Filters








34,822 Hits in 5.9 sec

A framework for activity-specific human identification

Amit Kale, Naresh Cuntoor, Rama Chellappa
2002 IEEE International Conference on Acoustics Speech and Signal Processing  
Human identification performance of the proposed scheme is found to be quite good when tested on outdoor video sequences collected using surveillance cameras.  ...  The width of the outer contour of the binarized silhouette of a walking person is chosen as the image feature. A set of exemplars that occur during an activity cycle is chosen for each individual.  ...  Fig. 3 . 3 fast walk (8 cycles); test on fast walk(8 cycles)) Train on slow walk(8 cycles); test on slow walk(8 cycles)) Train on fast walk (8 cycles) ; test on slow walk(8 cycles) Train on slow walk (  ... 
doi:10.1109/icassp.2002.5745449 dblp:conf/icassp/KaleCC02 fatcat:zuuryvq4vnb2thmdlwvioywgei

A framework for activity-specific human identification

Kale, Cuntoor, Chellappa
2002 IIEEE International Conference on Acoustics Speech and Signal Processing  
Human identification performance of the proposed scheme is found to be quite good when tested on outdoor video sequences collected using surveillance cameras.  ...  The width of the outer contour of the binarized silhouette of a walking person is chosen as the image feature. A set of exemplars that occur during an activity cycle is chosen for each individual.  ...  Fig. 3 . 3 fast walk (8 cycles); test on fast walk(8 cycles)) Train on slow walk(8 cycles); test on slow walk(8 cycles)) Train on fast walk (8 cycles) ; test on slow walk(8 cycles) Train on slow walk (  ... 
doi:10.1109/icassp.2002.1004710 fatcat:drxa7yzaybfhhgwuuacgshnvba

Development of Fast-RCNN based Dynamic Object Detection Using an Object Motion Tracking Device in Marine Environments

2020 Asia-pacific Journal of Convergent Research Interchange  
Objects are recognized using the Fast-RCNN algorithm, and their positions are measured through the transformation of an image coordinate system.  ...  A gimbal control method for a camera using only the image center and distance information of objects without using the camera's focus and zoom function was proposed.  ...  Acknowledgments This development project was supported by the LIG Nex1 (20192610).  ... 
doi:10.21742/apjcri.2020.03.05 fatcat:axovvgxydndttcxwokjhj3kmay

State estimation of fast-rate systems using slow-rate image sensors

Jacopo Tani, Sandipan Mishra, John Wen
2013 2013 American Control Conference  
Experimental results on a fast-rate beam steering mirror and a slow-rate image sensor verify that using the integrative sensor model and exploiting its structure for state estimation can result in lower  ...  This paper presents algorithms for state estimation of adaptive optics (AO) systems with fast-rate actuators and slow-rate image sensors.  ...  This information can be used to estimate the states of a fast rate system through slow rate image sensor measurements.  ... 
doi:10.1109/acc.2013.6580809 fatcat:5yefhiky2zah7kwqwrfdkwzi2u

Arterial travel time estimation based on vehicle re-identification using magnetic sensors: Performance analysis

Rene O. Sanchez, Christopher Flores, Roberto Horowitz, Ram Rajagopal, Pravin Varaiya
2011 2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)  
The original method has a 62% re-identification rate, while the modified method has a 69% rate.  ...  Both methods are based on the same travel time estimation system, but one of them uses the so called original signal processing algorithm while the other one uses a recently modified version of it.  ...  that led to an increase on the vehicle re-identification rate.  ... 
doi:10.1109/itsc.2011.6083003 dblp:conf/itsc/SanchezFHRV11 fatcat:fpdccrkdtneoza35kevvhfuoku

A Novel Human Gait Recognition Method by Segmenting and Extracting the Region Variance Feature

Yanmei Chai, Qing Wang, Jingping Jia, Rongchun Zhao
2006 18th International Conference on Pattern Recognition (ICPR'06)  
Finally, similarity measurement based on the gait cycles and NN and KNN classifiers are carried out to recognize the different subjects.  ...  Experimental results show that the proposed novel method is very effective and correct recognition rates are over 92% and 97% on UCSD and CMU database, respectively.  ...  on slow-walk and test on fast-walk.  ... 
doi:10.1109/icpr.2006.139 dblp:conf/icpr/ChaiWJZ06 fatcat:pepdeh7uzrb6nloy7hc5uj3fce

Robust Gait-Based Person Identification against Walking Speed Variations

Muhammad Rasyid AQMAR, Koichi SHINODA, Sadaoki FURUI
2012 IEICE transactions on information and systems  
It is based on a combination of cubic higherorder local auto-correlation (CHLAC), gait silhouette-based principal component analysis (GSP), and a statistical framework using hidden Markov models (HMMs)  ...  Variations in walking speed have a strong impact on gaitbased person identification. We propose a method that is robust against walking-speed variations.  ...  On a reverse condition where the speed at 4.5 km/hr as training set and speed at 3.3 km/hr as testing set, the identification rate of our method is 96% and the identification rate of Tsuji et al.  ... 
doi:10.1587/transinf.e95.d.668 fatcat:guzqjx4jfjaxzps7k3wv42qvtu

System Identification and Signal Processing for PID Control of B0 Shim Systems in Ultra-High Field Magnetic Resonance Applications

Yu-Chun Chang, Nikolai Avdievich, Anke Henning
2014 IFAC Proceedings Volumes  
However DSU is currently very slow and if we intend to increase the update rate then control theory needs to be applied.  ...  B0 shimming is a technique used to reduce inhomogeneities but most MR scanners use static shim settings for the duration of the experiment.  ...  of the NMR probes.  ... 
doi:10.3182/20140824-6-za-1003.01828 fatcat:s66dfs45mnc33l3f2ib4uonnpu

An Advanced ICTVSS Model for Real-Time Vehicle Traffic Applications

You-Shyang Chen, Chien-Ku Lin, Yao-Wen Kan
2019 Sensors  
, and processing constant-inconstant light source from complex environment cases, and guaranteed effective license plate identification from the benefit of high resolutions of digital cameras.  ...  Given such a combination, a novel algorithm of dynamic license identification for smart monitoring was fully realized for constructing a well-defined smart city.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s19194134 fatcat:yhct4sqn7jc5zlx2pgkobqvab4

Real-time measurements, rare events and photon economics

B. Jalali, D.R. Solli, K. Goda, K. Tsia, C. Ropers
2010 The European Physical Journal Special Topics  
Attempts to understand the underlying dynamics of such complex systems that lead to spectacular and often cataclysmic outcomes have been frustrated by the scarcity of events, resulting in insufficient  ...  One solution is a real-time ultrafast instrument that is capable of capturing singular and randomly occurring nonrepetitive events.  ...  While useful for imaging of stationary or slow objects, conventional CCD and CMOS cameras have difficulty in capturing fast dynamical processes with high sensitivity at high speed [16] .  ... 
doi:10.1140/epjst/e2010-01245-8 fatcat:wfo373xwbze4fktdesqhnagfiy

Vision based Human Gait Recognition System: Observations, Pragmatic Conditions and Datasets

V. G. Manjunatha Guru, V. N. Kamalesh
2015 Indian Journal of Science and Technology  
We also discuss in detail the pragmatic conditions of gait and efficient utilization of standard datasets in order to use gait recognition systems in masses.  ...  Gait uniquely distinguishes the persons by using their physiological and psychological state.  ...  Experiment carried out on small CMU MoBo database and by using NN, Equal Error Rates (EER) of 94.23%, 82.28%, and 90.38% for PCA only and 96.15%, 82.70% and 92.30% for PCA with RT for slow walk, fast walk  ... 
doi:10.17485/ijst/2015/v8i15/71237 fatcat:nnwaj2ukl5gd3lzmxith4qh3nu

Gait recognition based on shape and motion analysis of silhouette contours

Sruti Das Choudhury, Tardi Tjahjadi
2013 Computer Vision and Image Understanding  
In phase 3, dynamic time warping is used to analyse the angular rotation pattern of the subject's leading knee with a consideration of arm-swing over a gait period to achieve identification that is invariant  ...  The match scores generated in the three phases are fused using weight-based score-level fusion for robust identification in the presence of missing and distorted frames, and occlusion in the scene.  ...  Acknowledgments The authors would like to thank Warwick Postgraduate Research Scholarship for providing the funds for this research.  ... 
doi:10.1016/j.cviu.2013.08.003 fatcat:g6xn2zifonbijbhyxv2btyki7i

Grab: Fast and Accurate Sensor Processing for Cashier-Free Shopping [article]

Xiaochen Liu, Yurong Jiang, Kyu-Han Kim, Ramesh Govindan
2020 arXiv   pre-print
In experiments from a pilot deployment in a retail store, Grab can achieve over 90% precision and recall even when 40% of shopping actions are designed to confuse the system.  ...  It also uses a probabilistic framework to fuse readings from camera, weight and RFID sensors in order to accurately assess which shopper picks up which item.  ...  We computed both the average frame rate and the precision achieved by these DNNs on our data (Table 1) . For face detection, our accuracy measures the precision of face identification.  ... 
arXiv:2001.01033v1 fatcat:3euzyyuz6bcnnopa6wyngf6dvy

Ascertaining Human Identity in Night Environments [chapter]

T. Bourlai, N. Kalka, D. Cao, B. Decann, Z. Jafri, F. Nicolo, C. Whitelam, J. Zuo, D. Adjeroh, B. Cukic, J. Dawson, L. Hornak (+2 others)
2011 Distributed Video Sensor Networks  
Our preliminary research indicates the challenges in performing human identification in night-time environments.  ...  Understanding patterns of human activity from the fusion of multimodal sensor surveillance sources is an important capability.  ...  Acknowledgements This work was funded in part by grants from the Office of Naval Research, and the National Science Foundation's Center for Identification Technology Research (CITeR).  ... 
doi:10.1007/978-0-85729-127-1_30 fatcat:fwfhluzfwveqhbee3ryl4caizu

High speed laser tomography system

D. Samsonov, A. Elsaesser, A. Edwards, H. M. Thomas, G. E. Morfill
2008 Review of Scientific Instruments  
The system was used to image a complex plasma with particles moving at speeds up to cm/s.  ...  The 2D slices were stacked to form 3D images of the volume, then the positions of the particles were identified and followed in the consecutive scans.  ...  The third system is slow and not synchronized with the video camera, and is therefore only useful in measuring static structures.  ... 
doi:10.1063/1.2885683 pmid:18377040 fatcat:wsdjhouskjezliya5solgzqdeu
« Previous Showing results 1 — 15 out of 34,822 results