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Title: Fourier smoothing of digital photographic spectra
Authors: Anupama, G. C
Keywords: Reduction techniques;Photographic spectroscopy
Issue Date: Mar-1990
Publisher: Astronomical Society of India
Citation: BASI, Vol. 18, No. 1 & 2, pp. 89-96
Abstract: Fourier methods of smoothing one-dimensional data are discussed with particular reference to digital photographic spectra. Data smoothed using lowpass filters with different cut-off frequencies are intercompared. A method to scale densities in order to remove the dependence of grain noise on density is described. Optimal filtering technique which models signal and noise in Fourier domain is also explained
Appears in Collections:BASI Publications

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