A new method to extract retinal blood vessels from a colour fundus image is described. Digital colour h d u s images are contrast enhanced in order to obtain sharp edges. The green bands are selected and transformed to correlation coefficient images by using two sets of Gaussian kernel patches of distinct scales of resolution. Blood vessels are then extracted by means of a new algorithm, direct...

The problem of generating discrete sufficient statistics for signal processing in code-division multiple-access (CDMA) systems is considered in the context of underlying channel bandwidth restrictions. Discretization schemes are identified for (approximately) band-limited CDMA systems, and a notion of approximate sufficiency is introduced. The role of chip-matched filtering in generating accura...

2 Brain-machine interfaces rely on extracting motor control signals from brain activity in real time 3 to actuate external devices such as robotic limbs. Whereas biomimetic approaches to neural 4 decoding use motor imagery/observation signals, non-biomimetic approaches assign an arbi5 trary transformation that maps neural activity to motor control signals. In this work, we present 6 a unified f...

In this paper, a new 1-D hybrid Automatic Target Recognition (ATR) algorithm is developed for High Range Resolution (HRR) profiles. The proposed hybrid algorithm combines EigenTemplate based Matched Filtering (ETMF) and Hidden Markov modeling (HMM) techniques to achieve superior HRR-ATR performance. In the algorithm, each HRR test profile is first scored by ETMF which is then followed by indepe...

S U M M A R Y A newMatched Filtering Algorithm (MFA) is proposed for detecting and analysing microseismic events recorded by downhole monitoring of hydraulic fracturing. This method requires a set ofwell-located template (‘parent’) events, which are obtained using conventionalmicroseismic processing and selected on the basis of high signal-to-noise (S/N) ratio and representative spatial distrib...

In this paper, a new 1-D hybrid Automatic Target Recognition (ATR) algorithm is developed for sequential High Range Resolution (HRR) radar signatures. The proposed hybrid algorithm combines Eigen-Template based Matched Filtering (ETMF) and Hidden Markov modeling (HMM) techniques to achieve superior HRR-ATR performance. In the proposed hybrid approach, each HRR test profile is first scored by ET...

The structure and appearance of the blood vessel network in retinal fundus images is an essential part of diagnosing various problems associated with the eyes, such as diabetes and hypertension. In this paper, an automatic retinal vessel segmentation method utilizing matched filter techniques coupled with an AdaBoost classifier is proposed. The fundus image is enhanced using morphological opera...

We report on a new beam-forming system for generating high intensity programmable optical spikes using so-called matched-filtering Generalized Phase Contrast (mGPC) applying two consumer handheld pico-projectors. Such a system presents a low-cost alternative for optical trapping and manipulation, optical lattices and other beam-shaping applications usually implemented with high-end spatial ligh...

Received (received date) Revised (revised date) We propose an adaptive denoising scheme for poorly modeled non-Gaussian features in the gravitational wave interferometric data. Preliminary tests on real data show encouraging results. 1. Motivation Several large-scale interferometric gravitational wave detectors will come on-line soon, such as LIGO in the U.S., the French/Italian Virgo project, ...

In this paper, we focus on the design of transmit waveforms a frequency diverse array (FDA) in order to improve output signal-to-interference-plus-noise ratio (SINR) presence signal-dependent mainlobe interference. Since classical multi-carrier matched filtering-based FDA receiver cannot effectively utilize waveform diversity FDA, novel framework based multi-channel mixing and low pass filterin...