Sampling

doi:10.1117/3.2524677.ch9

Sampling

Book: CMOS/CCD Sensors and Camera Systems, Second Edition

Author(s): Gerald C. Holst, Terrence S. Lomheim

Published: 2011

https://doi.org/10.1117/3.2524677.ch9

Author Affiliations +

Abstract

Sampling is an inherent feature of all electronic imaging systems. The scene is spatially sampled in both directions due to the discrete locations of the detector elements. This sampling creates ambiguity in target edges and produces moiré patterns when viewing periodic targets. Aliasing becomes obvious when image features approach the detector size. Spatial aliasing is rarely seen in photographs or motion pictures because the grains are randomly dispersed in the photographic emulsion.