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A light transport model for mitigating multipath interference in Time-of-flight sensors

Nikhil Naik, Achuta Kadambi, Christoph Rhemann, Shahram Izadi, Ramesh Raskar, Sing Bing Kang
2015 2015 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)  
Continuous-wave Time-of-flight (TOF) range imaging has become a commercially viable technology with many applications in computer vision and graphics.  ...  In this paper, we correct MPI by combining the standard measurements from a TOF camera with information from direct and global light transport.  ...  We also acknowledge the help of all the members of the Interactive Visual Media group at Microsoft Research.  ... 
doi:10.1109/cvpr.2015.7298602 dblp:conf/cvpr/NaikKRIRK15 fatcat:jw2enwdf7zcena4o5vildgzee4

A Light Transport Model for Mitigating Multipath Interference in TOF Sensors [article]

Nikhil Naik, Achuta Kadambi, Christoph Rhemann, Shahram Izadi, Ramesh Raskar, Sing Bing Kang
2015 arXiv   pre-print
Continuous-wave Time-of-flight (TOF) range imaging has become a commercially viable technology with many applications in computer vision and graphics.  ...  In this paper, we correct MPI by combining the standard measurements from a TOF camera with information from direct and global light transport.  ...  Figure 1 . 1 Multipath interference in time of flight cameras. In (a) the typical operation of TOF cameras is shown. A single optical path returns to the image sensor.  ... 
arXiv:1501.04878v2 fatcat:qt4bjytwubfmhjli32u6mgpxfa

Multipath Interference Compensation in Time-of-Flight Camera Images

Stefan Fuchs
2010 2010 20th International Conference on Pattern Recognition  
Multipath interference is inherent to the working principle of a Time-of-flight camera and can influence the measurements by several centimeters.  ...  In this paper we formulate a multipath model in order to estimate the interference and correct the measurements. The proposed approach comprises the measured scene structure.  ...  INTRODUCTION A Time-Of-flight (ToF) camera is an active sensor, which basically operates like common CCD or CMOS cameras. The ToF camera emits sinusoidal modulated Near-InfraRed (NIR) light.  ... 
doi:10.1109/icpr.2010.874 dblp:conf/icpr/Fuchs10 fatcat:s6st3tipjzc2bgpli4bj7r2tqu

Recent Advances in Transient Imaging: A Computer Graphics and Vision Perspective [article]

Adrian Jarabo, Belen Masia, Julio Marco, Diego Gutierrez
2016 arXiv   pre-print
By capturing, reconstructing, or simulating light transport at extreme temporal resolutions, researchers have proposed novel techniques to show movies of light in motion, see around corners, detect objects  ...  The key idea is to leverage the wealth of information in the temporal domain at the pico or nanosecond resolution, information usually lost during the capture-time temporal integration.  ...  Acknowledgments We would like to thank Matthias Hullin for discussions and comments on early versions of the work.  ... 
arXiv:1611.00939v1 fatcat:mxlxjhyqvjemzon3d7jvileqpm

Coded time of flight cameras

Achuta Kadambi, Refael Whyte, Ayush Bhandari, Lee Streeter, Christopher Barsi, Adrian Dorrington, Ramesh Raskar
2013 ACM Transactions on Graphics  
The time slots correspond to the true geometry of the scene (light travels 1 foot in a nanosecond, times are for round-trip).  ...  However, they are geared to measure range (or phase) for a single reflected bounce of light and suffer from systematic errors due to multipath interference.  ...  We thank the Camera Culture group at MIT for their support. Ramesh Raskar was supported by an Alfred P. Sloan Research Fellowship and a DARPA Young Faculty Award.  ... 
doi:10.1145/2508363.2508428 fatcat:jp2cjmhjzze5rkepbvvsxtn5gm

Recent advances in transient imaging: A computer graphics and vision perspective

Adrian Jarabo, Belen Masia, Julio Marco, Diego Gutierrez
2017 Visual Informatics  
By capturing, reconstructing, or simulating light transport at extreme temporal resolutions, researchers have proposed novel techniques to show movies of light in motion, see around corners, detect objects  ...  The key idea is to leverage the wealth of information in the temporal domain at the pico or nanosecond resolution, information usually lost during the capture-time temporal integration.  ...  Acknowledgments We would like to thank Matthias Hullin for discussions and comments on early versions of the work.  ... 
doi:10.1016/j.visinf.2017.01.008 fatcat:q76wlvwkxfg2lbqflfsdrli464

Macroscopic Interferometry: Rethinking Depth Estimation with Frequency-Domain Time-of-Flight

Achuta Kadambi, Jamie Schiel, Ramesh Raskar
2016 2016 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)  
Acknowledgments: The authors thank Vage Taamazyan, Suren Jayasuriya and the anonymous reviewers for valuable feedback.  ...  The list of references in mitigating multipath interference for ToF cameras is vast.  ...  As shown in Figure 2 , a Fourier transform allows resolution of multipath interference.  ... 
doi:10.1109/cvpr.2016.103 dblp:conf/cvpr/KadambiSR16 fatcat:f6qphd2b7bgufen4peq3ak7aae

DeepToF

Julio Marco, Quercus Hernandez, Adolfo Muñoz, Yue Dong, Adrian Jarabo, Min H. Kim, Xin Tong, Diego Gutierrez
2017 ACM Transactions on Graphics  
Time-of-flight (ToF) imaging has become a widespread technique for depth estimation, allowing affordable off-the-shelf cameras to provide depth maps in real time.  ...  However, multipath interference (MPI) resulting from indirect illumination significantly degrades the captured depth.  ...  Kim acknowledges Korea NRF grants (2016R1A2B2013031, 2013M3A6A6073718), Giga KOREA Project (GK17P0200) and KOCCA in MCST of Korea.  ... 
doi:10.1145/3130800.3130884 fatcat:ihavxbwp3ngfrg4wsmmbsvq5ge

Depth recovery in time of flight range sensors via compressed sensing algorithm

Swati S. Patil, Pratik M. Bhade, V. S. Inamdar
2020 International Journal of Intelligent Robotics and Applications  
Stereo vision, structured light, and time of flight (ToF) are different range imaging techniques that acquire a scene and provide different features such as a depth map and an amplitude image.  ...  However, it faces multipath interference (MPI) problems that give rise to an error in radiance information.  ...  Babasaheb Ambedkar Research and Training Institute (BARTI) for funding the project. We also thank IFM Electronic India Private Limited for providing a visual sensor simulator for our research work.  ... 
doi:10.1007/s41315-020-00130-7 fatcat:cpwdrk2nqzb2pd4vwsk27i7axu

Airport Risk Assessment: Examples, Models and Mitigations [chapter]

John Spriggs
2002 Components of System Safety  
This paper looks, as an example, at an extremely small part of that network, picks out a few hazards, introduces novel modelling tools that have been used in their analysis, and discusses some mitigating  ...  It describes an approach to risk assessment in this context; some of the tools that may be applied; and some mitigations, both established and innovative.  ...  Acknowledgments The debris detection work presented in this paper comprises aspects of a study carried out for EUROCONTROL, the European Organisation for the Safety of Air Navigation, under contract C/  ... 
doi:10.1007/978-1-4471-0173-4_11 dblp:conf/scss/Spriggs02 fatcat:3katlvspmfefxkzdgyeleoxoae

Signal Processing Opens New Views on Imaging [Special Reports]

John Edwards
2015 IEEE Signal Processing Magazine  
The "time-of-flight" camera resolves distance based on the known speed of light, measuring the time-of-flight of a light signal between the camera's sensor and the subject for each point of the image.  ...  The system takes advantage of multipath scattering interference.  ... 
doi:10.1109/msp.2015.2437291 fatcat:tlffmjywszdolpdg6dym6doi74

A REVIEW ON INDOOR LOCALIZATION WITH INTERNET OF THINGS

C. Basri, A. Elkhadimi
2020 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
The emergence of IoT in multiple sectors has enabled the requirement for an accurate real time location information.  ...  The advancement of Internet of things (IoT) has revolutionized the field of telecommunication opening the door for interesting applications such as smart cities, resources management, logistics and transportation  ...  Time Domain Time measurements exploit the time propagation of the signal, also named ToF (Time of Flight), to estimate the distance between two different nodes A and B.  ... 
doi:10.5194/isprs-archives-xliv-4-w3-2020-121-2020 fatcat:2f5qi5ds6ffkvo6v6mfujestsu

Aeronautical Mobile Airport Communications System (AeroMACS) [chapter]

James M., Edward Hall
2011 Future Aeronautical Communications  
A port on the managed switch is the interface for IP-based sensors such as the Sensis MLAT sensors.  ...  In specific, the potential for co-channel interference from AeroMACS into the Globalstar MSS feeder link receivers must be mitigated through practical limits, international standards, and compliant implementations  ...  Aeronautical communications is seen as a major bottleneck stressing capacity limits in air transportation.  ... 
doi:10.5772/30292 fatcat:kwjwifcnsjfmvla3o2pfsbrcpi

Precision Positioning for Smart Logistics Using Ultra-Wideband Technology-Based Indoor Navigation: A Review

Mahmoud Elsanhoury, Petteri Makela, Janne Koljonen, Petri Valisuo, Ahm Shamsuzzoha, Timo Mantere, Mohammed Elmusrati, Heidi Kuusniemi
2022 IEEE Access  
signal interference in dense environments, and when required to operate in extreme conditions.  ...  Furthermore, it demonstrates the benefits of UWB technology for accurate positioning and tracking of both stationary and moving items, and machinery in an indoor logistics environment.  ...  When using multilateration, the ranges between the anchors and tags are obtained by measuring the time of flight (TOF) and multiplying it by the speed of light or by applying a channel attenuation model  ... 
doi:10.1109/access.2022.3169267 fatcat:7a2pf56bdvg2th3veljcoruuxu

Recent Advancement on the Use of Global Navigation Satellite System-Based Positioning for Intelligent Transport Systems [Guest Editorial]

Fabio Dovis, Laura Ruotsalainen, Rafael Toledo-Moreo, Zaher Zak M. Kassas, Vassilis Gikas
2020 IEEE Intelligent Transportation Systems Magazine  
His research addresses the design of GPS and Galileo receivers, advanced signal processing for mitigation of multipath, countermeasures to interference and spoofing, as well as ionospheric monitoring.  ...  In "Analysis of High-Accuracy Satellite Messages for Road Applications" the authors address the problem with road applications getting high accuracy in a short time by means of a GNSS high-accuracy service  ... 
doi:10.1109/mits.2020.2994923 fatcat:dap6r7fx5bbpphu35snicbtkja
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