Images that are obtained with Color Infrared (CIR) Photography can provide local officials, engineers and scientists with a tool to identify onsite treatment system (septic tank) failures. Color-infrared Aerial Surveys and Hyperspectral Sensors can record scenes of the earth surface using both visible and invisible sections of the Electromagnetic Spectrum. Near-infrared light is invisible to the naked eye, but adding to these images permits to see the earth surface in other than natural colors resulting in “color-infrared photography. Certain limitations do exist with CIR aerial surveys because the photos need to be recorded on a clear day, without atmospheric interference or a leaf canopy. CIR photography of failed systems can produce a false Signature and then the process needs to be verified with ground-truthing by the personnel. These photographic signatures of failed onsite treatment systems can be identified more accurately and less expensive with Hyperspectral Imaging System (HSI) such as the AVIRIS sensor and the image processed with The Environment Visualization Imaging (ENVI) software.
© 2005 Optical Society of AmericaPDF Article