Error while using sequence about dataaugmentationforobjectdetection

[vavassoriluca]

I think the error is due to the fact that previous transformations have produced an image that as no bounding boxes in it (the object is now out of the image or truncated at the point the bbox has been deleted). So the get_corners function returns an empty array and in the rotate_box function there is no check for an empty set of bboxes.

A solution I found avoiding to edit the code is to put RandomRotate as the first transformation in the sequence.