Roberto Hirata Jr.,  Franklin César Flores,  Junior Barrera,  Roberto de Alencar Lotufo,  Fernand Meyer. 

This paper proposes an approach for color segmentation which is an alternative to the search of a total order in the color space. Instead of looking for a total order, we look for a suitable metric that defines a color gradient, which is a fundamental step of the morphological segmentation paradigm.

http://sibgrapi.sid.inpe.br/rep-/sid.inpe.br/banon/2002/11.13.12.22

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