What is the Bounding box？

[fanghao123-qw]

I finished reading this paper . the paper said we only require a loose bounding box around the object to model background, But the author didn't explain it in detail. and i have some questions
1.How we define the bounding box，what is it used for？
2.what should i do to get the bounding box if i wanna train my own dataset?

i‘m looking forward to your reply。

[Yuheng-Li]

1, bounding boxes are used in the background stage such that the background discriminator can only see background region.
2, If you dataset does not come with box annotations, then you can use a pretrained detector to get bounding boxes.

[fanghao123-qw]

I am going to detect the boundary. What is the four parameters specified in the paper? like Upper left corner or sth else？

[Yuheng-Li]

Please follow the bounding box format in the CUB dataset http://www.vision.caltech.edu/visipedia/CUB-200-2011.html