Adam L. Kaczmarek

Gdansk University of Technology · Faculty of Electronics, Telecommunications and Informatics

This paper presents a system which facilitates discovering knowledge about cultural objects. The system is based on semantic modeling of a virtual museum which consists of cultural objects placed in a virtual 3D space. The article describes an extension to the concept of cultural objects which includes information on the use of these objects. This...

This paper concerns clustering-by-directions algorithm. The algorithm introduces a novel approach to interactive query expansion. It is designed to support users of search engines in forming Web search queries. When a user executes a query, the algorithm shows potential directions in which the search can be continued. This paper describes the algor...

Obtaining high-quality depth maps and disparity maps with the use of a stereo camera is a challenging task for some kinds of objects. The quality of these maps can be improved by taking advantage of a larger number of cameras. The research on the usage of a set of five cameras to obtain disparity maps is presented. The set consists of a central cam...

This paper presents a method of improving the estimation of distances between an autonomous harvesting robot and plants with ripe fruits by using the vision system based on five cameras. The system is called Equal Baseline Multiple Camera Set (EBMCS). EBMCS has some features of a camera matrix and a camera array. EBMCS is regarded as a set of stere...

This paper is concerned with applying a stereo matching algorithm called BP-Layers to a set of many cameras. BP Layers is designed for obtaining disparity maps from stereo cameras. The algorithm takes advantage of convolutional natural networks. This paper presents using this algorithm with a set called Equal Baseline Camera Array. This set consist...

This paper presents research on 3D scanning by taking advantage of a camera array consisting of up to five adjacent cameras. Such an array makes it possible to make a disparity map with a higher precision than a stereo camera, however it preserves the advantages of a stereo camera such as a possibility to operate in wide range of distances and in h...

This paper is concerned with making 3D scans of semitransparent ambers with and without inclusions. The paperpresents results of using a variety of devices applied for this purpose. Equipment used in the experiments includesa 3D laser scanner, a structured light scanner, a stereo camera, a camera array and a tomograph. The main objectused in the ex...

This paper is concerned with making 3D scans of semitransparent ambers with and without inclusions. The paper presents results of using a variety of devices applied for this purpose. Equipment used in the experiments includes a 3D laser scanner, a structured light scanner, a stereo camera, a camera array and a tomograph. The main object used in the...

This paper presents a lightweight 3D vision system called Equal Baseline Camera Array (EBCA). EBCA can work in different light conditions and it can be applied for measuring large range of distances. The system is a useful alternative to other known distance measuring devices such as structured-light 3D scanners, time-of-flight cameras, Light Detec...

This paper describes methods for making 3D scans of building interiors. The main application of these methods is the development of first-person view (FPV) perspective games or creating virtual museums. 3D scans can be made with the use of different equipment such as Light Detection and Ranging (LIDAR), time of flight (TOF) cameras and structural l...

This paper proposes a new approach to the reconstruction of building interiors based on stereo-photogrammetry. The proposed technology can be used, among others, for modeling rooms for video games whose action takes place in locations reflecting real interiors. The original, large-scale experiment showed that the proposed approach is economically j...

This paper is concerned with obtaining disparity maps on the basis of images from Equal Baseline Multiple Camera Set (EBMCS). EBMCS consists of a central camera and side cameras. Algorithms for obtaining disparity maps with the use of EBMCS take advantage of aggregating windows similarly to stereo matching algorithms for a stereo camera, a camera m...

This paper introduces the Music Clustering by Directions (MCBD) algorithm. The algorithm is designed to support users of query by humming systems in formulating queries. This kind of systems makes it possible to retrieve songs and tunes on the basis of a melody recorded by the user. The Music Clustering by Directions algorithm is a kind of an inter...

This paper is concerned with storing music data with the use of document architecture called Interactive Open Document Architecture (IODA). This architecture makes it possible to create documents which are executable, mobile, interactive and intelligent. Such documents consist of many files that are semantically related to each other. Semantic link...

The paper is concerned with estimating the believability of data acquired from web services. In the paper, a new method for believability estimation is introduced. The method is designed for integrating web services. The believability estimation is based on the following metrics: quantity, reputation, approval, independence, traceability, maturity,...

The paper is concerned with a new type of user interface to search engines. Instead of presenting search results in a form of a ranked list, the results are presented in radial arrangement. In the center of the interface the most relevant web page is presented. Other web pages are located around the central one. The location of a web page depends o...

This paper concerns formulating ontology queries. It describes existing languages in which ontologies can be queried. It focuses on languages which are intended to be easily understood by users who are willing to retrieve information from ontologies. Such a language can be, for example, a type of controlled natural language (CNL). In this paper a n...

This article describes a novel algorithm called clustering by directions. This algorithm is designed to create a list of words which serve as suggestions for users of search engines how to modify their current search query. The algorithm focuses on preparing various suggestions. It concerns modifying queries by adding more words to them. A list of...

,This article presents a novel ,algorithm for automatic estimation of information ,credibility. It concerns