|The common approach to radial distortion is by the means of polynomial approximation, which introduces distortion-speci c parameters into the camera model and requires estimation of these distortion parameters. The task of estimating radial distortion is to nd a radial distortion model that allows easy undistortion as well as satisfactory accuracy. This paper presents a new class of rational r...

The problem of asymptotic (i.e., low-distortion) behavior of the rate-distortion function of a random vector is investigated for a class of non-diierence distortion measures. The main result is an asymptotically tight expression which parallels the Shannon lower bound for diierence distortion measures. For example, for an input-weighted squared error distortion measure d(x; y) = kW(x)(y ? x)k 2...

In this paper an optimal boundary encoding algorithm in the rate-distortion sense is proposed. Second-order Bspline curves are used to model object boundaries. An additive area distortion measure between the original boundary and its approximation is employed in the optimazation process. The problem is formulated in a Directed Acyclic Graph (DAG) paradigm, and the shortest path solution is used...

In general, it is desirable to finish the weld quickly, before a large volume of surrounding metal heats up and expands. The welding process used, type, welding current and speed of travel, thus, affect the degree of shrinkage and distortion of a weldment. The use of mechanized welding equipment reduces welding time, metal affected zone and consequently distortion. This article helps to define ...

We consider an information update system where receiver requests updates from provider in order to minimize its age of information. The are generated at the (transmitter) as a result completing set tasks such collecting data and performing computations on them. refer this generation process. model ...

Its wide dynamic range makes the spectrum analyzer the test instrument of choice for measuring harmonic distortion, intermodulation distortion, adjacent channel power ratio, spurious-free dynamic range, gain compression, etc. Distortion measurements such as these are bounded on one side by the noise floor of the spectrum analyzer and on the other side by the signal power strength at which the s...

| Common approach to radial distortion is by the means of polynomial approximation, which introduces distortion-speci c parameters into the camera model and requires estimation of these distortion parameters. The task of estimating radial distortion is to nd a radial distortion model that allows easy undistortion as well as satisfactory accuracy. This paper presents a new radial distortion mode...