A new method for classification of Brachiopods based on the radon transformation
Brachiopods have a lateral outline which is quite important in systematic studies. It is often assessed by a qualitative evaluation and linear measurements, which are not clear enough and precise for describing the shape of the shell and its changes
In this paper we propose a new method for classification of fossils based on the radon transform from their greyscale image. We take the case of brachiopods which has Complex shapes. We use an adaptation of Radon transform called R-transform which is invariant to common geometrical transformations. Each shape is described by R3D transform. We consider the grayscale image as a set of cuts obtained from successive binarization for each gray level in image, and for each segmentation we compute the R-transform then we obtained the R3D transform. The advantages of the proposed method are robustness to noise, and invariant to common geometrical transformations scale, translation and rotation.
Keywords: Brachiopod, Fossil, Classification, Radon transform, R-transform, Grayscale image, R3D transform, Shape recognition.
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ABOUT THE AUTHORS
Youssef Ait Khouya
UFR Metrology Automatic and systems Analysis ,Laboratory of Applied Mathematics and Computer Science (LAMAI),Faculty of Science and Technology, BP 549, Marrakech, Morocco.
Noureddine Alaa
Department of Mathematics, Laboratory of Applied Mathematics and Computer Science (LAMAI), Faculty of Science and Technology, BP 549, Marrakech, Morocco.
Youssef Ait Khouya
UFR Metrology Automatic and systems Analysis ,Laboratory of Applied Mathematics and Computer Science (LAMAI),Faculty of Science and Technology, BP 549, Marrakech, Morocco.
Noureddine Alaa
Department of Mathematics, Laboratory of Applied Mathematics and Computer Science (LAMAI), Faculty of Science and Technology, BP 549, Marrakech, Morocco.