Code in the kitti_dataset_mm.py "def generate_prediction_dicts"?

[weilli]

Sorry to bother you.
I still can't figure it out that why "pred_dict['bbox'][height_mask, 3] +=2"? Are there any details I missed?
Have a nice day!

line 315 to 318 in kitti_dataset_mm.py:
pred_dict['bbox'] = pred_boxes_img
height = pred_dict['bbox'][:, 3] - pred_dict['bbox'][:, 1]
height_mask = height<25
pred_dict['bbox'][height_mask, 3] +=2

[hailanyi]

Just to keep more objects during evaluation, as the KITTI filters objects of height<25.