Glossary for Geospatial Science

CIR image:� Color-infrared image.� Color-infrared images may be collected by an electronic scanner or a camera that uses special film with sensitivity from green through infrared.� The photographic infrared radiation just beyond the range of human vision is then displayed as red.� Normal red from the scene becomes green, and green becomes blue.� Normal blue in the scene is filtered out and not recorded.� CIR images are used to show the vigor of plant life.� Healthy vegetation appears red, while distressed or damaged vegetation may look pink, tan, or yellow.� (See also: color-infrared image)