On Application of the Fourier Transform Band Pass Filtering Technique

Implementation of Band Pass Filter for Homomorphic Filtering Technique

In order to improve the performance of homomorphic filtering technique for face images, band pass filter is selected to replace the conventional high pass filter in homomorphic filtering technique. Apart from the noise reduction capability, the band pass filter is specifically designed for face images as it is based on the locations of illumination component in Fourier spectrum. The qualitative...

A Fast Fourier Transform Technique and Its Application to Fourier Spectroscopy

Radar Matched Filtering using the Fractional Fourier Transform

A matched filter is the optimal linear filter for maximizing the signal to noise ratio (SNR) in the presence of additive noise. Matched filters are commonly used in radar systems where the transmitted signal is known and may be used as a replica to be correlated with the received signal which can be carried out by multiplication in the frequency domain by applying Fourier Transform (FT). Fracti...

Technique for the metrology calibration of a Fourier transform spectrometer.

A method is presented for using a Fourier transform spectrometer (FTS) to calibrate the metrology of a second FTS. This technique is particularly useful when the second FTS is inside a cryostat or otherwise inaccessible.

Nonlinear inversion of a band-limited Fourier transform

Article history: Available online 3 May 2009 Communicated by Thomas Strohmer on 22 July 2008