Fig. 1. Quantifying turfgrass color in the hue, saturation, and brightness (HSB) color space. (A) The hue is measured on a continuous scale from 0 to 360°. Turfgrass hues are typically between 70° and 110°. (B) For a specific turfgrass hue, here 90°, the saturation and brightness levels affect how dark green the color appears.

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