The method for computing "feature responses"

[yimjae0]

In the Figure 6, how did you visualize or compute the feature responses?
If possible, can you provide the code for it?

[liuhui0401]

After the first stage, we got features with the dimension of [npoints, feature_dim]. For the second dimension, we took the maximum or average value as the response characteristic value for each point. Based on this, we conducted visualization.