IMAGE CONTRAST OF SINUSOIDAL SIGNALS
- 1 June 1973
- journal article
- Published by American Roentgen Ray Society in American Journal of Roentgenology
- Vol. 118 (2) , 293-299
- https://doi.org/10.2214/ajr.118.2.293
Abstract
Image contrast as displayed on a radiographic film or a fluoroscopic screen is the end result of a complex interplay of several parameters such as the input exposure contrast, screen characteristics, system MTF, magnitude of scattered radiation and the degree of statistical fluctuation. In this paper expressions have been derived for the image contrast and its standard deviation in the case of sinusoidal input signals. The usefulness of these expressions in the experimental evaluation of different imaging systems is also discussed.Keywords
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