This paper analyses the relativistic stellar aberration requirements for the Space Interferometry Mission (SIM). We address the issue of general relativistic deflection of light by the massive self-gravitating bodies. Specifically, we present estimates for corresponding deflection angles due to the monopole components of the gravitational fields of a large number of celestial bodies in the sola...

Introduction: The U.S. Navy is exploring new technologies aimed at improving maritime electro-optic and infrared imaging systems. Specific goals include the enhancement of day/night, wide-area situational awareness; improved detection, identification, and tracking capabilities; and increased system reliability. Developing an imaging system that can accomplish these objectives is a tremendous de...

Representation of search and target acquisition (STA) in military models and simulations arguably abstracts the most critical aspects of combat. This research focuses on the search aspect of STA for the unaided human eye. It is intuitive that an individual’s environmental characteristics and interpretation of the environment in the context of all comprehended information, commonly summarized as...

Researchers have proposed that immersion could have advantages for tasks involving abstract mental activities, such as conceptual learning; however, there are few empirical results that support this idea. We hypothesized that higher levels of immersion would benefit such tasks if the mental activity can be mapped to objects or locations in a 3D environment. To investigate this hypothesis, we pe...

Human tracking system plays a critical role in many applications such as surveillance and robot applications. Our earlier implementation [1] while quite successful was restricted to applications with approximately fixed camera. In this paper we present some recent work that removes this restriction. Such systems are required for machine vision from moving platforms such as robots, intelligent v...

This paper considers the problem of designing a realtime surveillance system, equipped with a single camera on a pan/tilt platform, to track multiple moving targets within the camera’s field of regard. The objective is to maintain motion trajectory information of as many of these targets as possible, and for as long as possible. Because the camera can only capture a fraction of the field of reg...

Immersion has been shown to be beneficial in a number of different application domains. We attempted to quantify the effect of immersion on 3D abstract data analysis. We developed a program to show users animated plasma flows in a CAVE [1] environment. Stereopsis and field of regard were varied in a user test involving flows around a sphere. Our results showed that the stereopsis helped users t...