The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, the problem of multi-sensor data fusion for 3D dimensional reconstruction/assessment of manufactured parts is investigated. For this, a method relying on cooperation of two acquisition/processing techniques (stereoscopic and structured light sensors) is presented. The stereoscopic system reconstructs the outline of the object, whereas the structured light system represents the workpiece...
In this paper, a stereoscopic video description method is proposed that indirectly incorporates scene geometry information derived from stereo disparity, through the manipulation of video interest points. This approach is flexible and able to cooperate with any monocular low-level feature descriptor. The method is evaluated on the problem of recognizing complex human actions in natural settings, using...
The pre-production stage in a film workflow is important to save time during production. To be useful in stereoscopic 3-D movie-making, storyboards and previz tools need to be adapted in at least two ways. First, it should be possible to specify the desired depth values with suitable and intuitive user interfaces. Second, it should be possible to preview the stereoscopic movie with a suitable screen...
This paper presents an interaction system with a floating display screen. Aerial imaging by retro-reflection (AIRR) forms an aerial LED screen that is floating over tabletop and is visible well over 120 degrees. In order to reduce latency, our system employs a high-frame-rate LED display and high-speed stereoscopic cameras. Developed system enables users to interact with aerially displayed information...
This paper presents an efficient approach to measure sharpness mismatches between stereoscopic views. Sharpness mismatch can occur through focus mismatches between stereoscopic cameras, errors in post-processing or even for low-bandwidth transmission, where one view is subsampled or transmitted at a much lower rate. This artifact can lead to a degraded 3D experience for observers. In this paper, the...
Nowadays mobile teleoperated robots are deployed in many branches of human activities e.g. sea submarine robots, military UGVs, rescue missions. Interpretation of visual information to the human operator is still an issue eventhough the technologies of 3D vision are known. The paper presents results of practical experiments with teleoperated robotic arm where the 3D and 2D vision subsystems were used...
The Amnesia Atlas constitutes a pilot study for a photographic media interface as memory prosthesis. It utilises the wearable life-logging camera SenseCam to shed light on the importance of photographic imagery and place for memory retrieval. It investigates the relationships of spatiotemporal context on memory encoding and retrieval, utilising immersive 3D visualisation.
While the 3D graphics technique has found its place for the scientific visualization, especially for medical and biological applications, it has long been speculated that the 3D may not be so much effective as far as the conventional information visualization is concerned. We agree upon this view that the naive extension of the 2D visual forms to 3D is not a way to go. Instead, the computergenerated...
This work is part of developing a new type of radars which is based on stereoscopic effect obtained by using two cameras. The main work is to develop an algorithm for speed estimation. We begin by detecting motions and tracking vehicles in order to identify the vehicle in the next frame. Stereoscopic pictures allow us to calculate the distance from the cameras to the chosen object within the picture...
This paper presents the implementation for 3D space sensing and transmission technique. And also introduces tangible telepresence service through applying the technique. Because 3D space sensing and transmission technique is for performing augmented reality, we expect that it may be used in number of various applications to use augmented reality technology.
In this work we present a novel framework for the real-time interaction with 3D models in augmented virtual reality. Our framework incorporates view-dependent stereoscopic rendering of the reconstructed environment together with user's hands and a virtual object, and high-precision gesture recognition to manipulate it. Proposed setup consists of a Creative RGB-D camera, Oculus Rift VR head mounted...
The video captured from forward moving camera has been used for environment surveillance, endoscopy, pipeline inspection and mobile navigation, from which 3D information acquisition will further facilitate the applications. In this paper, we proposed a new method named bi-slit projections to achieve the stereo imaging from forward motion video captured by only single camera. The method only requires...
This paper proposes a method for high-quality omnidirectional 3D reconstruction of augmented Manhattan worlds from catadioptric stereo video sequences. In contrast to existing works we do not rely on constructing virtual perspective views, but instead propose to optimize depth jointly in a unified omnidirectional space. Furthermore, we show that plane-based prior models can be applied even though...
This work presents an omnidirectional stereo system with a direct application to autonomous logistics. The omnidirectional system uses fisheye lenses to inspect the surroundings of the automated forklift. The lenses are mounted on the top of the vehicle to allow a 360° scene reconstruction with a single stereo pair. The system provides the list of obstacles detected around the vehicle. The reconstruction...
The paper presents a method for automatically detecting pallets and estimating their position and orientation. For detection we use a sliding window approach with efficient candidate generation, fast integral features and a boosted classifier. Specific information regarding the detection task such as region of interest, pallet dimensions and pallet structure can be used to speed up and validate the...
The dynamic disparity influence on visual comfort is studied through the subject evaluation designed with the stereoscopic videos captured in studio and natural environments. The technique of zoom was used with three variables to obtain the video sequences. Experiment results showed that dynamic disparity would bring some discomfort to observers, but it was tolerable. Among the three variables, the...
Despite efforts of the scientific community in recent years, little is known about the mechanisms of the human visual system that control visual attention when watching 3D content. To help understanding these mechanisms and develop more accurate visual attention models, we created a public 3D video eye tracking dataset. The dataset provides the eye tracking information corresponding to eight stereoscopic...
A robust computer vision system for an unmanned surface vehicle (USV) is being developed, in support of tracking a moving marine vehicle from the USV. A methodology to minimize the tracking errors regarding the raw 2-D measurements of the position of a target boat using a commercial stereo camera will be presented. This errors are mainly due to image quantization limitations and pixel miscorrespondences...
In this paper, a novel method for people detection and tracking is proposed, based on stereo vision. Each person is represented by a group of the feature points. In this method feature point extraction and 2D space construction of projected points on the ground plane is performed in order to provide top view. Occlusion, as a main challenge in tracking systems, can be addressed by top view scene. A...
This paper addresses the development of an underwater visual navigation system for a Remotely Operated Vehicle (ROV) based on Real-Time Simultaneous Localization and Mapping method using natural landmarks. Our proposed approach was tested in an indoor tank, where field experiments were performed to obtain 3D vehicle (VIDEORAY Pro3 ROV) trajectory, and results validated using an external stereo vision...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.