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Detecting and tracking people in video have a wide variety of applications in computer vision. However the development of robust methodologies for these purposes are challenging due to complexity of the scenes. In this paper, we propose a real-time algorithm for people detection and tracking by tridimensional depth estimation in indoor environment. The approach is based on people detection and stereo...
This paper proposes a 3D real-time video-teleconferencing system over IP broadband networks. The video capturing uses two synchronized cameras positioned side by side in front of the person who will communicate, in order to compute his or her three dimensional information to be transmitted to the remote side. The system also has a module for IP transmission of audio and video, and a module for 3D...
The digitalization of terrestrial television broadcasting systems has been carried out in many countries around the world. Replacing the previous analogue video signal by the high-definition digital video has provided several technical benefits to the population, and nowadays it is an irreversible change. In Brazil, this process began in 2007, when the first terrestrial broadcasting of digital television...
In digital television systems, measurements of transmission parameters are important basis for services expansion an planning. This paper presents results of field measurements of DTV broadcasting parameters for multimedia transmission analysis of the ISDB-TB system. The measurements were carried out in a Brazilian city, and allow the analysis of main broadcasting features used in DTV channels. Broadcasting...
This paper presents an analysis of stereoscopic 3DTV broadcasting in ISDB-T International system, which is a terrestrial television system used in Brazil. Although 3DTV sets are well deployed, the 3DTV broadcasting services are not regulated in this market yet. We present results of a Side-by-Side 3D video broadcasting analysis with objective video quality parameters.
This paper presents a system for the capture and the composition of three-dimensional video with firewire cameras. We have developed a software application for capturing synchronized video, so that a couple of videos corresponding to the right and left eyes can be recorded in the hard disk. The main features of this application are: the execution of camera calibration procedure, the correction of...
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