Local anisotropy analysis for non-smooth images

Sandra Bergonnier (1, 2) , François Hild (1) , Stéphane Roux (2)

1 LMT - Laboratoire de Mécanique et Technologie
2 SVI - Surface du Verre et Interfaces

Identification of local anisotropy and determination of principal axes is addressed through different methods that are designed to be tolerant to the non-smooth character of images on the pixel scale. These different tools are validated on various examples, and their performances are compared. The most powerful, robust and accurate method consists in computing the curvature tensor of the auto-correlation function of regularized images using fast Fourier transforms.

Mots clés: Texture analysis; padding; orientation; fibrous material

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Sandra Bergonnier, François Hild, Stéphane Roux. Local anisotropy analysis for non-smooth images. Pattern Recognition, 2007, 40 (2), pp.544-556. ⟨hal-00014052⟩