Digital Image Processing 121 Patterns and Pattern Classes Three types of iris flowers described by 2.5 △ Iris virginica two measurements 口 Iris versicolor o Iris setosa △△Δ△ △△ △△M△△ 2.0 △ △△ △△△△ △ BM△ 口口口 1.0 日日口 0.5 3 Petal length(cm)Digital Image Processing 12.1 Patterns and Pattern Classes Three types of iris flowers described by two measurements