This paper reports on the development of a new eye-tracking system for noninvasive recording of eye movements. The eye tracker uses a flying-spot laser to selectively image landmarks on the eye and, subsequently, measure horizontal, vertical, and torsional eye movements. Considerable work was required to overcome the adverse effects of specular reflection of the flying-spot from the surface of ...

The present ATLAS silicon strip tracker (SCT) and transition radiation tracker (TRT) are to be replaced with new silicon strip detectors as part of the inner tracker system (ITK) for the Phase-II upgrade of the Large Hadron Collider, HL-LHC. We have carried out intensive R&D programs based on n-on-p microstrip detectors to fabricate improved radiation hard strip detectors that can survive the r...

The neural extended Kalman filter is a technique that learns unmodelled dynamics while performing state estimation. This coupled system performs the state estimation of the plant while estimating a function approximation of the difference between the system model and the dynamics of the true plant. At each sample step, this approximation is added to the existing model improving the state estima...

Tracking people using movie sequences is not straightforward because the human body is articulated (and therefore far from rigid), parts of the body are frequently occluded by other parts, and video data is inevitably degraded by noise. In this paper we show how a person’s 3D pose can be tracked by using corresponding silhouette moments from video sequences. The moment computation has been impl...

In order to facilitate the extraction of quantitative data from live cell image sets, automated image analysis methods are needed. This paper presents an introduction to the general principle of an overlap cell tracking software developed by the National Institute of Standards and Technology (NIST). This cell tracker has the ability to track cells across a set of time lapse images acquired at h...

This paper addresses feature tracking when frame-toframe motion is too large that the popular pyramidal Kanade-Lucas-Tomasi (KLT) feature tracker does not work. To solve this problem, we estimate the motion at the deepest pyramid level by matching the horizontal (and vertical) characteristic curves of the consecutive images. To compute the motion estimates efficiently and effectively, we use dy...

The paper discusses the development of an unmanned aerial vehicle (UAV) based optical system for tracking individual Australian plague locusts. Managing and monitoring of locust swarms is important for minimising damage to agriculture, and the optical tracker combines the benefits of aerial photography and tagged insects to help with this process. Optical transponders are attached to the upper ...

We propose a hybrid tracking algorithm consisting of two trackers built on grayscale appearance models. In a first tracker we employ an object template that consists of several grayscale image patches. Every patch votes for the possible positions of the object undergoing tracking. A grayscale appearance model that is learned on-line is used in a supplementing tracker. A particle swarm optimizat...

ALEPH and DELPHI were the first experiments operating a silicon vertex detector at LEP. During the past 10 years of data taking the DELPHI Silicon Tracker was upgraded three times to follow the different tracking requirements for LEP 1 and LEP 2 as well as to improve the tracking performance. Several steps in the development of the pattern recognition software were done in order to understand a...

In the CMS central tracker, the LHC clock and the first level trigger decisions are distributed encoded as a single signal. This paper describes an ASIC for clock recovery and first level trigger decoding to be used in the tracker data acquisition and slow control systems. The IC was implemented in a 0.25 Pm CMOS technology using a rad-tolerant layout. It recovers the clock and trigger signals ...