Capability of the Proper Orthogonal Decomposition (POD) method in extraction of the coherent structures from a spatio-temporal chaotic field is assessed in this paper. As the chaotic field, an ensemble of 40 snapshots, obtained from Direct Numerical Simulation (DNS) of the Kuramoto-Sivashinsky (KS) equation, has been used. Contrary to the usual methods, where the ergodicity of the field is need...

I propose a new filtering technique to separate bathymetric data into regional and residual components. Directional median (DiM) filtering divides a given filter circle into N "bow-tie" sectors, allocates the data points inside the filter circle to each bowtie sector based on their relative position with respect to the center of the filter circle, estimates a median value for each sector, and r...

This paper highlights some fast algorithms for image filtering, specifically – box and Gaussian smoothing, Hann filtering, median filtering, and morphological operations. It is shown that some of these algorithms can be implemented with computational cost independent of a filter radius.

CDMA systems are limited by the interference that users create for each other. Several methods of controlling and/or suppressing the interference through power control, multiuser detection (temporal filtering) and beamforming (spatial filtering) are studied to increase the capacity of CDMA systems [ 1-31. We investigate the capacity increase that is possible by combining power control with inte...

We propose a novel spatio-temporal filtering technique to improve the per-pixel prediction map, by leveraging the spatio-temporal smoothness of the video signal. Different from previous techniques that perform spatio-temporal filtering in an offline/batch mode, e.g., through graphical model, our filtering can be implemented online and in real-time, with provable lowest computational complexity....