Some Questions About Grad-CAM Visualization

[Romancezyf]

Hello, I would like to ask you some questions about the problems I encountered during visualization. I hope you can give me some answers. Thank you very much!

When I visualized my own network, I found that the visualization results were very poor, even though the quantitative indicators were excellent. The visualization results were generally rectangular, which is unreasonable. I am looking forward to your reply.