Visualizing the Attention Masks

[jain-avi]

Hi,
I wanted to ask how to visualize the attention masks as given in Fig 1 in the paper? Does it involve using GRAD CAM? or is it directly the actual outputs of the mask? Also, given that the masks are of different sizes and the number of channels are more (usually 256, 512 or 1024), how do the authors visualize the attention masks then?
A code snippet would help highly.

[jpainam]

Hi! I also wish to know how he visualized the attention masks

[hfutzzw]

and the same question