Why do pad_to_bounding_box in ram.py?

[igo312]

As the title said, I found there is a tf.image.pad_to_bounding_box to get a zero padding.However I did not found the process in the paper. What's that mean?Actually, I also want to know the meaning of max_radius
Thank you.

[qihongl]

Thanks for the question!

Hmmm... I don't remember the detail, but I think zero-padding makes sense: We should allow RAM to look at the corner of the image. And max radius is probably the size of the glimpse.

[jlindsey15]

To clarify further -- the glimpses are taken at three separate spatial scales ("zoom" levels), with radii separated by factors of 2. Max radius refers to the largest of these.

[igo312]

@jlindsey15 the function of the max_radius is just to be input into the pad_to_bounding_box,In my mind it not actually check the scales's shape.

And I don't know why do that,It seems we have already got the translated image after convertTranslated().

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Say a digression， do anyone know the cnn network can get the information about location? I think cnn only can learn the content about images.

I was 'hold on' after I ask the question in the stackoverflow :(