Results 261 to 270 of about 5,352,727 (302)

Multiresolution Based Gaussian Mixture Model for Background Suppression

IEEE Transactions on Image Processing, 2013
This paper aims toward improving background suppression from video frames by incorporating multiresolution features in Gaussian mixture model (GMM). GMM has proven its place for background modeling due to its better applicability and robustness compared with other popular methods in literature. However, GMM fails in a number of situations such as noisy
Dibyendu Mukherjee, Q. M. Jonathan Wu, Thanh Minh Nguyen 0001   +2 more
openaire   +3 more sources

Background suppression in the Edelweiss-III experiment

AIP Conference Proceedings, 2013
In dark matter WIMP searches the neutron shielding plays a crucial role in attenuating neutron flux and hence, suppressing nuclear recoil event rate - one of the key background mimicking WIMP interactions. The transition from EDELWEISS-II to EDELWEISS-III with 40 detectors with increased mass and improved background rejection has required the ...
X.-F. Navick, null EDELWEISS Collaboration   +1 more
openaire   +1 more source

Anomaly Detection and Background Suppression

2016
Anomaly detection is generally carried out in a blind environment with no provided a priori knowledge. With the unavailability of ground truth, a general approach is performed by visual inspection, which is probably the only means of evaluating its effectiveness, in which case background information provides an important piece of information to help ...
openaire   +1 more source

Optothermal detection with suppressed background signal

Infrared Physics, 1991
Abstract A method to significantly improve the sensitivity of optothermal detection is proposed and 100 times sensitivity increase has been obtained due to background signal suppression by reflective coating of the pyroelectric element surface, and by inserting diaphragms into the optothermal cell.
L.S. Vasilenko, A.A. Kovalyov, N.N. Rubtsova   +2 more
openaire   +1 more source

Suppression of background transmission of interference filters

Optics and Spectroscopy, 2000
The possibility of manufacturing interference filters with the transmission coefficient no less than 90% in fixed UV, visible or near IR spectral regions and completely opaque at longer wavelengths is shown. The operation of the filter is based on the method of residual rays. Angular dependences of the filter transmission bandshape on the parameters of
V. Yu. Pervak, Yu. A. Pervak
openaire   +1 more source

Background Optical Suppression System (BOSS),

1979
Abstract : A background optical suppression scheme utilizing a double-beam interferometer-spectrometer with coaligned beams and tailored modulation, transfer functions is presented. The system is designed to enhance the detectability of localized sources in the presence of strong spatially structured background in the IR region of the spectrum.
W. P. Reidy, Saul Rappaport, T. F. Zehnpfennig, O. Shepherd   +3 more
openaire   +1 more source

Background suppression in coherent Raman spectroscopy

Applied Physics Letters, 1976
Background signals which appear in Coherent anti-Stokes Raman spectroscopy and in the Raman-induced Kerr effect can be eliminated using polarization technqiues based upon four-wave mixing. Specific polarization conditions will suppress all signals with the exception of those arising from Raman modes.
J. J. Song, G. L. Eesley, M. D. Levenson
openaire   +1 more source

A Matched Filter For Infrared Background Suppression

SPIE Proceedings, 1988
This paper reports the performance evaluation of a matched filter for IR background suppression and target detection in one atmospheric window of the Middle Infrared Region. This filter is for application in an airborne staring infrared missile warning (IRMW) system.
Sergio Nanni, Luca Nicotra
openaire   +1 more source

Adaptive background modeling with shadow suppression

Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems, 2004
Background subtraction is a typical technique used for real-time segmentation of moving objects in video sequences. A novel background subtraction scheme is presented in this paper. To cope with background change problems such as gradual illumination changes and moved background objects, an efficient background updating algorithm based on Dynamic ...
null Hongzhe Han, null Zhiliang Wang, null Jiwei Liu, null Zhengxi Li, null Bin Li, null Zhongtao Han   +5 more
openaire   +1 more source

CARS Microspectrometer with a Suppressed Nonresonant Background

2009
We describe a multiplex CARS microspectrometer utilizing a photonic crystal fiber. Enhanced contrast is achieved by subtracting the nonresonant signal in real time. The approach is demonstrated on images of polystyrene beads.
R. Zadoyan, T. Baldacchini, M. Karavitis, J. Carter   +3 more
openaire   +1 more source