USE OF AERIAL COLOR PHOTOGRAPHY IN MATERIALS SURVEYS

AERIAL COLOR PHOTOGRAPHY HAS PROVED SUPERIOR TO BLACK-AND- WHITE PHOTOGRAPHY IN MATERIALS SURVEYS CONDUCTED BY THE FEDERAL HIGHWAY PROJECTS OFFICE, REGION 9, U. S. BUREAU OF PUBLIC ROADS. COLOR TRANSPARENCIES AT A SCALE OF ABOUT 1'6000 HAVE PROVED MOST EFFECTIVE IN THESE SURVEYS. THE USE OF AERIAL COLOR PHOTOGRAPHY FOR SUCH STUDIES IS STILL LIMITED, BUT IS LIKELY TO INCREASE WITH CONTINUING IMPROVEMENTS IN FILM AND LENS TECHNOLOGY, DECREASING COSTS, INCREASED EXPERIENCE IN PROCUREMENT AND PROCESSING BY PHOTOGRAMMETRIC AND PHOTOGRAPHIC FIRMS, AND AN AWARENESS BY POTENTIAL USERS OF ITS ADVANTAGES OVER CONVENTIONAL PHOTOGRAPHY. RECENT SIGNIFICANT TRENDS IN AERIAL COLOR FILMS INCLUDE AN INCREASE IN EMULSION SPEED, A WIDENING OF EXPOSURE LATITUDE, IMPROVEMENT OF COLOR REPRODUCTION, AND AN INCREASE IN RESOLUTION. ACCEPTABLE QUALITY COLOR PRINTS OFFERING SEVERAL ADVANTAGES OVER TRANSPARENCIES FOR OFFICE AND FIELD USE CAN NOW BE PRODUCED. THE USE OF COLOR PHOTOGRAPHS IN PHOTOGRAMMETRIC MAPPING INSTRUMENTS CAN BE EXPECTED IN THE FUTURE. FURTHER RESEARCH ON AERIAL COLOR PHOTOGRAPHY FOR MATERIALS SURVEYS IS NEEDED IN THE AREAS OF /A/ USE OF VARIOUS FILM- FILTER COMBINATIONS, /B/ DETERIORATION OF DYES IN COLOR FILM, /C/ USE OF SELECTED COLOR-VIEWING FILTERS AND SOURCES OF ILLUMINATION, /D/ QUANTITATIVE INTERPRETATION BY MEANS OF DENSITOMETERS, /E/ USE OF FALSE COLOR FILM, /F/ DETERMINING ACCEPTABLE LATITUDE OF EXPOSURE AND ITS EFFECT ON INTERPRETATION, AND /G/ PHOTOGRAPHIC LABORATORY MANIPULATION TO ENHANCE COLOR DIFFERENCES. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 1-9
  • Monograph Title: Color air photos, soil properties and tests
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00202544
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Mar 3 1994 12:00AM