A digital method for rapidly assessing the degree of damage caused by diseases and insect pests in alfalfa
A technology of pests and diseases, alfalfa, applied in the field of digital fine grass and agriculture, to achieve the effect of preventing code tampering and leakage, easy operation, and reducing geometric deformation
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[0040] S1. Analyze the focus area and non-focus area of the alfalfa leaf, summarize the common disease degree and its RGB color component rule, and construct the color decision tree component system of the leaf focus area and non-focus area accordingly; figure 1 shown.
[0041] S2, calculating the leaf disease rate;
[0042] S21. Calculate the total length of H rows and the width of L columns in the whole picture, and take one pixel unit as a row or column, then find the Hxth row, Lxth column, Hth row and Lth column, and calculate these two rows and two columns respectively The average value of the three components of , namely avgR, avgG, avgB, the three components refer to RGB;
[0043] S22, the difference between the three components of each pixel of the picture and the four average values of the corresponding components is then compared with the average value, as long as one of the ratios is less than 0.15 (assuming that x is a certain pixel point), this pixel point wi...
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