This work presents an eye-tracking and pupil size-measuring device that interfaces with a computer for applications useful in psychometry, ophthalmology, physiology and virtual reality (VR) systems. This system utilizes a change-coupled device (CCD) camera, appropriate lenses, PC with frame grabber and a DSP unit with various types of VR equipment, i.e., HMD, simulator or LCD projection device....

there are  many  definitions  about  economy . according  to  one of  the  famous  accepted  definitions , economic  laws  have  classified  to two  groups. both  of  them  are  influenced  by  social  structure  and  it’s  changes  so  they  are  different  in  various  societies . movement  from  one  society   to  another  happens  due  to “intellectualize” , principal  maximum  production  ...

Abstract The Fairlie-Gumbel-Morgenstern (FGM) family has been investigated in detail for various continuous marginals such as Cauchy, normal, exponential, gamma, Weibull, lognormal and others. It has been a popular model for the bivariate distribution with mild dependence. However, bivariate FGM’s with continuous marginals on a bounded support discussed in the literature are only those with uni...

Modern desktop PCs are capable of taking 2D Geographic Information System (GIS) applications into the realm of interactive 3D virtual worlds. In prior work we developed and presented graphics algorithms and data management methods for interactive viewing of a 3D global terrain system for desktop and virtual reality systems. In this paper we present a key data structure and associated render-tim...

This paper reports the design, development, and preliminary performance evaluation of TWISTER II (Telexistence Wide-angle Immersive STEReoscope model II), an immersive full-color autostereoscopic display. The project is designed for the purpose of a face-to-face telecommunication system called “mutual telexistence.” The basic idea of mutual telexistence is the projection of human beings into a ...

In this paper the need for employing a data reduction algorithm in using digital graphic systems to display biomedical signals is firstly addressed and then, some such algorithms are compared from different points of view (such as complexity, real time feasibility, etc.). Subsequently, it is concluded that Turning Point algorithm can be a suitable one for real time implementation on a microproc...