Daniel Stanley Tan edited subsection_Measuring_the_Infestation_Level__.tex  about 8 years ago

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Lastly, the infestation level $I$ assigned to the fruit is measured by the ratio of the area of the disease $A_d$ to the area of the fruit $A_f$ divided by 2 (See Equation ). The area of disease and area of the fruit is estimated by number of infected pixels associated with the disease and the number of pixels of the cacao respectively. The adjustment factor $\frac{1}{2}$ is based on the reason that only one side of the cacao pod can be captured by an image.   $$ I = \frac{A_d}{(2 * A_f)} \frac{A_d}{2(A_f)}  × 100 (\%)$$ The infestation level can then be mapped to the severity index of Alvindia et al. \cite{alvindia2015revisiting}, or to a different index depending on its intended use.