Photography – Sensitometry
Reexamination Certificate
2005-07-12
2005-07-12
Perkey, W. B. (Department: 2851)
Photography
Sensitometry
C430S359000
Reexamination Certificate
active
06917758
ABSTRACT:
A method for obtaining an adjusted digital image which is compensated for a watermark exposure is described comprising: determining a first sensitometric response of a photographic media without a watermark exposure; determining a second sensitometric response of the photographic media with a watermark exposure; generating a look-up table (LUT) from the first and second sensitometric responses; and modifying a digital representation of an image which is to be printed onto the photographic media in accordance with the look-up table to produce an adjusted digital image. The adjusted digital image may be printed directly onto a final print photographic film that receives a watermark exposure, or may be printed onto a printing negative photographic film to produce a printing negative with an adjusted image, which adjusted image is then printed onto a final print photographic film that receives a watermark exposure. In another embodiment, the characteristic response of a digital film printer may be modified in accordance with a LUT generated from the first and second sensitometric responses, instead of modifying the digital representation of the image which is to be printed onto the photographic media.
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Roy Berns; Billmeyer and Saltzman's Principles of Color Technology, Third Edition; 2000, pp. 14-16.
Jones Paul W.
Zolla Robert J.
Anderson Andrew J.
Eastman Kodak Company
Perkey W. B.
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