3D statistical facial reconstruction

The aim of craniofacial reconstruction is to produce a likeness of a face from the skull. Few works in computerized assisted facial reconstruction have been done in the past, due to poor machine performances and data availability, and major works are manually reconstructions. In this paper, we present an approach to build 3D statistical models of the skull and the face with soft tissues from the skull of one individual. Results on real data are presented and seem promising

Statistical skull models from 3D X-ray images

We present 2 statistical models of the skull and mandible built upon an elastic registration method of 3D meshes. The aim of this work is to relate degrees of freedom of skull anatomy, as static relations are of main interest for anthropology and legal medicine. Statistical models can effectively provide reconstructions together with statistical precision. In our applications, patient-specific meshes of the skull and the mandible are high-density meshes, extracted from 3D CT scans. All our patient-specific meshes are registrated in a subject-shared reference system using our 3D-to-3D elastic matching algorithm. Registration is based upon the minimization of a distance between the high density mesh and a shared low density mesh, defined on the vertexes, in a multi resolution approach. A Principal Component analysis is performed on the normalised registrated data to build a statistical linear model of the skull and mandible shape variation. The accuracy of the reconstruction is under the millimetre in the shape space (after rigid registration). Reconstruction errors for Scan data of tests individuals are below registration noise. To take in count the articulated aspect of the skull in our model, Kernel Principal Component Analysis is applied, extracting a non-linear parameter associated with mandible position, therefore building a statistical articulated 3D model of the skull.Comment: Proceedings of the Second International Conference on Reconstruction of Soft Facial Parts RSFP'200

The International Committee of the Red Cross Mine/UXO Awareness Programs

Many current mine awareness strategies continue to use a “presentation approach,” in which the community remains passive and simply receives information. For organizations using such an approach, mine awareness amounts to a simple public information campaign isolated from other kinds of mine action and humanitarian activities. With the aim of addressing the threat of mines and UXO more effectively, the ICRC has adopted another approach. First, the ICRC gathers relevant information on local needs, which can be used to devise an appropriate mine/UXO awareness strategy. Next, the ICRC involves mine-contaminated communities in the mine awareness process. The ICRC also cooperates closely with other organizations in responding to community needs

Red Cross/Red Crescent Mine Action Involvement in the Middle East

The Middle East is an area significantly impacted by landmines, and there is a great need for the spread of mine awareness in mine-affected countries. The Red Cross and Red Crescent are hard at work in the region, attempting to raise mine awareness among the citizens of these nations

Prediction of microgeometrical influences on micropitting fatigue damage on 32CrMoV13 steel

Dr Fabre's sabbatical period at the Cardiff School of Engineering allowed the research to be conducted. Thanks are due to the M2P department of Arts et Métiers ParisTech, to Arts et Métiers ParisTech—Aix en Provence, and to the MécaSurf laboratory for supporting the visit financially, and to Cardiff University for provision of research facilities. Dr Sharif's contribution to the research was supported financially by UK Engineering & Physical Sciences Research Council (EPSRC) with Grant no. EP/G06024X/1.Micropitting is a form of surface fatigue damage that occurs in the gear teeth. It is due to the effect of variation in the mechanical loading in the contact zone between the two teeth, induced especially by flank roughness. In this study, generic roughness profiles were built with geometrical parameters to simulate the contact between two rough surfaces. Using elastohydrodynamic lubrication code and Crossland’s fatigue criteria, the influence on fatigue lifetime was analysed for changes in each parameter. The relevant parameters were determined that influence(i) the conventional pitting,(ii) the extent to which the von Mises equivalent stress exceeds the material yield stress in the zone where micropitting occurs, and(iii) the fatigue lifetime for steel teeth. With nitriding benefits, the same trends were shown with weaker effects

A bibliometric analysis of Australia's international research collaboration in science and technology: analytical methods and initial findings

This paper presents the initial findings from an exploratory bibliometric analysis of Australia's international collaboration in science and technology. This paper is focusses on: (a) Assessing the methodological challenges faced in comprehensively mapping Australia's science and technology research activity from an international engagement perspective; (b) Suggesting solutions to these challenges; (c) Providing some policy-relevant findings of potential use to the Australian Government and the European Commission