Densitometry on color and color IR imagery
Abstract
Basic concepts of color densitometry and film calibration procedures are reviewed with special emphasis on the specific application to the Remote Sensing investigator. The differences between, and the instrumentation to measure the spectral, broad band, specular, diffuse, integral and analytical densities are discussed. An explanation of equivalent neutral density and methods of determining this type of density are presented. Methodologies of using analytical densities for the Remote Sensing community are detailed. The use of analytical densities in the construction of characteristic curves are discussed. Comments are made on reasons for the use of analytical densities in the analysis of film imagery and on proper application of the exposure values derived from the characteristic curves.
- Publication:
-
American Society of Photogrammetry, 43rd Annual Meeting
- Pub Date:
- 1977
- Bibcode:
- 1977aspg.meet..301S
- Keywords:
-
- Color Photography;
- Densitometers;
- Infrared Imagery;
- Photogrammetry;
- Photographic Film;
- Remote Sensors;
- Calibrating;
- Dyes;
- Energy Distribution;
- Optical Thickness;
- Instrumentation and Photography