From the geometrical path statistics of rays in an anomalous-diffraction theory (ADT) [Opt. Lett. 28, 179 (2003)] closed-form expressions for the geometrical path distribution of rays and analytical formulas for the optical efficiencies of finite circular cylinders oriented in an arbitrary direction with respect to the incident light are derived. The characteristics of the shapes of the cylinde...

The concepts of the experimental design system that are discussed are feature modeling and geometrical constraints. The main technique for creating the user environment is Virtual Reality. Feature modeling forms the basis for managing the design data. To start with, data storage is implemented in a Relational Data Base Management System. Along with this a (traditional) interface is developed fo...

We aim to determine the effect of image restoration (deblurring) on the ability to acquire moving objects detected automatically from long-distance thermal video signals. This is done by first restoring the videos using a blind-deconvolution method developed recently, and then examining its effect on the geometrical features of automatically detected moving objects. Results show that for modern...

With recent popularity of 3D models, retrieval and recognition of 3D models based on their shape has become an important subject of study. This paper proposes a 3D model retrieval algorithm that is invariant to global deformation as well as to similarity transformation of 3D models. The algorithm is based on a set of local 3D geometrical features combined with bag-of-features approach. The algo...

The modelling of JET corner configurations, in which the strike points are positioned deep corners divertor, is extremely challenging for edge plasma fluid tools. To circumvent this technical limitation, a geometrical approximation has been proposed, consisting considering an artificial minor modification geometry divertor targets plates. In paper, we investigate how significantly impacts outpu...

Recent UA1 and UA4 experimental results for ~p collisions at 540 GeV center of mass energy are analyzed in the geometrical picture. Recent experiments [1 ] at the ~p collider by the o.s5 UA1 and UA4 detectors have revealed interesting features of elastic Op scattering at a center of mass energy of 540 GeV. We wish to discuss these features from the viewpoint of the geometrical picture [2] of hi...

Local feature description is a fundamental yet challenging task in 3D computer vision. This paper proposes a novel descriptor, named Statistic of Deviation Angles on Subdivided Space (SDASS), for comprehensive encoding geometrical and spatial information of local surface on Local Reference Axis (LRA). The SDASS descriptor is generated by one geometrical feature and two spatial features. Conside...