A general framework for watersheds in images and graphs

Topological Watershed

G. Bertrand, M. Couprie, J. Cousty, L. Najman

A2SI lab, ESIEE / IGM Marne-la-Vallée, FRANCE

Illustration of the topological watershed :

Original image (microscopic view of a cross-section of a uranium oxyde ceramics).
Topological watershed of several filtrations of the original image. The filtrated images are obtained by eliminating the minima which have their dynamics under a certain threshold (parameter). For these images, the parameters are 0 (no filtration), 5, 10, 15, 20 and 25 respectively.
Labelling of the corresponding topological watersheds.

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