The capabilities of colour infrared film as a negative
Abstract
The use of color infrared (CIR) film as a negative for forest inventory is investigated. The testing of CIR and panchromatic coverage of the Boreal Forest Region and the Saint Lawrence Forest Region under various atmospheric haze conditions by the Ontario Center for Remote Sensing, Toronto, Canada is described. The calibration of the film speed, and the processing of the CIR film using the sensitometric methods of Todd and Zakia (1974) are examined. The printing of the film on black and white and panchromatic print papers and the comparing of the products are discussed. It is observed that the CIR processed as a negative provides a wider range of colors, better color saturation, and greater exposure latitude. It is concluded that the CIR film is less affected by the presence of atmospheric haze than traditional panchromatic photographs, and when processed on panchromatic print paper it produces a versatile multispectral photograph applicable to forest inventory.
- Publication:
-
Photogrammetria
- Pub Date:
- December 1985
- DOI:
- 10.1016/0031-8663(85)90011-0
- Bibcode:
- 1985Pg.....40..179Z
- Keywords:
-
- Aerial Photography;
- Color Infrared Photography;
- Data Acquisition;
- Photographic Film;
- Photographic Processing;
- Black And White Photography;
- Color Photography;
- Image Contrast;
- Remote Sensing;
- Instrumentation and Photography