Fig. 7From: Applying spectral fractal dimension index to predict the SPAD value of rice leaves under bacterial blight disease stressMean hyperspectral curves of ROI from a single leave under six disease levels. For illustrating the changes of the hyperspectral reflectance, we monitored the reflectance of a single leaf after infection (when the severity is Level 0). The severity of the bacterial blight disease develops with time, until it reaches to Level 5Back to article page