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Autographic theme extraction

General Interest Publication

By:
and

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Abstract

Remote-sensor images, including aerial and space photographs, are generally recorded on film, where the differences in density create the image of the scene. With panchromatic and multiband systems the density differences are recorded in shades of gray. On color or color infrared film, with the emulsion containing dyes sensitive to different wavelengths, a color image is created by a combination of color densities. The colors, however, can be separated by filtering or other techniques, and the color image reduced to monochromatic images in which each of the separated bands is recorded as a function of the gray scale.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Unnumbered Series
Title:
Autographic theme extraction
Series title:
General Interest Publication
Year Published:
1973
Language:
ENGLISH
Description:
7 p. : col. maps ; 23 cm.