Fig. 3From: From visual estimates to fully automated sensor-based measurements of plant disease severity: status and challenges for improving accuracySegmentation steps during image analysis. An image of a a pecan leaflet with symptoms of scab (caused by Venturia effusa), b the same image with the whole leaf segmented from the background, and c the leaf with only the diseased areas segmented out. Diseased area on this leaflet is 30.14%Back to article page