This paper describes research into the development of techniques to build effective Topic Tracking systems. Topic tracking involves tracking a given news event in a stream of news stories i.e. finding all subsequent stories in the news stream that discuss the given event. This research has grown out of the Topic Detection and Tracking (TDT) initiative sponsored by DARPA. The paper describes the...

Over the last decade, eye tracking systems have been developed and used in many fields, mostly to identify targets on a screen, i.e. a plane. For novel applications such as the control of robotic devices by the user vision, there is a great interest in developing methods base on eye tracking to identify target points in free three dimensional environments. The objective of this paper is to char...

—Objects in the world exhibit complex interactions. When captured in a video sequence, some interactions manifest themselves as occlusions. A visual tracking system must be able to track objects which are partially or even fully occluded. Occlusion is a difficult problem in target tracking, especially when users need to track multiple targets simultaneously and maintain the target identities du...

Over a number of years the authors have developed various methods for real-time tracking objects or tracking mobile cameras, both of which are essential precursors for many applications, not least augmented reality tasks. Though many algorithms for visual tracking are content with simply reporting a 2D x-y position in the image, a richer set of applications is available when the full pose of th...

Due to the desire for constant improvement of the quality of passenger traffic vibration comfort has become a very important parameter when designing vehicles. Occupants are constantly exposed to vibration caused by interaction between vehicle and road vibration and whose source is in the vehicle, such as motor cars. This work is focused on the measurement of vibration due to interaction with a...

In this paper, through the research on two-dimensional bar codes of food source tracking; a set of traceability tracking system was designed based on the two bar coding algorithm and decoding algorithms. This system could generate PDF417 code based on food production, logistics and transport, supermarket and other storage information. Consumers could identify PDF417 code through a client based ...

Previous efforts in eye gaze tracking either did not consider head motion, or considered the 6 DOF head motions with multiple cameras or light sources. In this paper, we show that it is possible to track eye gaze under naturally head rotations(Yaw and Pitch) with only an ordinary webcam. We first carry out a study to examine the occurrence of eye-head coordination, and then show how to track su...

Target track is an important research dot in weapon performance testingfiled, to stable track the flying target in optical detection system and testing instrument, horizontal trajectory tracking system based on rotating mirror was researchedin this paper.A horizontal trajectory tracking method was proposed for the tracking problem in the process of the projectile flight, the design of rotating ...

he rolled his eyes and asked me, " Why 36? What is the significance of 36? " I explained that when I realized we could not have a successful beta with the current software stability, I wanted the team to realize just how many defects we were dealing with. A real number of defects would do this because this team didn't think in terms of other defects, just the one they were working on. The team ...

Designing tracking systems that cover large indoor areas and encompass different sensor modalities pose many significant challenges such as multi-sensor data fusion, coordinate system handoff and associated transformations. In this paper, we present the design and implementation of a prototypical system that effectively tackles these challenges. The proposed system is empirically validated in a...