Segmentation 3D d'hologrammes numériques de particules par palpage morphologique : application à l'analyse d'un jet diesel haute-pression

In this paper, we are concerned with the study of a 3D particle field using a digital holography method. Digital holography offers new possibilities compared to classical holography, particularly because of its ease of use. In a first step, we record the hologram of the particles field on the CCD sensor. Then, the hologram is reconstructed plan by plan in order to obtain the studied volume. For the 3D reconstruction of the 3D particle cloud, a tool allowing to locate the particles on every plans is required. For this purpose, we use a morphological transform, called MOMP, based on a probing approach. The key idea of this method is to analyze both shape and intensity of the diffraction patterns of the particles to find their depth position. We apply the whole method to analyze a border volume of a high pressure diesel spray and to obtain the 3D field of droplet.