Improvement of tracking accuracy is an important issue when applying augmented reality to nuclear power plant fieldwork. Tracking accuracy depends highly on the marker arrangement when employing a tracking method using a camera and markers. For those reasons, this study develops a wheel tracking error computation method to compute the tracking error from the marker arrangement and errors in the...

A neural model is developed of how motion integration and segmentation processes compute global motion percepts. Figure-ground properties, such as occlusion, influence which motion signals determine the percept. For visible apertures, a line's extrinsic terminators do not specify true line motion. For invisible apertures, a line's intrinsic terminators create veridical feature tracking signals,...

Tracking moving targets in complex scenes using an active video camera is a challenging task. Tracking accuracy and efficiency are two key yet generally incompatible aspects of a Target Tracking System (TTS). A compromise scheme will be studied in this paper. A fast mean-shift-based Target Tracking scheme is designed and realized, which is robust to partial occlusion and changes in object appea...

We propose a novel automatic tracking system capable of tracking fast-moving, small objects under extreme conditions by using high-speed visual feedback for assessing sperm chemotaxis. The system shows remarkable performance and versatility, good enough for practical use in biology. Experimental results showed that we successfully achieved continuous stable tracking of swimming ascidian spermat...

Ai m: To assess whether or not the parameters of fixed and randomized saccadic movements, of pendular tracking and of optokinetic nystagmus in the digital vectonystagmography may show abnormalities in patients with possible diagnosis of peripheral vestibular dysfunction. Method: 60 patients with dizziness of peripheral vestibular origin, from 12 to 82 years of age, males and females, were evalu...

AIM To assess whether or not the parameters of fixed and randomized saccadic movements, of pendular tracking and of optokinetic nystagmus in the digital vectonystagmography may show abnormalities in patients with possible diagnosis of peripheral vestibular dysfunction. METHOD 60 patients with dizziness of peripheral vestibular origin, from 12 to 82 years of age, males and females, were evalua...

This project aimed at recording a database which can be used as training data for the development of threedimensional statistical models of various human gait styles. The three-dimensional motion data was captured using the IGS-190 motion capture suit from Animazoo, an integrated wireless motion tracking system equipped with inertial sensors. Fourty participants were recorded, walking at severa...

This paper describes the control system analysis and design for the three principal axes of the 2.5 mts SDSS Telescope. The telescope requirements are good tracking performance with errors lower than 165 marcsec rms in the speed range between 0 to 45 arcsec/sec for all the axes. The pointing error is about 2 arcsec rms per axis with a maximum absolute value of 5 arcsec. The telescope has the ad...

This paper addresses how to determine a sufficient frame (sampling) rate for an optical motion tracking system using passive reflective markers. When using passive markers for the optical motion tracking, avoiding identity confusion between the markers becomes a problem as the speed of motion increases, necessitating a higher frame rate to avoid a failure of the motion tracking caused by marker...