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Background suppression in double-beam interferometry
Applied Optics, 1979An optical background suppression technique is described in which the lower spatial frequencies of a background field are effectively suppressed, thereby enhancing the detectability of localized sources. The technique is particularly applicable for use in image-forming double-beam interferometers in which the individual detector elements are matched to
T F, Zehnpfennig +4 more
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Background suppression in MAS NMR
Journal of Magnetic Resonance (1969), 1992Abstract Pulse sequences for suppressing background signals from spinning modules used in magic-angle spinning NMR are described. These pulse sequences are based on spatially selective composite 90° pulses originally reported by Bax, which provide for no net excitation of spins outside the homogeneous region of the coil.
Jeffery L White +3 more
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Principal component background suppression
1996 IEEE Aerospace Applications Conference. Proceedings, 2002We have developed an adaptable background suppression algorithm, based on the statistical technique of principal components, to mitigate the effects of sensor line of sight motion (clutter) across structured background scenes. The central idea is construction of a "background space" as a linear vector subspace modeling the background being viewed.
J.A. Kirk, M. Donofrio
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A harbor background suppression approach
SPIE Proceedings, 2015In order to resolve false segmentation and false tracking problems caused by the influence of complex harbor background during IR moving target detection, a harbor background suppression approach is presented. Firstly, Sky-sea line region can be obtained by Otsu segmentation, which is applied to split images obtained through wavelet transform. Secondly,
Xun Gong, Wen-Jun Shi
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IR Background Suppression Studies,
1977Abstract : A brief description of the background suppression scheme is described, and results obtained using the defocussing technique are presented. It has been demonstrated that a background suppression ratio of two orders of magnitudes can be obtained.
null Jr +5 more
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LPC voice digitizer with background noise suppression
ICASSP '79. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005This paper describes a unique design that attacks two problem areas of LPC: noise suppression input level control and real time simulation/ test. The noise level design uses algorithms to digitally process speech data before input to the LPC algorithm processor.
Donald P. Fulghum, J. E. Gunn III
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Backgrounding and suppression of reciprocal participants
Studies in Language, 2007According to traditional wisdom, reciprocal predicates can only occur with plural subjects. This is assumed either because the reciprocal predicates in question are constructed by means of a reciprocal anaphor, which is considered as being inherently plural and hence requiring a plural antecedent, or, if there is no binding requirement, the following ...
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Background-Suppressed Correlation Filters for Visual Tracking
2018 IEEE International Conference on Multimedia and Expo (ICME), 2018Correlation filters (CF) visual object tracking is a powerful framework, with excellent tracking accuracy and beyond realtime frame rate. Its performance, however, can be severely degraded in cluttered background images. In this paper, we propose background-suppressed correlation filters (BSCF), a better CF tracking scheme, which can significantly ...
Zhihao Chen 0004 +3 more
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Person re-Identification with Gradual Background Suppression
2019 IEEE International Conference on Multimedia and Expo (ICME), 2019Person re-identification plays an important role in public security. However, owing to the interference of background clutters, its performance still needs to be improved. Several mask-based methods aim to solve this problem by totally removing the background clutters, but the promotion is limited because of the mask sharpening effect.
Yingzhi Tang +5 more
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Automatic background noise suppression
The Journal of the Acoustical Society of America, 1985A circuit for suppressing background noise of a continuous nature while enhancing speech signals, or signals having the transient temporal qualities of speech, includes a signal multiplier which, in the preferred embodiment, receives the composite audio signal along with a control signal present only when the speech component of the audio signal is ...
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