نتایج جستجو برای: three dimensional characteristics
تعداد نتایج: 2094037 فیلتر نتایج به سال:
We present a method to directly image fluorescent structures inside turbid media. This is based on wave-front shaping to optimize the scattered light onto a single fluorescent particle, as the optical memory effect for a scanning image of the surroundings of this particle. We show that iterating the optimization leads to the focusing on a single particle whose surroundings are subsequently scan...
In this paper, we present a new method for face recognition using range data. The proposed method is based on both global statistics of geometrical features and local statistics of correlative features of facial surfaces. Firstly, we analyze the performances of common geometrical representations by using global histograms for matching. Secondly, we propose a new method to encode the relationshi...
geboren te Breda. This work was carried out in the ASCI graduate school. ASCI dissertation series number 194.
Optical impulse-response characterization of diffusive media can be of importance in various applications, among them optical imaging in the security and medical fields. We present results of an experimental technique that we developed for acquiring the impulse response, based upon the Kramers-Kronig algorithm, and have been applied for optical imaging of objects hidden behind clothing. We demo...
Roberto M. Lang, MD, FASE,* Luigi P. Badano, MD, FESC, Wendy Tsang, MD,* David H. Adams, MD,* Eustachio Agricola, MD, Thomas Buck, MD, FESC, Francesco F. Faletra, MD, Andreas Franke, MD, FESC, Judy Hung, MD, FASE,* Leopoldo P erez de Isla, MD, PhD, FESC, Otto Kamp, MD, PhD, FESC, Jaroslaw D. Kasprzak, MD, FESC, Patrizio Lancellotti, MD, PhD, FESC, Thomas H. Marwick, MBBS, PhD,* Marti L. McCullo...
Computer imaging techniques are commonly used to preserve and share readable manuscripts, but capturing writing locked away in ancient, deteriorated documents poses an entirely different challenge. This software pipeline-referred to as "virtual unwrapping"-allows textual artifacts to be read completely and noninvasively. The systematic digital analysis of the extremely fragile En-Gedi scroll (t...
An integral imaging system is employed as part of a three dimensional imaging system, allowing display of full colour images with continuous parallax within a wide viewing zone. A novel approach to the problem of compressing the significant quantity of data required to represent integral 3D video is presented and it is shown that the reduction in bit cost achieved makes possible transmission vi...
Left atrial size and function are very important prognostic factors. Our aim was to evaluate left atrial size, function and mechanical synchrony using three-dimensional echocardiography in order to establish normal reference values. The study involved 63 healthy individuals enrolled at two hospitals. All underwent two-dimensional and three-dimensional echocardiography. Mechanical asynchrony was...
Structured-light illumination is a process of three-dimensional imaging where a series of time-multiplexed, striped patterns are projected onto a target scene with the corresponding captured images used to determine surface shape according to the warping of the projected patterns around the target. In a real-time system, a high-speed projector/camera pair is used such that any surface motion is...
We demonstrate three-dimensional imaging of antiprotons in a Penning trap, by reconstructing annihilation vertices from the trajectories of the charged annihilation products. The unique capability of antiparticle imaging has allowed, for the first time, the observation of the spatial distribution of the particle loss in a Penning trap. The radial loss of antiprotons on the trap wall is localize...
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