Spanning all size levels, regulating biological forces and transport are fundamental life processes. Used by various investigators over the last dozen years, optical techniques offer unique advantages for studying biological forces. The most mature of these techniques, optical tweezers, or the single-beam optical trap, is commercially available and is used by numerous investigators. Although te...

Although we are mostly unaware of the fact that our eyes move several times per second, the way we perceive the world depends to a large extent on the exact scan paths our eyes describe. Indeed, recent studies have impressively shown that even substantial changes to a visual display can go unnoticed if the observer’s attention is directed somewhere else. Therefore, one of the goals of the Infor...

In this paper, we proposed a novel classifierbased object tracker which combined a rectangular features based adaboost detector with optical-flow based tracking method, Support Vector Tracker. We show that gradient of extended rectangular features can be calculated rapidly by using integral image method. The proposed tracker was tested on real video sequences. We applied our tracker for face tr...

A method for Positron Emission Particle Tracking (PEPT) based on optical feature point identification techniques is demonstrated for use in low activity tracking experiments. A population of yeast cells of approximately 125,000 members is activated to roughly 55 Bq/cell by 18F uptake. An in vitro particle tracking experiment is performed with nearly 20 of these cells after decay to 32 Bq/cell. ...

Many Augmented Reality applications require accurate tracking. Existing tracking techniques require prepared environments to ensure accurate results. This paper motivates the need to pursue Augmented Reality tracking techniques that work in unprepared environments, where users are not allowed to modify the real environment, such as in outdoor applications. Accurate tracking in such situations i...