In this paper we propose a method for implementing a high-level interface for the synthesis and animation of animated virtual faces that is in full compliance with MPEG-4 specifications. This method allows us to implement the Simple Facial Object profile and part of the Calibration Facial Object Profile. In fact, starting from a facial wire-frame and from a set of configuration files, the devel...

This paper presents an automatic FDP (Facial Definition Parameters) and FAP (Facial Animation Parameters) generation method from an image sequence that captures a frontal face. The proposed method is based on facial feature tracking without markers on a face. We present an efficient method to extract 2D facial features and to generate the FDP by applying 2D features to a generic face model. We ...

simplicial complexes (ASCs) are one of the most known topological models [1, 89, 21, 32]. Semi-simplicial sets (SSSs) generalize them [82, 67, 68], i.e. a SSS can be associated with any ASC, but the converse is not true. In particular, SSSs can represent « curved » objects, maybe multi-incident, but it is not possible for ASCs. The definition type also differs: ASCs are sets of sets, SSSs are a...

Statistical problems where ‘the number of things you don’t know is one of the things you don’t know’ are ubiquitous in statistical modelling. They arise both in traditional modelling situations such as variable selection in regression, and in more novel methodologies such as object recognition, signal processing, and Bayesian nonparametrics. All such ‘trans-dimensional’ problems can be formulat...

Several waste processing facilities have experienced se­ rious difficulties that, given proper and careful conduct of the procurement process, could have been avoided. Some of these difficulties have led to legal disputes with inor dinate amounts of time and effort being spen� to resolv� them. Based on the authors' experience with a number of projects, in many instances the problems could have ...

there are different approaches to the question of developments in contemporary iran. this research is an attempt to introduce communitarianism theory whilst at the same time use it to examine the history of political thought in contemporary iran. today this theory is one of the most important approaches of post modernist era which has challenged liberalism and some tenets of modernity. using th...

The concept of causality is reviewed with special emphasis on occupational diseases. Separate approaches from the philosophical, scientific, and legal points of view are identified. There is controversy over the methodology of logical causality; inductive and deductive methods are described and reference is made to the verification or refutation approach. Application of the methods to epidemiol...