Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The visualization of the trained CNN. The first column is the original topographic image. The second column is the pixel-wise discriminative features, and it can outline the gradient difference of the topographic maps clearly. The third column is the class-discriminative heat map visualization method, and it reveals that the most significant area in the topographic images lies in the area of the greatest gradient difference.
