Determination of film characteristic curves from density histograms

Details Determination of film characteristic curves from density histograms Determination of film characteristic curves from density histograms

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..402c&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, March 1988, p. 402-406.

Other

8

Astronomical Photography, Photographic Film, Solar Instruments, Density Distribution, Histograms, Rocket-Borne Instruments

Scientific paper

A method for producing the film characteristic curve from exposures of the same image field with varying exposure times is developed, using the film density histogram distributions of the individual exposures. This method is appropriate for cases where a standard step wedge or other sensitometric calibration is not available, and where film reciprocity can be assumed for the exposure times used. The method is very general and incorporates as much of the film density information as the user desires.

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