نتایج جستجو برای: t lter

تعداد نتایج: 705468  

1995
Paul M. Furth Andreas G. Andreou

We detail the design of multiresolution analog lter banks, linear models of cochlear function, with power dissipation being a prime engineering constraint. We propose that a reasonable goodness criterion is the information rate through the system, per Watt of power dissipated. Speech applications requiring lter banks with a wide frequency tuning range, from 20 Hz to 20 kHz, and low power consum...

2011
Umut Orguner Christian Lundquist Karl Granström

This technical report presents a cardinalized probability hypothesis density (CPHD) lter for extended targets that can result in multiple measurements at each scan. The probability hypothesis density (PHD) lter for such targets has already been derived by Mahler and a Gaussian mixture implementation has been proposed recently. This work relaxes the Poisson assumptions of the extended target PHD...

2000
H C So

A number of adaptive algorithms for estimating time di erence between signals received at two spatially separated sensors have been proposed to model the delay using an FIR lter Among them there are the LMSTDE CTDE ETDE SETDE and ETDGE which are com putationally e cient because of the LMS implementation In this paper these ve methods are compared in terms of estimation accuracy and computationa...

1998
M. Matsui R. L. Rivest

In this appendix we present an eecient implementation of the lter described in Section 3.1. One must place ciphertext diierences after (2r ?1)th round (one half-round before the last half-round) into DLevel + 1] and DLevel] before calling the lter. These diierences can be calculated (for RC5) from the known ciphertext diierences and the known rotation amount of the last round. A call to the lte...

Journal: :Stroke 1982
N J Abdon O Zettervall J Carlson S Berglund G Sterner L Tejler I Turesson

To assess the importance of occult atrial disorder with possible embolization as a cause of non-hemorrhagic stroke, 68 patients with neurologic symptoms lasting 24 hours or more and 18 patients with transient ischemic attacks were examined by long-term electrocardiographic recording (LTER). Lacking matched controls we used a reference population of 103 elderly subjects selected at random from t...

1997
Julia J. Liu

Image and video signals are sometimes corrupted by Gaussian noise. Wiener ltering could reduce noise eeectively. Wiener lter is the best linear restoration lter in the sense of mean square error (MSE). In this project, Wiener lters were implemented to reduce noise in noisy images and video sequences. The lter taps of Wiener lter adapt with local signal and noise statistics. This report has four...

2014
Takuya Matsuo Naoki Kodera Norishige Fukushima Yutaka Ishibashi

In this paper, we propose a re nement lter for depth maps. The lter convolutes an image and a depth map with a cross computed kernel. We call the lter joint trilateral lter. Main advantages of the proposed method are that the lter ts outlines of objects in the depth map to silhouettes in the image, and the lter reduces Gaussian noise in other areas. The e ects reduce rendering artifacts when a ...

1998
Cheng-Shang Chang Rene L. Cruz

By extending the ltering theory under the (min; +)-algebra to the time varying setting, we solve the problem of constrained traac regulation and develop a calculus for dynamic service guarantees. For a constrained traac regulation problem with maximum tolerable delay d and maximum buuer size q, the optimal regulator that generates the output traac conforming to a subadditive envelope f and mini...

2010
Karl Granström Christian Lundquist Umut Orguner

In extended target tracking, targets potentially produce more than one measurement per time step. Multiple extended targets are therefore usually hard to track, due to the resulting complex data association. The main contribution of this paper is the implementation of a Probability Hypothesis Density (phd) lter for tracking of multiple extended targets. A general modi cation of the phd lter to ...

1994
Hans Knutsson Hans Andersson

In this paper it is shown how estimates of local structure and orientation can be obtained using a set of spherically separable quadrature lters. The method is applicable to signals of any dimensionality the only requirement being that the lter set spans the corresponding orientation space. The estimates produced are 2:nd order tensors, the size of the tensors corresponding to the dimensionalit...

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