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Lag Camera: A Moving Multi-Camera Array for Scene-Acquisition [article]

Daniel Aliaga, Yi Xu, Voicu Popescu
2006
Moreover, since both the lag camera and occluder are moving, the scene behind the occluder is captured by the lag camera even from viewpoints where the occluder lies in between the lag camera and the hidden  ...  We describe a class of cameras called lag cameras. The main concept is to generalize a camera to take samples over space and time.  ...  A lag camera essentially maps the most difficult case (moving camera and moving scene) to the case of a static camera and a moving scene and enables the use of all algorithms for static cameras.  ... 
doi:10.20385/1860-2037/3.2006.10 fatcat:2qtbsek5unbclg7ysup722235a

LAG CAMERA: A MOVING MULTI-CAMERA ARRAY FOR SCENE ACQUISITION
english

2006 Proceedings of the First International Conference on Computer Graphics Theory and Applications   unpublished
Moreover, since both the lag camera and occluder are moving, the scene behind the occluder is captured by the lag camera even from viewpoints where the occluder lies in between the lag camera and the hidden  ...  We describeF a class of cameras called lag cameras. The main concept is to generalize a camera to take samples over space and time.  ...  A lag camera essentially maps the most difficult case (moving camera and moving scene) to the case of a static camera and a moving scene and enables the use of all algorithms for static cameras.  ... 
doi:10.5220/0001356300980107 fatcat:bwpjivwabjbm5oikcqlnqgilzm

Compact Multi-Spectral Pushframe Camera for Nano-Satellites [article]

Yoann Noblet, Stuart Bennett, Paul F. Griffin, Paul Murray, Stephen Marshall, Wojciech Roga, John Jeffers, Daniel Oi
2020 arXiv   pre-print
In particular, it is well-suited to observing fast moving scenes while retaining high spatial resolution and sensitivity.  ...  In this paper we present an evolution of the single-pixel camera architecture, called 'pushframe', which addresses the limitations of pushbroom cameras in space-based applications.  ...  Acknowledgments The authors thank 'Thorlabs, Inc' for using their 'Face Value Dog Artwork' and 'Studio AKA' for using 'Duggee'. Disclosures The authors declare no conflicts of interest.  ... 
arXiv:2006.01653v1 fatcat:rbonphqetnhbbcwwakparj7w24

Occlusion-Resistant Camera Design for Acquiring Active Environments

Daniel G. Aliaga, Yi Xu, Voicu Popescu
2007 IEEE Computer Graphics and Applications  
We propose a family of Occlusion-Resistant Camera (ORC) designs for acquiring active environments despite the presence of moving interfering occluders.  ...  Our key idea is to capture the scene at least twice from each viewpoint as the camera moves continually to sweep the scene and sample all surfaces.  ...  Several automatic methods for video have also been proposed using static camera arrays or a fixed multi-camera sensor [6] .  ... 
doi:10.1109/mcg.2007.132 pmid:17913026 fatcat:sjenypgif5gvlcbnlvyd223lom

Passive Autofocusing System for a Thermal Camera

Rashid Ali, Peng Yunfeng, Ahmad Ali, Haider Ali, Naeem Akhter, Javed Ahmed, Abdul Jalil
2020 IEEE Access  
[5] developed an array of low cost cameras multi-focus fusion of microscopic imagery. Najibi et. al.  ...  There are four main blocks in the diagram: scene, image acquisition, image processing and lens motion control. These are explained below. A.  ... 
doi:10.1109/access.2020.3006356 fatcat:5uvubgy7uzgahhviwyl5f76ifq

FlatCam: Thin, Bare-Sensor Cameras using Coded Aperture and Computation [article]

M. Salman Asif, Ali Ayremlou, Aswin Sankaranarayanan, Ashok Veeraraghavan, Richard Baraniuk
2016 arXiv   pre-print
FlatCam is a thin form-factor lensless camera that consists of a coded mask placed on top of a bare, conventional sensor array.  ...  Unlike a traditional, lens-based camera where an image of the scene is directly recorded on the sensor pixels, each pixel in FlatCam records a linear combination of light from multiple scene elements.  ...  This results in a time-lag between the sensor acquisition and the image display, a timelag that depends on processing time.  ... 
arXiv:1509.00116v2 fatcat:rnafcdpwqbbdlag2kd6sm67744

Large-Field-of-View Visualization Utilizing Multiple Miniaturized Cameras for Laparoscopic Surgery

Jae-Jun Kim, Alex Watras, Hewei Liu, Zhanpeng Zeng, Jacob Greenberg, Charles Heise, Yu Hu, Hongrui Jiang
2018 Micromachines  
This stitched video is then displayed on an operating monitor with a much larger FoV than that of a single camera.  ...  Here we report a trocar-camera assembly (TCA) that promises a large FoV, and improved efficiency and range of operations.  ...  These artifacts will become more noticeable as the distance between the cameras increases, the scene becomes less planar, or the cameras move closer to the scene.  ... 
doi:10.3390/mi9090431 pmid:30424364 pmcid:PMC6187494 fatcat:2632avvwqvcplghz6faqvesgte

FlatCam: Thin, Lensless Cameras Using Coded Aperture and Computation

M. Salman Asif, Ali Ayremlou, Aswin Sankaranarayanan, Ashok Veeraraghavan, Richard G. Baraniuk
2017 IEEE Transactions on Computational Imaging  
FlatCam is a thin form-factor lensless camera that consists of a coded mask placed on top of a bare, conventional sensor array.  ...  Unlike a traditional, lens-based camera, where an image of the scene is directly recorded on the sensor pixels, each pixel in FlatCam records a linear combination of light from multiple scene elements.  ...  The bio portraits of SA, AA and AS were simulated with FlatCam, while those for AV and RB were taken with FlatCam prototype.  ... 
doi:10.1109/tci.2016.2593662 fatcat:speggfd6s5fznni3ckxtofpmoe

Efficient Smart CMOS Camera Based on FPGAs Oriented to Embedded Image Processing

Ignacio Bravo, Javier Baliñas, Alfredo Gardel, José L. Lázaro, Felipe Espinosa, Jorge García
2011 Sensors  
and a Field Programmable Gate Array (FPGA).  ...  This article describes an image processing system based on an intelligent ad-hoc camera, whose two principle elements are a high speed 1.2 megapixel Complementary Metal Oxide Semiconductor (CMOS) sensor  ...  In the study cited, detection of moving objects in a scene using Principal Component Analysis (PCA) techniques was entirely implemented on an FPGA.  ... 
doi:10.3390/s110302282 pmid:22163739 pmcid:PMC3231626 fatcat:7vcjqozu4netxgtsacbmh7aijy

IMU and Multiple RGB-D Camera Fusion for Assisting Indoor Stop-and-Go 3D Terrestrial Laser Scanning

Jacky Chow, Derek Lichti, Jeroen Hol, Giovanni Bellusci, Henk Luinge
2014 Robotics  
The Kinects' depth maps were processed using a new point-to-plane ICP that minimizes the reprojection error of the infrared camera and projector pair in an implicit iterative extended Kalman filter (IEKF  ...  The Scannect can map and navigate in areas with textureless walls and provides an effective means for mapping large areas with lots of occlusions.  ...  Hol, Giovanni Bellusci, Henk Luinge assisted in the IMU processing, had valuable insights for the project, and contributed to the writing of this manuscript.  ... 
doi:10.3390/robotics3030247 fatcat:3uqczkikubb2ff664ry65ms2jq

Impact of New Camera Technologies on Discoveries in Cell Biology

Nico Stuurman, Ronald D. Vale
2016 The Biological Bulletin  
In this article, we focus on developments in camera technologies and associated image processing that have been a major driver of technical innovations in light microscopy.  ...  metal-oxidesemiconductor cameras, which, together, have had major impacts in light microscopy.  ...  Related work in our laboratory on software integration of cameras with microscopes was supported by NIH grant no. R01EB007187.  ... 
doi:10.1086/689587 pmid:27638691 pmcid:PMC5100698 fatcat:w5szudfdzbhn5etl2yivkb5bqm

Indoor localisation through object detection within multiple environments utilising a single wearable camera

Colin Shewell, Chris Nugent, Mark Donnelly, Haiying Wang, Macarena Espinilla
2016 Health and Technology  
Acknowledgments The authors would like to thank the University of Jaèn for the use of their smart lab facilities.  ...  creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a  ...  The array of sensor technology includes PIR sensors, contact sensors, static cameras, and a smart floor.  ... 
doi:10.1007/s12553-016-0159-x pmid:28344913 pmcid:PMC5346438 fatcat:gydnakj3pbhsfixj6oajamfsuy

High-Quality Real Time Facial Capture Based on Single Camera [article]

Hongwei Xu and Leijia Dai and Jianxing Fu and Xiangyuan Wang and Quanwei Wang
2021 arXiv   pre-print
We propose a real time deep learning framework for video-based facial expression capture. Our process uses a high-end facial capture pipeline based on FACEGOOD to capture facial expression.  ...  We train a convolutional neural network to produce high-quality continuous blendshape weight output from video training.  ...  ) Training Data Acquisition In order to avoid the influence of light on the image, the FACEGOOD P1 equipment(Fig. 2 ) is used for image acquisition.  ... 
arXiv:2111.07556v1 fatcat:ufzdomftdbarxn4fhulhclrptu

Sensor fusion in smart camera networks for Ambient Intelligence

Tommi Määttä
2013 Journal of Ambient Intelligence and Smart Environments  
Acknowledgments It is time for the best part, a chance to thank all the people that I have had the pleasure of meeting and working with during my PhD years.  ...  The system proposed by Gatica-Perez captured the scene by a microphone array and a set of uncalibrated cameras, whereas Talantzis had the cameras calibrated.  ...  The process of capturing an image on a light-sensitive sensor is called image acquisition, which is the first requirement for making observations of a scene.  ... 
doi:10.3233/ais-130214 fatcat:axt23ap7wvb4roqozgbu257kaq

High-frame-rate intensified fast optically shuttered TV cameras with selected imaging applications

George J. Yates, Nicholas S. P. King, George A. Kyrala, Donald R. Snyder
1994 Ultrahigh- and High-Speed Photography, Videography, and Photonics '94  
A summaryof the Group'scurrentand developmental camera designs and R&D initiatives are included.  ...  The Group's test and evaluation capabilities for characterization of imaging type electro-opticsensors and sensor components including Focal Plane Arrays, gated Image Intensifiers, microchannel plates,  ...  ', required to move an image thru the array. l Quad head camera (a) for various Figure 30 . 30 I. ............. : _-:_-.  ... 
doi:10.1117/12.189020 fatcat:uoyorxkhtzhwfblndyddmvwhbu
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