One of the photographic techniques which shows great promise as an aid in interpreting ERTS imagery is pseudocolor transformation. It is a process where each shade of gray in an original black-and-white image is seen as a different color in the transformation. The well known ERTS-1 MSS image of the Monterey Bay-San Francisco area was transformed using a technique which requires only two intermediate separations. Possible faults were delineated on an overlay of the transformation before referring to geologic maps. The results were quite remarkable in that all large active or recently active faults shown on the latest geologic map of California were interpreted from the image for all, or much, of their length. Perhaps the most interesting result was the Reliz fault. The fault is shown as covered; however, a lineation corresponding to the position of the fault is visible on the image. The usefulness of ERTS image in identifying recently active faults is demonstrable. Although the faults are also visible in the unenhanced image, they are clearly accentuated and more easily mapped on the pseudocolor transformation.

Lamar, J. V.↗

NASA NTRS1969

Satellite imagery of the earth.

Satellite IR hyperaltitude imagery for earth resources application, obtaining geological, meteorological and hydrological information

Cronin, J.↗

NASA NTRS1966

Terrain seen from Tiros.

Physiographic and geologic features revealed through analysis of pictures from Tiros satellites, useful for terrain information

PHOTOGRAPH INTERPRETATION↗

NASA NTRS1964

Photo interpretation of White Sands rocket photography Report no. 2

Photograph interpretation of V-2, Viking, and Aerobee rocket photography

ROCKET PHOTOGRAPHY↗