Modeling of electrons and photons beams of linear (planar) accelerator Elekta Synergy in modelling system PLUNC

The article presents the experience of creating a model of beam in the non-commercial 3D Plan-UNC radiation treatment planning system (PLUNC). The results of dosimetry for electron and photon beams of the Elekta Synergy linear accelerator are presented

Oriented matroids for shape representation and indexing

Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA), Port d'Andratx (Spain)In this paper a novel method for indexing views of 3D objects is presented. The topological properties of the regions of the segmented images of the objects are used to define an index based on oriented matroid theory. Oriented matroids, which are projective invariants, encode incidence relations and relative position of the elements of the image and give local and global topological information about their spatial distribution. This indexing technique is applied to 3D object hypothesis generation from single views to reduce the number of candidates in object recognition processes.Peer Reviewe