Fig. 4From: PYM: a new, affordable, image-based method using a Raspberry Pi to phenotype plant leaf area in a wide diversity of environmentsPerformance of the PYM segmentation method with contrasted varieties of lettuce (light green in A or dark red in B and C). Comparison with Rosette Tracker [12]. a1–c1 VIS image. a2–c2 (VIS + NIR)BF image. a3–c3 Segmented image after Rosette Tracker procedure. a4–c4 Segmented image after PYM procedure. a5–c5 Error (%) made on plant leaf area using automated procedures relative to the reference area determined on manually contoured plant on original images. Panel a is a duplicate of Fig. 4 for comparison purposesBack to article page