About reappearance model

[Xuyihaoby]

Hello！I was wondering whether the representation of the rotate box is same as the original model,when you reappear the model.And whether the representation has a large impact on the final results.

[jbwang1997]

The angle definition in OBBDetection is different from AerialDetection and S2ANet. I let the angle of the rotating box range in [-pi/2, pi/2] for the convenience of angle regression. And the angles are also counterclockwise to fit the roi_align_rotated.

The angle range doesn't have a large impact on results. But some operations like the projection of dx and dy can largely influence the final results. This repo makes a comparison of different representations.

[Xuyihaoby]

The angle definition in OBBDetection is different from AerialDetection and S2ANet. I let the angle of the rotating box range in [-pi/2, pi/2] for the convenience of angle regression. And the angles are also counterclockwise to fit the roi_align_rotated.

The angle range doesn't have a large impact on results. But some operations like the projection of dx and dy can largely influence the final results. This repo makes a comparison of different representations.

Thank you for answering the question!!!! The data of repo shows that projection is very important.

[Xuyihaoby]

Do you mind providing the log of training s2anet？