This paper presents a method of forecasting the green leaves of rice and Pathumthani 1 variants with digital image processing techniques. By designing algorithms for image processing to extract the components of the leaves of the photos to analyze the color of the leaves in the average RGB color, and analyzed the correlation average of the three colors on the volume. the measurement of chlorophyll-mail with mail chlorophyll meter (SPAD-502) with linear regression analysis. It was found that the average color photos, leaves, red, green, blue is associated with the green leaves on the R2 = 95.8% and linear model derived from the analysis of the linear regression, the accuracy in predicting fat content. Phil Roe in 96.12% of tests predicting rice with green leaves with a different number 60.
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