan Shamim