منابع مشابه
Conformal carpet and grating cloaks.
We introduce a class of conformal versions of the previously introduced quasi-conformal carpet cloak, and show how to construct such conformal cloaks for different cloak shapes. Our method provides exact refractive-index profiles in closed mathematical form for the usual carpet cloak as well as for other shapes. By analyzing their asymptotic behavior, we find that the performance of finite-size...
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A wide range of transformation media designed with conformal mapping are currently being studied extensively due to their favorable properties: isotropy, moderate index requirements, low loss and broad bandwidth. For optical frequency operation, the transformation media are commonly fabricated on high index semiconductor thin films. These 2D implementations, however, inevitably introduces waveg...
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Grating cloaks are a variation of dielectric carpet (or ground-plane) cloaks. The latter were introduced by Li and Pendry. In contrast to the numerical work involved in the quasi-conformal carpet cloak, the refractive-index profile of a conformal grating cloak follows a closed and exact analytical form. We have previously mentioned that finite-size conformal grating cloaks may exhibit better cl...
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Non-photorealistic rendering (NPR) has been used to produce stylized images, e.g., in a stippled or painted style. To evaluate NPR algorithms, similarity measurements used in image processing have been employed to assess the quality of rendered images. However, there is no standard objective measurement of stylization quality. In many cases, raw side-by-side comparisons are used to demonstrate ...
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In this paper we present a complete pipeline for image based modeling of objects using a camcorder or digital camera. Our system takes an uncalibrated sequence of images recorded around a scene, it automatically selects a subset of keyframes and then it recovers the underlying 3D structure and camera path. The following step is a volumetric scene reconstruction performed using a hardware accele...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2009
ISSN: 1094-4087
DOI: 10.1364/oe.17.019328