Fig. 1. Effect drawing of image preprocessing

Fig. 2. Images display of drone image dataset

Fig. 3. Diagram sketch of Dense Block

Fig. 4. Structure diagram of TL-DenseNet-121

Fig. 5. Different attention mechanism modules. (a) SE Block; (b) CA Block

Fig. 6. Dense convolutional network incorporating different number of SE Blocks in different locations. (a) TL-SE1-DenseNet-121; (b) TL-SE4-DenseNet-121

Fig. 7. Dense convolutional network incorporating different number of CA Blocks in different locations. (a) TL-CA1-DenseNet-121; (b) TL-CA4-DenseNet-121

Fig. 8. Experimental scene pictures

Fig. 9. Initial training results of TL-DenseNet-121

Fig. 10. Complete training results of TL-DenseNet-121

Fig. 11. Training results of DenseNet-121

Fig. 12. Complete training results of TL-CA4-DenseNet-121

Fig. 13. Comparison curves of various networks. (a) Network comparison curves introduced by SE Block; (b) Network comparison curves introduced by CA Block

Fig. 14. Comparison curves of various models