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Obtaining underground information using wireless−based sensor networks is a new field of research. This information will be beneficial in the areas of mining, farming, military, disaster management, and several others. Successful implementation of ...

In this paper, we investigate absolute and relative pose estimation under refraction, which are essential problems for refractive structure from motion. To cope with refraction effects, we first formulate geometric constraints for establishing ...

In the article, we analyzed the relevance of control of liquid food products. Provided the rationale for the use of methods for controlling liquid food products for industry (continuous control of the manufacture of liquid food products flowing through ...

Due to the enormous application, handwritten digit recognition (HDR) has become an extremely important domain in optical character recognition (OCR)-related research. The predominant challenges faced in this domain include different photometric ...

• A split-step wavelet method is introduced to model the long-range wave propagation.

A split-step wavelet method for simulating the long-range wave propagation is introduced. It is based on the fast wavelet transform. Compared to the split-step Fourier method, this method improves the computation efficiency while ...

The match cost of Rete [8] increases significantly and approximately linearly with the number of rules [2]. A major part of that cost is the eager creation of cross products within the join nodes in an attempt to materialize rule instantiations. ...

An obvious way to simulate a Lévy process X is to sample its increments over time 1 / n, thus constructing an approximating random walk $$X^{(n)}$$X(n). This paper considers the error of such approximation after the two-sided reflection map is applied, ...

This paper addresses the problem of reconstructing the surface shape of transparent objects. The difficulty of this problem originates from the viewpoint dependent appearance of a transparent object, which quickly makes reconstruction methods tailored ...

This paper presents mathematical modeling for combined attenuation response of acoustic signal travelled through multiple sink nodes from a source node to a destination node for shallow water applications. The link was considered for an imaginary ...

In this paper we address the problem of locating a new facility on a d-dimensional space when the distance measure ($$\ell _p$$ℓp- or polyhedral-norms) is different at each one of the sides of a given hyperplane $$\mathcal {H}$$H. We relate this problem ...

This paper presents an efficient approach to render refracting transmissive objects with multi-scale surface roughness, under distant illumination. To correctly capture both fine-scale surface details and large-scale appearances, and enable real-time ...

We apply boundary integral equations for the first time to the two-dimensional scattering of time-harmonic waves from a smooth obstacle embedded in a continuously-graded unbounded medium. In the case we solve, the square of the wavenumber (refractive ...

Routing is a fundamental function of any wireless network. For battery-powered underwater sensors using

acoustic waves, routing is even more challenging due to an ever changing and communication-opaque

ocean. Herein, we propose a shallow-water routing ...

This paper describes a multi-camera system designed for capture and tracking of swimmers both above and

below the surface of a pool. To be able to measure the swimmerâ s position, the cameras need to be accurately

calibrated. Images captured below the ...

In this paper, we present an enhanced subsurface light propagation volumes (ESLPV) method for real-time rendering of translucent materials. Our method is an extension of the subsurface light propagation volumes (SSLPV) (Proceedings of the ACM SIGGRAPH ...

Efficient and stable numerical solvers for vector tomography problems taking refractions into account are subject of current research. This article is concerned with the problem of reconstructing a 2D-vector field in a refracting medium from its known ...

This paper is aimed at presenting a new virtual camera model which can efficiently model refraction through flat housings in underwater photography. The key idea is to employ a pixel-wise virtual focal length concept to encode the refractive projection ...

In this paper, we introduce a novel method for depth acquisition based on refraction of light. A scene is captured directly by a camera and by placing a transparent medium between the scene and the camera. A depth map of the scene is then recovered from ...

On the research of flying simulators, abundant study and successful application of the illuminating models of different nature conditions such as the ocean, the terrain and the plants. In this paper, the author discuss the illuminating models of road ...

Darcian steady 2-D flow to a point sink (vertical well) placed eccentrically with respect to two circles demarcating zones of contrasting permeability is studied by the methods of complex analysis and numerically by MODFLOW package. In the analytical ...