AERIAL PHOTOGRAPHS IN FORESTRY: 3 FILMS, FILTERS, AND SEASON OF PHOTOGRAPHY

THE CHOICE OF FILM AND FILTER COMBINATIONS IN FORESTRY WORK IS DISCUSSED. THE FORESTRY VALUE OF AERIAL PHOTOGRAPHY IS LIMITED BY THE LACK OF TONAL CONTRAST BETWEEN COMMERCIAL SPECIES AND FOREST TYPES. HOWEVER, MARKED CONTRAST CAN BE OBTAINED BY THE CHOICE OF THE PROPER FILM AND FILTER. THE SPECTRAL SENSITIBITY OF THE FILM MUST BE MATCHED TO THE SPECTRAL REFLECTANCE OF THE VEGETATION. THE SPECTRAL REFLECTANCE OF MANY TYPES OF VEGETATION HAS BEEN DETERMINED. THE SPECTRAL REFLECTANCE OF TREE LEAVES DEPENDENT UPON THE STRUCTURE OF THE TREE IS ANOTHER FACTOR. ORTHOCHROMATIC, PANCHROMATIC, INFRARED, AND COLOR FILM ARE DESCRIBED WITH COMPATIBLE FILTERS. THE IMPORTANCE OF SEASON IN FOREST PHOTOGRAPHY IS ANALYZED.

  • Supplemental Notes:
    • pp 22-43, 3 FIG, 6 PHOT, 15 REF
  • Corporate Authors:

    Ronald Press Company, New York

    ,    
  • Authors:
    • Spurr, S H
  • Publication Date: 1948

Subject/Index Terms

Filing Info

  • Accession Number: 00202669
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 18 1994 12:00AM