in scripts/utils.py [0:0]
def get_frm_mask(proposals, gt_bboxs):
# proposals: num_pps
# gt_bboxs: num_box
num_pps = proposals.shape[0]
num_box = gt_bboxs.shape[0]
return (np.tile(proposals.reshape(-1,1), (1,num_box)) != np.tile(gt_bboxs, (num_pps,1)))