Fig. 3

Images shown are the original image (a) and segmented images based on seven different vegetation indices (b–h), ExR, ExR –ExB, NDI2, NDI3, NDI2*a, NDI3*a, NDI3*V. Segmentation was performed via automated thresholding based on the image row-means (μRow) method. For fine display only a region-of-interest (ROI) is presented