Use of satellite imagery to radiometrically calibrate digital airborne multispectral imagery

Stephan Maas, Jessica Torrion, Sepalika Rajapakse, Wenxuan Guo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Detailed spatial and temporal assessment of agricultural fields is crucial in site specific management of agricultural crops. Satellite imagery is limited in its application to many site-specific applications due to its typically coarse spatial resolution. Airborne imaging systems are capable of acquiring remote sensing data with spatial resolutions that satisfy the requirements for site specific crop management. Unlike satellite imagery, the radiometric characteristics of airborne imagery are usually not known. Thus, it is difficult to perform temporal analysis using airborne imagery since it is typically not known if the radiometric characteristics of the imagery have changed between acquisitions. This document describes a procedure based on histogram matching to calibrate aerial imagery to a standard radiometric level established by satellite imagery acquired near the time of the airborne image acquisition. Normalized Landsat TM and ETM+ imagery were used as reference images. The technique was tested for two dates during the cotton growing season. Two techniques of histogram matching were compared: matching histograms by automatic histogram matching in ENVI, and matching histograms based on the ratio of the pixel distribution means. Automatic histogram matching produced better results, since it not only translated the histogram distributions but also balanced the gray values with respect to the reference image. Histogram matching of aerial photos is a promising technique for calibrating multi-temporal remote sensing.

Original languageEnglish
Title of host publicationAmerican Society for Photogrammetry and Remote Sensing - 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005
Pages388-396
Number of pages9
StatePublished - 2006
Event20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005 - Weslaco, TX, United States
Duration: Oct 4 2005Oct 5 2005

Publication series

NameAmerican Society for Photogrammetry and Remote Sensing - 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005

Conference

Conference20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005
CountryUnited States
CityWeslaco, TX
Period10/4/0510/5/05

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    Maas, S., Torrion, J., Rajapakse, S., & Guo, W. (2006). Use of satellite imagery to radiometrically calibrate digital airborne multispectral imagery. In American Society for Photogrammetry and Remote Sensing - 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005 (pp. 388-396). (American Society for Photogrammetry and Remote Sensing - 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005).