Oversampling of digitized images

Details Oversampling of digitized images Oversampling of digitized images

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976aj.....81..285f&link_type=abstract

Astronomical Journal, vol. 81, Apr. 1976, p. 285-291.

Astronomy and Astrophysics

Astronomy

3

Data Sampling, Digital Systems, Imaging Techniques, Interpolation, Signal Processing, Error Analysis, Pattern Recognition, Signal Detectors

Scientific paper

Oversampling is defined as sampling with a device whose characteristic width is greater than the interval between samples. This paper shows why oversampling should be avoided and discusses the limitations in data processing if circumstances dictate that oversampling cannot be circumvented. Principally, oversampling should not be used to provide interpolating data points. Rather, the time spent oversampling should be used to obtain more signal with less relative error, and the Sampling Theorem should be employed to provide any desired interpolated values. The concepts are applicable to single-element and multielement detectors.

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