Abstract. Natural speech is produced by the vocal organs of a particular talker. The acoustic features of the speech signal must therefore be correlated with the movements of the articulators (lips, jaw, tongue, velum,...). For instance, hearing impaired people (and not only them) improve their understanding of speech by lip reading. This chapter is an overview of audiovisual speech processing with emphasis on some experiments concerning recognition, speaker verification, indexing and corpus based synthesis from tongue and lips movements. 1

This project explores the problem of finding the celebrity who most resembles the individual in a given photo. This problem is more general than face recognition (and therefore more challenging). I first compare the performance of