To automatically detect the disease and the insect pest through the scar characteristics on the fruit pericarp caused by the relative disease and insect, the multi-fractal analysis is adopted. First ＂a trous＂ algorithm is used to detect the local wavelet modulus maxima of fruit gray-scale fruit image. Then the maxima, with probabilistic implication semantic analysis method, is screened to generate the periphery points of the scar. Finally, the height and width of multi-fractal Spectra of periphery points are chosen as feature values of the sc...
