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In this paper we use different decimation strategies in irregular pyramid segmentation framework, to produce perceptually important groupings. These graph decimation strategies, based on the maximum independent set concept, used in Borůvka's minimum spanning tree based partitioning method, show similar discrepancy segmentation errors. Global and local consistency error measures do not show big differences between the methods although human visual inspection of the results show advantages for one method. To a certain extent this subjective impression is captured by the new criteria of 'region size variation'.

Irregular Pyramid Segmentations with Stochastic Graph Decimation Strategies