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Multidepth, multiparticle tracking for active microrheology using a smart camera

Scott A. Silburn, Christopher D. Saunter, John M. Girkin, Gordon D. Love
2011 Review of Scientific Instruments  
The quantitative measurement of particle motion in optical tweezers is an important tool in the study of microrheology and can be used in a variety of scientific and industrial applications.  ...  motion and the trapped probe particle response using a single instrument.  ...  Red areas are excluded from the centroid calculation, inner unshaded areas contribute to the calculation. White scale bars in all images are 5 μm. . The trapping FIG. 4.  ... 
doi:10.1063/1.3567801 pmid:21456756 fatcat:ndvzeznt3jgvdf4j7wnip3vkkm

Limitations of recreational camera traps for wildlife management and conservation research: A practitioner's perspective

Scott Newey, Paul Davidson, Sajid Nazir, Gorry Fairhurst, Fabio Verdicchio, R. Justin Irvine, René van der Wal
2015 Ambio  
While the merits of different camera traps will be study specific, the performance of more expensive 'professional' models may prove more cost-effective in the long-term when using camera traps for research  ...  We present our perspective of using two popular models of 'recreational' camera trap for ecological fieldbased studies.  ...  We are grateful for access to private land where much of the field work took place.  ... 
doi:10.1007/s13280-015-0713-1 pmid:26508349 pmcid:PMC4623860 fatcat:w6n3glitwbbh7h34r3smziagme

Large-Scale Ecological Analyses of Animals in the Wild Using Computer Vision

Mikayla Timm, Subhransu Maji, Todd Fuller
2018 2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)  
Camera traps are increasingly being deployed by ecologists and citizen-scientists as a cost-effective way of obtaining large amounts of animal images in the wild.  ...  In this paper, we explore computer vision approaches for species identification in camera trap images and for individual jaguar identification, both of which show promising results.  ...  The full camera trap dataset contains 300,000 images of wildlife taken from motion-activated camera traps in the wild.  ... 
doi:10.1109/cvprw.2018.00252 dblp:conf/cvpr/TimmMF18 fatcat:fm42kcveifayvgznmumqfn2ooq

Imaging based feedback cooling of a levitated nanoparticle [article]

Yosuke Minowa, Keisuke Kato, Shoki Ueno, Thomas W. Penny, Antonio Pontin, Masaaki Ashida, Peter F. Barker
2022 arXiv   pre-print
Here, we show the camera-based feedback cooling of a charged nanoparticle levitated in a linear Paul trap. A charged nanoparticle levitated in a vacuum was observed by CMOS camera systems.  ...  Imaging-based detection of the motion of the levitated nanoparticles complements a widely-used interferometric detection method, providing a precise and robust way to estimate the position of the particle  ...  This allowed the implementation of different methods for digital signal processing of sequential images which may find application in other mechanical oscillator systems.  ... 
arXiv:2204.05506v1 fatcat:jcsy2u33zvfp3i4yhs75r54f3u

Super-resolution imaging of a low frequency levitated oscillator [article]

N.P. Bullier, A. Pontin, P.F. Barker
2019 arXiv   pre-print
We describe the measurement of the secular motion of a levitated nanoparticle in a Paul trap with a CMOS camera.  ...  We show that by using the improvement given by super-resolution imaging, a significant reduction in the noise floor can be attained, with an increase in the bandwidth of the force sensitivity.  ...  The motion of the nanoparticle in the trap can be de-composed in two different motions.  ... 
arXiv:1905.00884v1 fatcat:yv2bw3z3krddrpg5d2e6mgf34u

A picture is worth a thousand data points: an imagery dataset of paired shrub-open microsites within the Carrizo Plain National Monument

Taylor J. Noble, Christopher J. Lortie, Michael Westphal, H. Scott Butterfield
2016 GigaScience  
Conclusions: Camera traps are an effective, less invasive survey method for collecting data on the presence or absence of desert animals in shrub and open microhabitats.  ...  Findings: Twenty cameras were deployed from April 1st, 2015 to July 5th, 2015 at paired shrub-open microsites at three locations.  ...  Acknowledgements We would like to express our thanks to the Bureau of Land Management, Bakersfield and Central Coast Field Offices for logistical support.  ... 
doi:10.1186/s13742-016-0145-2 pmid:27687002 pmcid:PMC5041587 fatcat:7bxfkwmiufa55eouko3c44ycjm

Human Detection Robot in Flood

Amrutha M S et al., Amrutha M S et al.,, TJPRC
2020 International Journal of Mechanical and Production Engineering Research and Development  
The unexpected flood leads to missing of people. Finding out people who are trapped in under water is difficult and risky job for human.  ...  Flood is the very common disaster that is being facing in these days. Heavy rainfall with rise of water level in dams, rivers and other water resources have lead to flood in all parts of India.  ...  A camera is fixed for capturing the images. when a human is detected a message containing the location of people where they are trapped will be send to rescue team it automatically move by help of sensor  ... 
doi:10.24247/ijmperdjun2020879 fatcat:skysxlmjuje4bfksvqssejr6xa

Efficient Pipeline for Camera Trap Image Review [article]

Sara Beery, Dan Morris, Siyu Yang
2019 arXiv   pre-print
The computer vision community has been making strides towards automating the species classification challenge in camera traps, but it has proven difficult to to apply models trained in one region to images  ...  collected in different geographic areas.  ...  INTRODUCTION Camera traps are heat-or motion-activated cameras placed in the wild to monitor and investigate animal populations and behavior.  ... 
arXiv:1907.06772v1 fatcat:ssoigxakazgt7hkqiahjpobjbe

Exploiting Depth Information for Wildlife Monitoring [article]

Timm Haucke, Volker Steinhage
2021 arXiv   pre-print
This novel approach was also evaluated in terms of a proof-of-concept in a zoo scenario using an RGB-D camera trap.  ...  Camera traps are a proven tool in biology and specifically biodiversity research.  ...  We thank Alejandro Berni Garcia for his help with the construction of the wooden camera trap casing.  ... 
arXiv:2102.05607v1 fatcat:dvk3pdfjrfg35nppsf5dspfe5y

The iWildCam 2020 Competition Dataset [article]

Sara Beery, Elijah Cole, Arvi Gjoka
2020 arXiv   pre-print
Camera traps enable the automatic collection of large quantities of image data. Biologists all over the world use camera traps to monitor animal populations.  ...  We have recently been making strides towards automatic species classification in camera trap images.  ...  This work was supported in part by NSF GRFP Grant No. 1745301. The views are those of the authors and do not necessarily reflect the views of the NSF.  ... 
arXiv:2004.10340v1 fatcat:se2ahdwpazhx7jwln2hx33ique

Photo-ID as a tool for studying and monitoring the endangered Saimaa ringed seal

M Koivuniemi, M Auttila, M Niemi, R Levänen, M Kunnasranta
2016 Endangered Species Research  
In the majority of game camera images, both sides of the seal were shown, and it was possible to determine the sex of the seal.  ...  A total of 220 000 digital images of seals were obtained from these game cameras and from digital cameras during this period, allowing 164 individuals to be identified, 43% of which were re-sighted in  ...  We thank all the people who supplied photographs and all those who worked on the camera trapping, including H. Buuri, M. Käyhkö, T. Laitinen, L. Liukkonen, M. Margaritis, T. Nisula, S. Oksanen, T.  ... 
doi:10.3354/esr00723 fatcat:jkwdziv25vg5tk76sl2ylmt4dm

Monitoring wild animal communities with arrays of motion sensitive camera traps [article]

Roland Kays, Sameer Tilak, Bart Kranstauber, Patrick A. Jansen, Chris Carbone, Marcus J. Rowcliffe, Tony Fountain, Jay Eggert, Zhihai He
2010 arXiv   pre-print
Motion sensitive camera traps offer a visual sensor to record the presence of a broad range of species providing location -specific information on movement and behavior.  ...  scale over larger areas and time spans.  ...  Camera Hardware Requirements: The components of a camera trap sensor network are simple in being; a collection of camera traps which are deployed in the field, a series of memory cards used to record images  ... 
arXiv:1009.5718v1 fatcat:yzyed42kdzahzep3gul3sydoo4

Camera traps as sensor networks for monitoring animal communities

Roland Kays, Bart Kranstauber, Patrick Jansen, Chris Carbone, Marcus Rowcliffe, Tony Fountain, Sameer Tilak
2009 2009 IEEE 34th Conference on Local Computer Networks  
Motion sensitive camera traps offer a visual sensor to record the presence of a broad range of species providing locationspecific information on movement and behavior.  ...  scale over larger areas and time spans.  ...  Camera Hardware Requirements: The components of a camera trap sensor network are simple in being; a collection of camera traps which are deployed in the field, a series of memory cards used to record images  ... 
doi:10.1109/lcn.2009.5355046 dblp:conf/lcn/KaysKJCRFT09 fatcat:dpyewenav5as7jyrfokfgeaveq

An evaluation of camera trap performance - What are we missing and does deployment height matter?

Caitlin E. Jacobs, David E. Ausband, Marcus Rowcliffe
2018 Remote Sensing in Ecology and Conservation  
To improve the reliability of camera trap studies and provide more knowledge on camera performance, we evaluated three aspects of camera traps that researchers should considercamera height, blank images  ...  We deployed 20 camera stations, each consisting of one low camera (0.6 m) and two adjacent high cameras (3 m). We tested for differences in detection rates and blank images between camera heights.  ...  Schirf, for their dedication in the field and for all of the cameras they installed and took down. We also thank M. Hurley and S. Roberts.  ... 
doi:10.1002/rse2.81 fatcat:xcamurpejfg7tfe2x5el2xwiye

Observation of magnetic nanoparticles ring formation and dynamics with fast video camera

Marcin Bacia, Jan Masajada, Slawomir Drobczynski
2013 Photonics Letters of Poland  
This behavior was observed in slow motion. The creation of dark rings is a very dynamic process which was further described in the following paper.  ...  Holographic optical tweezers were used to show the interaction between a strongly focused laser beam and magnetic nanoparticles in a ferrofluid.  ...  Optical traps were created and controlled by a spatial light modulator (LCSLM). Images were taken by camera under white-light illumination.  ... 
doi:10.4302/plp.2013.4.06 fatcat:jrrmsx4srbho5f3icpaxuuzkxa
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