Illustration of the 3-dimensional textures and combined shapes and textures spaces of the Model 1. Each circle or cross represents a texture vector or both a shape and a texture vector, computed as explained in Section 3.1. In the family figures, red circles represent the Amphiprion family, whereas green points represent the Acanthurus family. Separability between family clusters is better in the texture space than in the combined shape and texture space, which justifies why the LDA is conducted in the texture space.