In this work, there are three major types of rubber trees leaf diseases were selected for this study which are known as Corynespora, Bird’s Eye Spot and Collectotrichum and the se data were taken from the previous experiment. These samples were collected from the nursery at the Malaysian Rubber Board (MRB), Sungai Buloh, Selangor, Malaysia. These quatitative and qualitative information were acquired from the Region of Interest (ROI) of the diseases which is based on RGB pixel color indices by cropping the identified infected area as shown in Figure 3[2].