Hugo Mercier

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An Active Appearance Model (AAM) is a variable shape and appearance model built from annotated training images. It has been largely used to synthesize or fit face images. Person-independent face AAM fitting is a challenging open issue. For standard AAMs, fitting a face image for an individual which is not in the training set is often limited in accuracy,(More)
The work presented here takes place in the field of computer aided analysis of facial expressions displayed in sign language videos. We use Active Appearance Models to model a face and its variations of shape and texture caused by expressions. The inverse compositional algorithm is used to accurately fit an AAM to the face seen on each video frame. In the(More)
In many intellective tasks groups consistently outperform individuals. One factor is that the individual(s) with the best answer is able to convince the other group members using sound argumentation. Another factor is that the most confident group member imposes her answer whether it is right or wrong. In Experiments 1 and 2, individual participants were(More)
Observational studies suggest that children as young as 2 years can evaluate some of the arguments people offer them. However, experimental studies of sensitivity to different arguments have not yet targeted children younger than 5 years. The current study aimed at bridging this gap by testing the ability of preschoolers (3-, 4-, and 5-year-olds) to weight(More)
Automatic extraction of facial feature deformations (either due to identity change or expression) is a challenging task and could be the base of a facial expression interpretation system. We use Active Appearance Models and the simultaneous inverse compositional algorithm to extract facial deformations as a starting point and propose a modified version(More)
Societies are rife with negative, damaging practices, from open defecation to female genital cutting, endemic in many developing countries, to corruption and violence against women and children that we also witness in many Western societies. The theoretical and practical challenge we face is twofold. On the one hand, we want to explain what generates and(More)
How do people tackle indeterminate spatial descriptions, that is those descriptions for which several representations are possible? Take for instance the two following statements: B is to the left of A, C is to the left of A. This description is indeterminate because it is compatible with at least two possibilities: (1) C B A; (2) B C A. Studies on human(More)
Choi and Nisbett (2000) reported that Koreans showed stronger hindsight bias than Americans. The purpose of this study was to see whether hindsight bias is stronger among Easterners than among Westerners using a probability judgment task, and to test an ‘explicit-implicit’ hypothesis and a ‘rule-dialectics’ hypothesis. We predict that the implicit process(More)
Connectives, such as because, are routinely used by parents when addressing their children, yet we do not know to what extent children are sensitive to their use. Given children's early developing abilities to evaluate testimony and produce arguments containing connectives, it was hypothesized that young children would show an appropriate reaction to the(More)
⁎ Corresponding author. E-mail address: hugo.mercier@gmail.com (H. Mercier) http://dx.doi.org/10.1016/j.evolhumbehav.2015.01.003 1090-5138/© 2015 Elsevier Inc. All rights reserved. Please cite this article as: Miton, H., et al., Un havior (2015), http://dx.doi.org/10.1016/j.ev Article history: Initial receipt 10 June 2014 Final revision received 22 January(More)