How to make the "Visualization of attention maps for the attention-based method"?

Question

I use this site first time. Please understand that my English is not good.

My study is zero-shot learning to recognize images.

My question is how to make Visualization of attention maps for the attention-based method.

enter image description here

[refer TransZero: Attribute-Guided Transformer for Zero-Shot Learning]

I read many papers(zero-shot learning) and I want to try visualize image(example picture) [choose world and visualize image]

I try to search google, and github, but failed.

So can you help me?