In this article, perfectly matched layer (PML) for the boundary treatment and an efficient compact two dimensional finite-difference frequency-domain (2-D FDFD) method were combined to model photonic crystal fibers (PCF). For photonic crystal fibers, if we assume that the propagation constant along the propagation direction is fixed, three-dimensional hybrid guided modes can be calculated by us...

In this paper, an image resolution enhancing technique is described. It is based on extracting 1-dimensional characteristic curves from subsequent frames and sub-pixel displacement values. Through sub-pixel mapping and adaptive interpolation, high-resolution image can be obtained from several lowresolution image frames. This 1-dimensional algorithm is simple and cost-effective, and can be easil...

Wesley B. Cardoso,1 Luca Salasnich,2, 3 and Boris A. Malomed4, 5 1Instituto de Fı́sica, Universidade Federal de Goiás, 74.690-900, Goiânia, Goiás, Brazil 2Dipartimento di Fisica e Astronomia “Galileo Galilei” and CNISM, Università di Padova, Via Marzolo 8, 35131 Padova, Italy 3Istituto Nazionale di Ottica (INO) del Consiglio Nazionale delle Ricerche (CNR), Sezione di Sesto Fiorentino, Via Nello ...

In this paper, we propose a new three dimensional video coding scheme based on a Phase−based motion estimation, and new three dimensional EZW−IP coder. In the　conventional video coding methods like MPEG/H.26x, hybrid coding scheme using motion estimation and DCT transform is adapted. But actually, these methods use only the temporal correlation of several frames. We pay attention here, a...

partial frames provide a rich context in which to do pointfree structured and unstructured topology. a small collection of axioms of an elementary nature allows one to do much traditional pointfree topology, both on the level of frames or locales, and that of uniform or metric frames. these axioms are sufficiently general to include as examples bounded distributive lattices, $sigma$-frames, $ka...

Grassmannian frames are frames satisfying a min-max correlation criterion. We translate a geometrically intuitive approach for twoand three-dimensional Euclidean space (R2 andR3) into a new analytic method which is used to classify many Grassmannian frames in this setting. The method and associated algorithm decrease the maximum frame correlation, and hence give rise to the construction of spec...