Research at RMA in the Evolving Context of Mine Action

The purpose of this chapter is to put the research of the Royal Military Academy (RMA) in mine action in a historical perspective by providing some background information. The vocabulary used in mine action and the landmine contamination problem are first presented. Formalisation of close‐in detection and of area reduction is then proposed. An overview of the research projects, the involved partners and the objectives as well as the list of PhDs performed at RMA are then provided. The chapter ends with an overview of the book and their link with the cited projects

An evaluation of pixel-based methods for the detection of floating objects on the sea surface

Ship-based automatic detection of small floating objects on an agitated sea surface remains a hard problem. Our main concern is the detection of floating mines, which proved a real threat to shipping in confined waterways during the first Gulf War, but applications include salvaging, search-and-rescue operation, perimeter, or harbour defense. Detection in infrared (IR) is challenging because a rough sea is seen as a dynamic background of moving objects with size order, shape, and temperature similar to those of the floating mine. In this paper we have applied a selection of background subtraction algorithms to the problem, and we show that the recent algorithms such as ViBe and behaviour subtraction, which take into account spatial and temporal correlations within the dynamic scene, significantly outperformthe more conventional parametric techniques, with only little prior assumptions about the physical properties of the scene

Temperature du sol et distribution de quelques especes dominantes sur un terril de charbonnage.

The vegetation found on a large range of soil temperature (34oC) shows a succession of 3 life forms resulting from a variable equilibrium between responses to the physical and to the biotic environmental factors. Hemicryptophytes are highly competitive but weakly adapted to the high temperatures. Annuals, less competitive, avoid stress by means of a short life cycle. Chamaephytes are characterized by a low competitive ability associated with mechanisms specifically adapted to high temperature. -from English summarySCOPUS: ar.jinfo:eu-repo/semantics/publishe

Contribution au traitement numérique des signaux multidimensionnels. Application à la restauration d'images

Doctorat en Sciencesinfo:eu-repo/semantics/nonPublishe