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Image statistics based on diffeomorphic matching

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3 Author(s)
Charpiat, G. ; Odyssee Lab., Ecole Normale Superieure, Paris, France ; Faugeras, O. ; Keriven, R.

We propose a new approach to deal with the first and second order statistics of a set of images. These statistics take into account the images characteristic deformations and their variations in intensity. The central algorithm is based on nonsupervised diffeomorphic image matching (without landmarks or human intervention). As they convey the notion of the mean shape and colors of an object and the one of its common variations, such statistics of sets of images may be relevant in the context of object recognition, both in the segmentation of any of its representations and in the classification of them. The proposed approach has been tested on a small database of face images to compute a mean face and second order statistics. The results are very encouraging since, whereas the algorithm does not need any human intervention and is not specific to face image databases, the mean image looks like a real face and the characteristic modes of variation (deformation and intensity changes) are sensible.

Published in:

Computer Vision, 2005. ICCV 2005. Tenth IEEE International Conference on  (Volume:1 )

Date of Conference:

17-21 Oct. 2005

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