Accession Number:

AD0420923

Title:

QUALITY CATEGORIZATION OF AERIAL RECONNAISSANCE PHOTOGRAPHY

Descriptive Note:

Final rept.

Corporate Author:

CORNELL AERONAUTICAL LAB INC BUFFALO NY

Report Date:

1963-09-30

Pagination or Media Count:

131.0

Abstract:

The derivation of a summary measure which would relate measurable photographic parameters to the information content which a photointerpreter could extract from the photograph was investigated. Four parameters of quality were chosen which describe image contrast, grain, and modulation curve resolution and passband. Image modification methods and measuring techniques which could be used without recourse to test charts were developed for black and white photographs. A thousand photographs with a range of quality parameters were generated and used in interpretation tests. Standard statistical methods were employed in an attempt to obtain the correlation between the photointerprete scores and the measured variables of the photographs. However, these procedures did not permit a meaningful summary measure to be derived, primarily because of the low scores achieved by the photointerpreters who took the test. Conclusions have been drawn relating to image modification, measurement of quality parameters and planning of future tests.

Subject Categories:

  • Cartography and Aerial Photography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE