Digital processing techniques and film density calibration for printing image data
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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.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Digital processing techniques and film density calibration for printing image data |
| Year Published | 1987 |
| Language | English |
| Publisher | American Society of Photogrammetry |
| Publisher location | Falls Church, VA |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 10 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | Pecora XI Symposium |
| First page | 293 |
| Last page | 302 |
| Google Analytic Metrics | Metrics page |