source: ""
bbox: ""
gt: ""
batch_size: 32
bbox_mean: ""
bbox_std: ""
shuffle: true
select_overlap: 0.5

source: ""
bbox: ""
gt: ""
root: ""
batch_size: 32
bbox_mean: ""
bbox_std: ""
shuffle: true
select_overlap: 0.5

Add root option in pair_roi configuration sample file.
Add root option in pair_roi configuration sample file.
