LANDSAT Multispectral Scanner (MSS) data covering a three-county area in northern Illinois were classified using computer-aided techniques as corn, soybeans, or "other." Recognition of test fields was 80% accurate. County estimates of the area of corn and soybeans agreed closely with those made by the USDA. Results of the use of a priori information in classification, techniques to produce unbiased area estimates, and the use of temporal and spatial features for classification are discussed. The extendability, variability, and size of training sets, wavelength band selection, and spectral characteristics of crops were also investigated.
Bibliographical noteFunding Information:
This paper reports on work sponsored by the National Aeronautics and Space Administration, Goddard Space Flight Center, Contract NAS5-21773. Journal Paper No. 7032, Purdue University Agricultural Experiment Station.