Fig. 5From: Opening the black box: explainable deep-learning classification of wood microscopic image of endangered tree speciesFeature visualization results of Pterocarpus. A, B P. indicus in tangential section and cross section; C, D P. macrocarpus in tangential section and cross section; E, F P. soyauxii in tangential section and cross section; G, H P. tinctorius in tangential section and cross section. The yellow circles represent vessels that were not activated by the model. The red dashed circles represent axial parenchyma near the vessels were activated by the model. The white circle represents wood ray in tangential section were actvated by the modelBack to article page