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The delivery of 3D immersive media to individual users remains a highly challenging problem due to the large amount of data involved, diverse network characteristics and user terminal requirements, as well as users' context such as their preferences and location. As the number of visual views increases, current systems struggle to meet the demanding requirements in terms of delivery of consistent...
The article describes a novel approach to robotic vision in mobile robot systems. The system implements a Visrobot system which implements a generic idea of using mobile robots for exploring an indoor environment. The task of such a robot is to visualize a stereo image properly for an operator. The system uses different stereo baseline values. Variable baseline can result in increasing depth resolution...
In this article we propose a new technique to obtain a three-dimensional (3D) reconstruction from stereoscopic images taken by a stereoscopic system in real-time. To parallelize the 3D reconstruction we propose a method that uses a Graphics Processors Unit (GPU) and a disparity map from block matching algorithm (BM). The results obtained permit us to accelerate the images processing time, measured...
It states that three-dimensional content can be generated from two slightly different panoramic view of a scene. The strength of this thought lies in both the intrinsic movement parallax and single effective viewpoint that is associated with the panoramic view of a scene. These factors when effectively put together have the potential to provide pure perspective image. Three-dimensional effect in a...
A multimodal corpus developed for research of speech recognition based on audio-visual data is presented. Besides usual video and sound excerpts, the prepared database contains also thermovision images and depth maps. All streams were recorded simultaneously, therefore the corpus enables to examine the importance of the information provided by different modalities. Based on the recordings, it is also...
In geological area, such as petroleum and mining exploration, virtual reality (VR) immersive systems have been largely used for geological data treatments. Most of such VR systems involve unimanual interaction with data in a stereoscopic visual environment. Many research activities have shown that bimanual interaction tends to provide better performance when compared to unimanual interaction. Thus,...
This paper developed 3D Visual Feedback System for Cybernic Master System. This Cybernic master system is a master-slave system for manipulations and consists of master-slave robot arm and visual feedback system. The Cybernic master arm uses joint torque estimation method, based on Bioelectrical Signal. To reap full advantage of the control method, not only feedback to somatosensory system such as...
An important step in the analysis and interpretation of video scenes for recognizing scenario is the aberration corrections introduced during the image acquisition in order to provide and correct real image data. This paper presents an approach on distortion correction based on stereoscopic self-calibration from images sequences by using a multi-camera system of vision (network cameras). This approach...
Object detecting and camera tracking in a large range of distances is still important problem in the research field of security and more recently also in the research field of assistive technologies too, when it is necessary to monitor intruders in the protected perimeter or elderly and disabled people both in hospital and at home. This paper discusses the design of an automatic stereoscopic video...
As the volume of network data continues to increase and networks become more complex, the ability to accurately manage and analyze data quickly becomes a difficult problem. Many network management tools already use two-dimensional (2D) and three-dimensional (3D) visualization techniques to help support decision-making and reasoning of network anomalies and activity. However, a poor user interface...
We have developed MulDiRoH, a human representation system comprising a multi-view display that uses a QDA screen and multiple cameras. The use of the QDA screen offers the benefit of a large, wide viewing area that enables observers to comfortably watch the display. It also provides convenience in that it is unnecessary to accurately orient the projectors, which facilitates easy system construction.
We have developed a high-frame-rate LED display. Full-color images with high brightness are refreshed at 480 frames per second. In order to transmit such a high framerate signal via conventional 120-Hz DVI, we have introduced a spatiotemporal mapping for its signal input. Four adjacent pixels in each frame in DIV signal are converted into successive four fields. This spatiotemporal mapping improves...
Along with the increasing demand of 3D technology, the visual fatigue issue from stereoscopic video comes to the fore, which has been actively discussed in literature. Nevertheless, it is difficult to find a definite prediction model of visual fatigue in stereoscopic video due to the complexity of the human visual system (HVS). In this paper, we analyze the spatiotemporal characteristics such as depth,...
Compositing is an essential tool in modern film making. Established workflows exist for single-view video compositing, however new problems that demand new solutions arise when considering stereoscopic compositing. We investigate new methods for compositing live action stereo 3D, given two stereo camera systems and a corresponding depth map. We break the process up into three main steps; First, we...
Content production for stereoscopic 3D-TV displays has become mature in the past years. The content is usually shot using two cameras as the glasses-based target devices require two views as input. Beside stereoscopic 3D-TVs, huge progress has also been achieved in the improvement of the image quality of glasses-free auto-stereoscopic displays and light-field displays. Concerning the latter two display...
In this paper we present a system for video based remote collaboration in stereoscopic 3D that supports multi-touch interaction. The presented system seamlessly integrates shared virtual 3D-material into a video conference application. The system utilizes a calibrated stereo camera setup to capture the collaborating users through a semi-transparent holographic screen. The resulting novel form of remote...
In case of undocumented machine failures on-site maintenance personnel can cooperate with a remote expert using telecommunication equipment. We present a new concept for a maintenance system which provides a synchronous shared visual workspace even when only limited bandwidth is available. A mechanic uses an Augmented Reality (AR) system which is connected to the Virtual Reality (VR) system of a remote...
This paper proposes a novel algorithm for optimization of automatic stereoscopic camera parameters based on 3D cinematography principles that control disparity range, as well as the stereo window violation (SWV) and temporal continuity of the disparity (TCD). By following these principles, the user can input the arbitrary range of the disparity and assign the ratios of the disparity adjusting function...
3D displays have various aspect ratios (e.g., 16∶9, 4∶3, and 3∶2). Watching 3D videos with the wrong aspect ratio decreases the quality of the viewing experience. We have developed a smart reframing solution that uses a visual attention model for stereoscopic 3D video to identify the prominent visual regions of every stereoscopic frame. Our method uses several saliency indicators such as depth, edges,...
As a cue to depth perception, motion parallax can improve stereoscopic visualization to a level more like human natural vision. And stereoscopic visualization with motion parallax rendering can lessen the fatigue when people are long-time immersed in virtual scenes. This paper presents a three-stage approach for real-time stereoscopic visualization (SV) with motion parallax rendering (MPR), which...
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