Crop Identification in a Parkland Environment Using Aerial Photography

Abstract

SUMMARYThe estimation of crop production using remote sensing techniques first requires a correct identification of the crops found in a given area. In Western Canada, the identification of field crops is hampered by the occurrence of confusion crops such as spring grains. These follow crop calendars and/or possess spectral signatures similar to each other. The results of an interpretation test using color and color infra-red photography show a higher percent correct identification of spring grains with the color photography. This is attributed in part to the differences in visible colors often noted in the field during the vegetative period between darker green wheat crops and lighter green oat and barley crops. A higher percent correct identification of fallow fields was attained with the color infra-red photography. Relatively high percent commission errors were made for grain and hay crops with both types of photography.