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Use the Radon transform for describing brachiopod shape

In this paper we propose a novel method for describing fossils shape, we take the case of brachiopods which has Complex forms. Our approach based on the radon transform, the R-transform is our principal transform used, and that is invariant to common geometrical transformations like scale, translation and rotation. For the unicity of the approach, we compute the R-transform for different levels of the chamfer distance transform. We can deduce that the results obtained are optimized, in the sense that they allow the classification of Brachiopods.