Results 231 to 240 of about 108,344 (263)
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SPIE Proceedings, 2008
Enhanced tracking is accomplished by increasing the resolution, frame rate and processing capabilities in tracking dynamic regions of interest for vision applications. In many proven algorithms, the ability to distinguish an object and track it is dependent on the system performance in more than one attribute.
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Enhanced tracking is accomplished by increasing the resolution, frame rate and processing capabilities in tracking dynamic regions of interest for vision applications. In many proven algorithms, the ability to distinguish an object and track it is dependent on the system performance in more than one attribute.
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Optical tracking using commodity hardware
2008 7th IEEE/ACM International Symposium on Mixed and Augmented Reality, 2008We describe a method for using Nintendo Wii controllers as a stereo vision system to perform 3D tracking or motion capture in real time. Commodity consumer hardware allows a wireless, portable tracker to be created that obtains accurate results for a fraction of the cost of conventional setups.
Simon Hay +2 more
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Tracking DDS for coherent optical links
2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC), 2013We report on the design and the realization of a digital architecture based on a tracking direct digital synthesizer (DDS) driven by a Field Programmable Gate Array (FPGA) for the implementation of a coherent optical link for time and frequency dissemination.
Calosso C. E. +7 more
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Optical tracking of single Brownian particles
Applied Optics, 1992A random access scanning microscope system was built to track the Brownian motion of submicrometer colloidal particles in all three dimensions. Transverse tracking resolutions of 20 nm were achieved for 1-ms clock rates. Based on mean-square displacements, the diffusion coefficient and hence the size of the individual particles was determined.
K, Schätzel +3 more
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Double-ended optical beam tracking
Proceedings of 2003 IEEE Conference on Control Applications, 2003. CCA 2003., 2004In this paper, the problem of tracking mobile terminals in wireless optical communication applications is addressed. The problem arises due to the fact that the communication terminals are not stationary; hence the line of sight (LOS) has to be constantly maintained. Since communicating through light requires the terminals to be in LOS with each other,
Murat Efe +4 more
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The optical projection of the tracks of alpha-particles
Journal of Scientific Instruments, 1924A description is given of a modified C. T. R. Wilson-Shimizu apparatus, which enables the tracks of α-particles to be projected on to a screen for the purpose of showing to large audiences.
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Passive optical solar tracking system
Applied Optics, 1983An optical system consisting of a convex reflective sphere or cylinder and a collimating lens is proposed to produce a collimated beam of solar radiation whose direction of propagation varies only slightly over the course of a day. Called a passive optical solar tracking (POST) system, a spherical version of the proposed device has limited usefulness ...
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Optical vehicle tracking - A framework and tracking solution
2004There are a large number of different approaches to vehicle tracking currently available. In this report we look at different problems faced when tracking vehicles, such as background subtraction and vehicle recognition, and look at possible solutions to these.
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Optical Correlator for Star Identification and Tracking
2009Star tracker is one of the most important spacecraft attitude sensors which can achieve accuracies within several arc-seconds utilizing star identification and star tracking. The refresh rate and accuracy of star tracker are constrained as there are so many stars in the sky. A novel star identification and tracking method for star tracker using optical
Hui Jia +6 more
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Optical Truck Tracking for Autonomous Platooning
2015Platooning applications require precise knowledge about position and orientation pose of the leading vehicle. We present an optical solution for a robust pose estimation using artificial markers and a camera as the only sensor. Temporal coherence of image sequences is used in a Kalman filter to obtain precise estimates.
Christian Winkens +3 more
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