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Digital processing techniques and film density calibration for printing image data

Pecora XI Symposium

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Abstract

Satellite image data that cover a wide range of environments are being used to make prints that represent a map type product. If a wide distribution of these products is desired, they are printed using lithographic rather than photographic procedures to reduce the cost per print. Problems are encountered in the photo lab if the film products to be used for lithographic printing have the same density range and density curve characteristics as the film used for photographic printing. A method is presented that keeps the film densities within the 1.1 range required for lithographic printing, but generates film products with contrast similar to that in photographic film for the majority of data (80 percent). Also, spatial filters can be used to enhance local detail in dark and bright regions, as well as to sharpen the final image product using edge enhancement techniques.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Digital processing techniques and film density calibration for printing image data
Series title:
Pecora XI Symposium
Year Published:
1987
Language:
English
Publisher:
American Society of Photogrammetry
Publisher location:
Falls Church, VA
Description:
10 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Pecora XI Symposium
First page:
293
Last page:
302
Number of Pages:
10