Kalman filters are often used to estimate the state variables of a dynamic system. However, in the application of Kalman filters some known signal information is often either ignored or dealt with heuristically. For instance, state-variable constraints (which may be based on physical considerations) are often neglected because they do not fit easily into the structure of the Kalman filter. This...

In the comments provided in [1], the authors showed that through off-line convex optimization, the filter performance of [2] can be improved through an appropriate combination of ellipsoids determined by the actual plant states and structured model uncertainties. These guidelines are interesting and useful to improve the performance of the filter we proposed in [2]. However, based on simulation...

In this paper, a method for the design of perfect reconstruction (PR) linear-phase prototypes for cosine-modulated filter banks with discrete coefficients is presented. Such prototypes are of great interest for efficient hardware implementations. The design procedure is based on a subspace approach that allows to linearly combine PR prototype filters in such a way that the resulting filter also...

The aim of this paper is to analyze the performance of adaptive synthesis filter banks for image compression at low bit rates. In adaptive synthesis filter banks, analysis section comprises of linear phase filters whereas, synthesis section manages a combination of linear phase and non linear filters (in form of delay filters). The adaptive synthesis filter banks have advantages over convention...

In this paper, we present an iterative improvement of the guided image filter for flash/no-flash photography. The guided filter [8] utilizes a guide image to enhance a corrupted input image as similarly done in the joint bilateral filter [3, 12]. The guided filter has proved to be effective for such applications as high dynamic range compression, image matting, haze removal, and flash/no-flash ...

A miniaturized ultra wideband (UWB) bandpass filter with improved out-of band performances is presented in this paper. Based on the combination of low-pass and high-pass filters, the UWB filter is realized in a semilumped technology using microstrip transmission lines and surface mounted capacitors. In this paper, the filter design rules have been carried out. Furthermore, filters having a 3-dB...

This paper addresses the problem of mobile sensor localization and tracking in an obstructed environment. To solve this problem, a combination of three approaches is proposed: a nonlinear Kalman Filter to estimate the mobile position, a sub filter used jointly with the nonlinear filter to estimate the bias due to the Non-Line Of Sight (NLOS) effect and a low complexity method for Line Of Sight ...

Abstract. According to recent literature, the most appropriate preprocessing to improve P300 detection is still unknown or at least there is no consensus about it. Research papers refer to different low-pass filters, high-pass filters, baseline, subsampling or feature selection. In this paper, using a database with 23 healthy subjects we compare the effect on the letter accuracy (single-trial d...

This paper presents an estimation technique using the Kalman filter finite element method ( KFFEM ). Estimation value that is not observed is estimated by KF-FEM, which is the combination method of the Kalman filter and the finite element method. The Kalman filter is employed for the solution of time series analysis and the finite element method is space analysis. In this paper the shallow wate...

The spam has now become a significant security issue and a massive drain on financial resources. In this paper, a spam filter is introduced, which works at the server side. The proposed filter is a combination of antispam techniques. The integrated solution create a spam filtering system which is more robust and effective than each of the comprising techniques. The task of proposed filter is to...