NASA NTRS · 19760000057
CONVERT: Technique and computer program for calculating photographic film-density variations
Abstract
Binary-coded-decimal microdensitometer output is converted into number representing film-density difference between unexposed film border and any data point on photograph, while also correcting for atmospheric backscattering and lens vignetting.
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Ohlhorst, C. W.. 1976-03-01. CONVERT: Technique and computer program for calculating photographic film-density variations. https://ntrs.nasa.gov/citations/19760000057
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