Fig. 10.

Classification results of different froth images without feature selection (classification results of arbitrary froth image features (take E, Re as examples): Class a (froth images obtained at a reagent ratio of 1:3); Class b (froth images obtained at a reagent ratio of 2:3); Class c (froth images obtained at a reagent ratio of 0.5:3); Class d (froth images obtained at a reagent ratio of 1:4); Class e (froth images obtained at a reagent ratio of 1:2))