Filters








104,300 Hits in 5.7 sec

Precise Visibility Determination of Displays in Camera Images

E. Horster, R. Lienhart, W. Kellermann, J.-Y. Bouguet
2005 IEEE International Conference on Multimedia and Expo  
Under these conditions the algorithm determines precisely where which parts of a display are imaged by a camera.  ...  Often only parts of a display are visible from a camera. Therefore, a novel algorithm for precise visibility determination is presented.  ...  SUMMARY AND CONCLUSIONS In this paper we describe the problem of precisely determining the visibility of displays from uncalibrated cameras.  ... 
doi:10.1109/icme.2005.1521552 dblp:conf/icmcs/HorsterLKB05 fatcat:5o5zzs4g5vbr5jehakwl4ehwvi

3D Modeling and Displaying System for Volume Communication

Naohisa SAKAMOTO, Nobuyuki KUKIMOTO, Yukio YASUHARA, Yasuo EBARA, Koji KOYAMADA
2005 JSME international journal. Series B, Fluids and thermal engineering  
We developed a 3D modeling and displaying system for volume communication, which consists of a set of cameras and a PC cluster, and evaluated on both LCD and omni-directional displays.  ...  By using a system consisting of five cameras and a six-node PC cluster, it was possible to model and display a real-world object at interactive frame rate.  ...  Acknowledgements This work has been partly supported by the Japan Ministry of Education, Science, Sports and Culture's Grant-in-Aid for IT Program, 2004.  ... 
doi:10.1299/jsmeb.48.247 fatcat:ozgh4aagrjgebjsnpdis3b6c2q

Perspectives of RealSense and ZED Depth Sensors for Robotic Vision Applications

Vladimir Tadic, Attila Toth, Zoltan Vizvari, Mihaly Klincsik, Zoltan Sari, Peter Sarcevic, Jozsef Sarosi, Istvan Biro
2022 Machines  
This review paper presents an overview of depth cameras.  ...  Our goal is to describe the features and capabilities of the introduced depth sensors in order to determine their possibilities in robotic applications, focusing on objects that might appear in applications  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/machines10030183 fatcat:lgaqsbqhqzazpfnxbcgkhjkwca

Person Re-Identification between Visible and Thermal Camera Images Based on Deep Residual CNN Using Single Input

Jin Kyu Kang, Toan Minh Hoang, Kang Ryoung Park
2019 IEEE Access  
A majority of the studies have been performed for visible-light camera-based person ReID, which can be used only in a limited environment owing to the characteristics of a visible-light camera that are  ...  This method overcomes the limitation of visible-light camera-based person ReID using both a visible-light and thermal camera.  ...  In (a) and (b), left image is a visible-light camera image and right image is a thermal camera image.  ... 
doi:10.1109/access.2019.2914670 fatcat:qyzwdshlrfd7ljspsqs3jr4z7i

Measuring and modeling per-element angular visibility in multi-view displays

Atanas Boev, Robert Bregovic, Atanas Gotchev
2010 Journal of the Society for Information Display  
The identified parameters are interleaving pattern, angular visibility and frequency throughput of the display.  ...  We model the layer as image processing channel and identify display parameters related with the model, which are important for design of image processing algorithms for artifact mitigation.  ...  In this approach, the visibility of multiple sub-pixels as seen in one camera position is related to the visibility of one sub-pixel as seen from multiple camera positions.  ... 
doi:10.1889/jsid18.9.686 fatcat:bepfg37trjcw5bx2b6cct6iy2i

PolarTrack

Roman Rädle, Hans-Christian Jetter, Jonathan Fischer, Inti Gabriel, Clemens N. Klokmose, Harald Reiterer, Christian Holz
2018 Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems - CHI '18  
In Po-larTrack, a polarization filter continuously rotates in front of an off-the-shelf color camera, which causes the displays of observed devices to periodically blink in the camera feed.  ...  PolarTrack exploits the use of polarized light in current displays to segment device screens in the camera feed from the background by detecting periodical changes of display brightness while the linear  ...  of what they display or ambient visible light.  ... 
doi:10.1145/3173574.3174071 dblp:conf/chi/RadleJFGKRH18 fatcat:46wsiwpqfjbmxoifqxlz5p7upu

Measurement of High‐Precision Components

Jonas Bartsch
2021 PhotonicsViews  
As shown in Fig. 1 , the surface under test is placed in the field of view of the camera, enabling it to capture images of sinusoidal fringe patterns displayed on the monitor in reflection.  ...  Continuous, full field spatial coding of the display surface by Phase Shifting Technique enables determination of independent vision rays for each camera pixel.  ... 
doi:10.1002/phvs.202100016 fatcat:47ercuptwvcfbdjiqlr7ka7xae

Holographic Micromirror Array with Diffuse Areas for Accurate Calibration of 3D Light-Field Display

Lode Jorissen, Ryutaro Oi, Koki Wakunami, Yasuyuki Ichihashi, Gauthier Lafruit, Kenji Yamamoto, Philippe Bekaert, Boaz Jessie Jackin
2020 Applied Sciences  
The calibration algorithm uses these diffusing areas as markers to determine the relation between the pixels of display source and the mirrors in the micromirror-array screen.  ...  This method also eliminates the position dependency of display source, calibration-camera, and mirror-array screen during calibration, which enables easy setup of the display system.  ...  The method worked well without any visible distortions but demands precise positioning of camera, display, and DDHOE screen due to the assumptions used in the calibration procedure.  ... 
doi:10.3390/app10207188 fatcat:qpidiseb4zhuxkzjbtslgzny7a

Calibration of visual sensors and actuators in distributed computing platforms

E. Hörster, R. Lienhart, W. Kellermann, J.-Y. Bouguet
2005 Proceedings of the third ACM international workshop on Video surveillance & sensor networks - VSSN '05  
We present in this paper a novel approach for position calibration of visual sensors and actuators, i.e. cameras and displays, in a distributed network of general purpose computing devices.  ...  on the positioning of the cameras and displays, and (d) no upper limit on the number of cameras and displays to calibrated is imposed.  ...  visible image of the model plane.  ... 
doi:10.1145/1099396.1099401 fatcat:7lbe7oarjrhmpcme43m7g7coaq

High-voltage electrical survey advances using UV/IR

Daniel A. Ninedorf, Roel Stolper, Jaco Hart, Vladimir P. Vavilov, Douglas D. Burleigh
2008 Thermosense XXX  
A solarblind ultraviolet image overlaid onto infrared, combined with a solar -blind ultravi olet image and then overlaid onto color visible in the same camera with a weight of 6 pounds provides the comparison  ...  This presentation will provide exampl es of different images and analysis, with operating time from hand -held, laboratory, vehicle and aerial camera mounts.  ...  of the display and camera.  ... 
doi:10.1117/12.784506 fatcat:5gei322y35edjgrisfic5jbzbu

Seamless multi-projector display on curved screens

Jeroen van Baar, Thomas Willwacher, Srinivas Rao, Ramesh Raskar
2003 Proceedings of the workshop on Virtual environments 2003 - EGVE '03  
We describe a new technique to display seamless images using overlapping projectors on curved surfaces.  ...  Previous techniques for automatically registered seamless displays have focused mainly on planar displays.  ...  All cameras record image of current projection. 3. Determine 3D reconstructed points of display surface for all cameras, which correspond with the structured light features. 4.  ... 
doi:10.1145/769953.769986 fatcat:mckfcod77zbj7nd2m72fzmioc4

Real-Time Radiometric Compensation for Optical See-Through Head-Mounted Displays

Tobias Langlotz, Matthew Cook, Holger Regenbrecht
2016 IEEE Transactions on Visualization and Computer Graphics  
(Left) Head-mounted display prototype utilizing a beam-splitter to capture the image as seen by the user allowing for the computation of a pixel-precise compensation image.  ...  In this paper we present an initial approach for mitigating the effect of color-blending in optical see-through head-mounted displays by introducing a real-time radiometric compensation.  ...  Once calibrated, we compute a pixel-precise lookup-table mapping pixels in the display to corresponding pixels in camera C2.  ... 
doi:10.1109/tvcg.2016.2593781 pmid:27479973 fatcat:dmgshy5e3fazves3t5qyjnqiru

BlueTable

Andrew D. Wilson, Raman Sarin
2007 Graphics Interface  
Furthermore, the vision-based handshaking procedure determines the precise position of the device on the interactive surface, thus permitting a variety of interactive scenarios which rely on the presentation  ...  of graphics co-located with the device.  ...  Because the camera senses only near-infrared light (approximately 900nm, just beyond visible, and not impacted by heat sources), the sensed image does not include the projected image composed of only visible  ... 
doi:10.1145/1268517.1268539 dblp:conf/graphicsinterface/WilsonS07 fatcat:7gabkjn5ijezjgns4y7clkdvva

Overview of a hybrid underwater camera system

Philip Church, Weilin Hou, Georges Fournier, Fraser Dalgleish, Derek Butler, Sergio Pari, Michael Jamieson, David Pike, Weilin W. Hou, Robert A. Arnone
2014 Ocean Sensing and Monitoring VI  
Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently  ...  Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to the Department of Defense, Executive Services and Communications  ...  In previous trials, LUCIE has demonstrated imaging capabilities in excess of 3 times the range of visible camera with lights.  ... 
doi:10.1117/12.2053365 fatcat:xgoy2ysrxbgttd2zqzofscnjra

Active gaze control for attentional visual SLAM

Simone Frintrop, Patric Jensfelt
2008 2008 IEEE International Conference on Robotics and Automation  
In this paper, we introduce an approach to active camera control for visual SLAM.  ...  Features, detected by a biologically motivated attention system, are tracked over several frames to determine stable landmarks. Matching of features to database entries enables global loop closing.  ...  It is possible to use position prediction of landmarks to determine which landmarks could be visible and thus prune the search space, but since this prediction is usually not precise when uncertainty grows  ... 
doi:10.1109/robot.2008.4543777 dblp:conf/icra/FrintropJ08 fatcat:3krjcorse5do3ckgsq7klrgxfu
« Previous Showing results 1 — 15 out of 104,300 results