click to view the MPEG movie (cliquez pour voir le film MPEG)

Texture animation by means of the generalized Fourier filtering process [Animation de texture grâce à un filtrage de Fourier généralisé].

Sixteen frames from the generalized filtering process. The "seed" picture (STAR, see figure "Four tool pictures") providing, after an appropriate rotation, the kernel picture (not displayed on this figure); denoting R the rotation operator, each frame of this picture can be defined as:
where angle varies within [0,pi/2] with a step of pi/32.

(see a blow up of the lower left picture with another color palette)

(CMAP28 WWW site: this page was created on 01/13/1994 and last updated on 04/02/2019 07:59:12 -CEST-)

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Copyright (c) Jean-François Colonna, 1994-2019.
Copyright (c) France Telecom R&D and CMAP (Centre de Mathématiques APpliquées) UMR CNRS 7641 / Ecole Polytechnique, 1994-2019.