We discuss regular production systems as a tool for analyzing tilings in general. As an application we give necessary and sufficient conditions for a generic triangle to admit a tiling of H and show that almost every triangle that admits a tiling is “weakly aperiodic.” We pause for a variety of other applications, such as non-quasi-isometric maps between regular tilings, aperiodic Archimedean t...

Regular map is an algebraic concept to describe most symmetric tilings of closed surfaces of arbitrary genus. All regular maps resp. symmetric tilings of surfaces up to genus 302 are algebraically known in the form of symmetry groups acting on their universal covering spaces. But still little is known about geometric realizations, i.e. finding most symmetric embeddings of closed surfaces and a ...

Experiments observing the liquid surface in a vertically oscillating container have indicated that modeling the dynamics of such systems require maps that admit states at infinity. In this paper we investigate the bifurcations in such a map. We show that though such maps in general fall in the category of piecewise smooth maps, the mechanisms of bifurcations are quite different from those in ot...

There are a variety of 3D Shape estimation methods. Broadly these methods can be classified into three types, namely, Contact, Transmissive and Reflective methods. The “Contact” method is generally based on some physical contact to acquire data while the “Transmissive” method is based on sending waves (like electromagnetic radiations, sound waves etc) through a body and recording data because o...

Abs t r ac t It is strongly desired to construct multimedia databases especially of maps or engineering drawings. If these databases are intended to be used really effectively, original drawing images should be recognized as completely as possible. We have been proposed a new framework of the drawing image understanding system to achieve this. This framework has following features: a) the under...

conclusions the layout of whiteboard in classrooms can be effective in causing student’s neck pain. in this study, the suitable height of installation of whiteboard was determined and it is recommended to be used in classrooms. background the mismatch between equipments and anthropometric dimensions of users is one of the issues that can be effective on development of musculoskeletal disorders ...

Since depth-image-based rendering (DIBR) is one of the rendering processes to generate virtual views from the texture image and the depth map, we investigate DIBR as a core technique for threedimensional television. In this paper, we propose a new scheme to generate multi-view images using DIBR. In order to improve visual quality of multiview images at newly exposed areas, we preprocess the dep...

Interactive delivery of multimedia material destined for educational courseware or large reference archives imposes complex constraints on both the delivery system and on the application design. A City in Transition: New Orleans, 1983-86, a cinematic case study of urban change, combines 3 hours of movie sequences; a still frame library of characters, places and maps, mastered on optical videodi...

This paper presents an efficient algorithm for disparity map computation with an adaptive window by establishing two frame stereo correspondence. Adaptive window based approach has a clear advantage of producing dense depth maps from stereo images. In recent years there has not been much research on adaptive window based approach due its high complexity and large computation time. Adaptive wind...

We address the problem of optical light pulses, called dressed pulses, which do not match the stationary pulse profile of a dispersion-managed (DM) fiber system and we theoretically analyze the associated radiation. Comparing hyperbolic-secant, raised-cosine, and Gaussian pulse envelopes, we show that the general radiation figure is highly sensitive to the input pulse profile. As common general...