D. Cymbalak

Visual system for student attendance monitoring with non-standard situation detection

In this paper we propose a visual system for monitoring of student attendance in seminars and lectures. Basic idea is to estimate the number of people in the room using face detection algorithms and subsequently utilize face recognition algorithms to determine the actual identification of persons (students). Presented approach may be used for multiple purposes. Principal and primary purpose is to monitor attendance, which is possible thanks to university database. When implemented, system is expected to evaluate the attendance automatically or if necessary using collaborative authentication. Non-standard or anomaly detection is another feature that is to be provided by system, subject to tracking are hands, eyes and movement. Proposed solution is expected to improve and facilitate attendance monitoring of students at seminars and lectures. Further it may be used for anomaly prevention (e.g. cheating) and in specific cases for security or legal matters.

Kinect as a tool in estimation of selected human body dimensions

The aim of this paper the extraction of human body dimensions using the latest Microsoft Kinect device. Another focus is the analysis of various application of this device in specific branches of science and research and its application in estimation of dimensions. Brief analysis of the device itself is carried out as well. The principal output of this paper the software application that utilizes data from Microsoft Kinect sensor in order to estimate the height of human body as well as the length of its limbs. Further comparison between both generations of Kinect devices is carried out.

Effective collaborative environment with live broadcasts using Slovak National telepresence infrastructure

This paper introduces deployment, operation and technological challenges of project named National telepresence infrastructure to support research, development and technology transfer in Slovakia (NTI), which was managed by Slovak Centre of Scientific and Technical Information. NTI is effective collaborative environment with not only videoconferencing ability but it dispone also live broadcast functions, recording to multimedia archive or automatic conference booking system. Overall infrastructure consists of core layouts, web platform and over two hundred collaborative endpoints, which will be described in solution design. After one and half year of pilot operation the NTI shows trends of usage among research, development and innovation institutions. The paper shows also examples of real usage of live broadcasts ability of NTI.

Dimensional unit as an aid in students identification

The aim of this paper is the proposal of the solution that is to enable identification of students based on their height and facial dimensions of specific face elements. Analysis of approaches that allow estimation of the height from the image is presented. Following the analysis, the experimental software solution is developed and consisted of two applications. The first enables the estimation of the height of a person standing in front of a video camera. Final prototype of the solution utilizes the technique of background subtraction from the foreground with the aim to separate of the object of interest. The ArUco marker is used as a reference object to allow exact height estimates. The second application follows the detection of a face and extracts the distance ratio among specific features of a face.

Tracking the object features in video based on OpenCV

The aim of this paper is the design and implementation of a solution for monitoring of the properties of an object, specifically a human hand in the video. Solutions available today require for their operation some special hardware, such as a depth sensor. The system described in this paper aims to acquire the properties of the object only with the aid of commercially available camera equipment. The designed system processes input data in real time, where the data are read from locally stored file or from a connected camera device. The solution itself serves as an interface between a man and a computer, and allows control the other programs by analysis and processing of the image of human hand. The solution is providing the output in several ways. The proposed tool is developed as an application, having well-designed graphical user interface, which to some extent makes control of the different variables affecting the process of processing of the input data.

Estimation of camera intrinsic matrix parameters and its utilization in the extraction of dimensional units

In this paper the elimination of image distortion and subsequent estimation of intrinsic camera parameters, while extracting the real object dimensions from photographs is presented. Research analysis includes description of the basic concepts related to the camera calibration. Following the analysis, the most suitable calibration method has been chosen and implemented as a software solution. The output of the research is the software application, which enables estimation of intrinsic camera parameters and subsequent elimination of image distortion. The most valuable is the extraction of dimensional units of the real object in the photographs.

Innovative methodology and implementation of simulation exercises to the Computer networks courses

In this paper the development of simulation exercises used in blended learning are presented and further two methodologies are introduced, discussed and comparative analysis is to be carried out, pointing out the main differences. First methodology was applied on the sample of fifty students, the latter on the same number of students. Information technology tools were utilized in both methodologies, these represent the configuration exercises and online material available during the exercises. Two categories of these were created, the first were used throughout the term and the second was the final exercise. The principal advantage of our solution is the possibility of utilizing the exercises in the educational process, localization of the exercises in the Slovak language, availability for students and traceability of topics and issues included within the CCNA courses.

Approaches and measures to enhancement of computer networks courses

In this paper are presented the approaches and measures taken in order to enhance the learning process of computer networks. During research described in this paper we take into the consideration primarily traditional form of education, i.e. active presence of student at the institution. Enhancement itself lies in the elimination of system testing and its replacement with testing on the real devices. Overall experience brings promising results and improvement in the educational process.

Live broadcast of events with best shot on speaker using tracking methods on audience's mobile phones

The paper deals with the concept of solution for realization of live broadcasts of events with best shot on tracked object using contribution of audience in form of using mobile phones such as streaming and object tracking device. The overall concept consist of two phase, which handle the choosing of mobile device with best shot on speaker in real time based on object tracking methods and also with mechanism for switching video source for resulting stream based on previous evaluation. Paper focuses also on implementation and testing of video stream switching application as a separate part of overall designed solution.

Access to CNL Videoserver educational content using mobile device

This paper present work of a diploma student in a field of mobile streaming. By creation of freely available software solution now it is easy to access hundreds of videos stored in Videoserver archive using mobile phone. Paper presents Videoserver as a complex platform with extended functionality widely used by students of Technical University in Kosice and thousands of other internet users. Article also deals with Videoserver extension to iPhone using dedicated web interface. Computer Networks Laboratory provides high quality content in modern ways including new architecture created and tested within the laboratory.