Technical Reports

A List by Author: Ivan Kopeček

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Detection and Annotation of Graphical Objects in Raster Images within the GATE Project

by Ivan Kopeček, Radek Oslejšek, Jaromír Plhák, Fedor Tiršel, December 2008, 16 pages.

FIMU-RS-2008-10. Available as Postscript, PDF.


This report presents a brief outline of the GATE (= Graphics Accessible to Everyone) project architecture and an analysis of some problems and approaches connected to the detection and annotation of graphical objects in raster images. It also mentions some experiments concerning the object detection and annotation. Some examples and illustrations are presented as well.

Modelling Dialogue Systems by Finite Automata

by Ivan Kopeček, Libor Škarvada, March 2003, 13 pages.

FIMU-RS-2003-01. Available as Postscript, PDF.


Based on finite state formalization, this paper deals with the problem of modelling and automatic programming of dialogue systems. The approach presented here is based on finding an operator (a construction) that assigns a corresponding dialogue system to a dialogue corpus. It will be shown that this construction is universal, in the sense that each dialogue system can be obtained in this way, and some related issues (uniqueness, algorithmization and algorithmical complexity) will be briefly discussed. The theory is illustrated on a simple example. Some related problems are formulated.

The Architecture of the Blind User Oriented Hypertext AUDIS

by Ivan Kopeček, February 1998, 7 pages.

FIMU-RS-98-01. Available as Postscript, PDF.


The architecture of the blind user oriented hypertext AUDIS developed at the Faculty of Informatics, Masaryk University Brno, is described in the paper. AUDIS is developed primarily as a support, which would help visually impaired students to study various materials. It can also serve as an Internet browser.

PHC Format Description

by Pavel Frýda, Ivan Kopeček, November 1997, 6 pages.

FIMU-RS-97-07. Available as Postscript, PDF.


The paper contains the presentation of a data format for phonetic corpora called PHC format and proposal of library of utilities designed for manipulation with PHC format.

Navigation and Information System for Visually Impaired People

by Ivan Kopeček, Pavel Smrž, May 1997, 7 pages.

FIMU-RS-97-05. Available as Postscript, PDF.


Orientation is one of the most important problems of visually impaired people. The aim of this paper is to suggest a contribution to the solution of this problem using computer technology. The basic idea is the detection of motion and orientation using sensors and consequent position identification. The detected trajectory is compared with a map and is corrected by means of the algorithm described in the paper. Some problems concerning sensor detection of human motion are also discussed. Based on the determined position other relevant information is provided to the user of system (information describing the neighbourhood of the actual position, optimal way to the chosen destination, possible warnings).

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