Face analysis fields are widely spread out over a large quantity of domains : Human Computer Interaction, security, movies post-production, games... It includes detection, recognition, 3D reconstruction, animation, and emotion analysis. Face animation was the main motivation of this thesis, and we always kept it in mind at anytime. We discuss here, most of the fields. We first talk about face r...

In this paper we address the issue of joint estimation of head pose and facial actions. We propose a method that can robustly track both subtle and extreme movements by combining two types of features: structural features observed at characteristic points of the face, and intensity features sampled from the facial texture. To handle the processing of extreme poses, we propose two innovations. T...

Target modeling and model fitting are the two important parts of the problem of object tracking. The former has to provide a good reference for the latter. Online appearance models (OAM) has been successfully used for facial features tracking on account of their strong ability to adapt to variations, however, it suffers from time-consuming model fitting. Inverse Compositional Image Alignment (I...

This thesis aims at building a system capable of automatically extracting and parameterizing the position of a face and its features in images acquired from a lowend monocular camera. Such a challenging task is justified by the importance and variety of its possible applications, ranging from face and expression recognition to animation of virtual characters using video depicting real actors. T...

When estimating the dense motion field of a video sequence, if little is known or assumed about the content, a limited constraint approach such as optical flow must be used. Since optical flow algorithms generally use a small spatial area in the determination of each motion vector, the resulting motion field can be noisy, particularly if the input video sequence is noisy. If the moving subject ...

The investigation of the role of nutrition in cancer etiology and the perception of its importance among concerned scientists has gone through various phases over the past 20 years, ranging from the enthusiasm of Candide, Voltaire's hero (we are in the best possible world and we know everything) to Hume's kind of skepticism (the subject is appealing but causality can never be shown). These ups ...

We describe how we constructed an automatic scoring function for machine translation quality; this function makes use of arbitrarily many pieces of natural language processing software that has been designed to process English language text. By machine-learning values of fnnctions available inside the software and by constructing functions that yield values based upon the software output, we ar...

Philipp Koehn and Kevin Knight Information S ien es Institute, University of Southern California 4676 Admiralty Way, Marina del Rey, CA 90292 koehn isi.edu, knight isi.edu Abstra t We present various methods to train word-level translation models for statisti al ma hine translation systems that use widely di erent knowledge sour es ranging from parallel orpora and a bilingual lexi on to only mo...

January, 1861. " If this city, or the suburbs of the same, do afford any young gentle" man, of the first, second, or third head, more or less, whose friends are "but lately deceased, and whose lands are but now come into his hands, " that (to be as exactly qualified as the best of our ordinary gallants " are) is affected to entertain the most gentleman-like use of tobacco; " as first, to give i...

The Arene Candide Cave is a renowned site on the northwestern Italian coast that has yielded numerous burials dating back to terminal phases of Pleistocene (Epigravettian culture). Thanks exceptional preservation remains, and information collected during excavations begun in 1940s, researchers were able reconstruct complex pattern manipulation older consistently occurred when interring new indi...