Tento článek popisuje prapočátek metod používanych dnes zcela běžně v oblasti paralelního progrmování. zaměřuje se zejména na objevení efektivního algoritmu distribuce dat ve výpočetních clusterech a na dvě dnes nejpoužívanější metody pro ochranu zdrojů sdílených více paralelními procesy. ...

C-Sim is a programming tool for simulation of discrete processes using a method of pseudoparallel processes. It is an extension of ANSI C language obtained by including a library of SIMULA-like types and functions packed within several program modules. The typical application area...

With increasing power of today’s computers, the Java programming language is more and more chosen by developers as the implementation language of various types of software. The wide range of applications also include concurrent multithreaded programs. However, programming, analyzing and&#x...

This work presents a strategy for creating a CAD model of an existing physical object from a scanned point cloud containing badly scanned regions. This strategy can be applied for pr ocessing big clouds. Formalization of properties of point clouds and surface reconstruction a...

At present, 3D retrieval systems that are content-based become very popular. In these systems similar models from a database are retrieved in accordance with a form of a template model. In an early era text-based retrieval systems were designed. These systems assign keywords...

A new trend in the usage of functional modeling in computer science has been formed during several last years. One of the basic fields developing in a lot of departments is modeling with the implicitly defined objects. The implicit definition (in contrast to the parametr...

Multidimensional volumetric data are often used for storing information in various fields of science such as physics, astronomy etc. because they best match the character of the underlying phenomena. The information contained in such data is, however, usually very dense and ...

The surface reconstruction from cloud of points is a problem, which can be encountered in many applications, from reverse engineering through CAD to ecommerce. It has become more important in the past years, when the scanning devices have become cheap enough to be available to...

Both object modeling and visualization belong to the fundamental tasks of the computer graphics. In recent years, implicit modeling has become attractive. Because of the fact that the implicit surfaces conveniently define volumes, they are frequently used in CSG-based solid modelers. The...

At present, many devices produce the volume data as their output. The well-known data acquisition tools are e.g. MRI, CT or PET scanners, which are used mainly in the medical field. The volume data can represent density, velocity, humidity etc. in the form of structured o...

Software modules and components have always played a key role in software engineering, primarily as key abstractions that embody the principle of information hiding. Modelling components is an increasingly important task, especially with the current interest in model-driven development and server...

The old-fashioned search engine model based usually on Boole´s algebra has become outdated. Current systems tend to meet users (customers) needs more precisely and hence they have to improve their basis. The searching process has to be based on deeper knowledge of individual user&#...

The surface reconstruction is a common problem in a modern computer graphics, there are many applications which need to work with a piecewise linear approximation of the existing real 3D objects. One of the methods for acquiring these models is the digitization of the&#...

This paper presents a model based method of testing and verification of Java concurrent control programs aimed for embedded devices. Threads of the control program are mapped onto simulation processes that can be executed using discrete model-time concept. The computer surrounding envi...

This thesis gives an overview of parallel techniques used in co mputer graphics. It investigates the problems of work distribution, load balancing, communication traffic reduction and merging of subsolutions. These problems a re discussed in the relation to parallel rendering, t...

Rendered stereoscopic scenes suffer from a scaling problem, which causes major restrictions on their portability to other stereoscopic display mediums. A main solution for this problem is presented, as well as other complementary solutions. Also, the basics of depth perception are pres...

Web mining is a newly emerging r esearch area concerned with analyzing the World Wide Web. It is concerned mainly with its content, structure and usage. As the Web is the largest storehouse of knowledge of our time it has become&#x...

In the begging, graphic hardware was utilized only to convert binary information to display device. Through its evolution, it gained capabilities and last improvement enhanced it so far that it can be considered as a next processing unit. Thus, this document concerns &...

Morphing or metamorphosis is a technique for shape transformation between two objects. It smoothly transforms the shape of the source object to the shape of the target object. Morphing is usually used as an animation technique, for creation of some special effects, but it...

This paper describes the very first version of the UWB/ Apogee RMA Toolkit. The goal of the toolkit is to provide a simulation-based way to verify schedulability properties of real-time Java programs. The initial version described in this paper - version 0.1.0 - is...