Ground Cover Fraction from Green and Red Channels of a Digital Camera

Ground cover fraction (GCF) has been widely used, as it is related crop growth and radiation capture. Digital analysis consists of separating plant pixels from soil pixels based on color values. GCF is considered a precise estimator of plant growth and has been shown to be closely related with radiation capture and photosynthesis in controlled environments. The purpose of this research to estimate GCF of cotton cultivars using and red channels of a visible camera, and comparsion among two methods to estimate GCF.