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processing ignore boxes in atss assigner #3082

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merged 8 commits into from
Jul 9, 2020
Merged

processing ignore boxes in atss assigner #3082

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0ddca57
processing ignore boxes in atss assigner
rydenisbak Jun 19, 2020
b11b39b
formatting
rydenisbak Jun 19, 2020
54b8d07
flake8 correct
rydenisbak Jun 19, 2020
1195607
correct flake8 v2
rydenisbak Jun 19, 2020
fe923fd
frommatting via pycharm
Jun 19, 2020
73db6cb
OMG this is the last commit
rydenisbak Jun 19, 2020
50f5ccd
fix bug
rydenisbak Jun 19, 2020
fa8da53
format
yhcao6 Jul 8, 2020
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15 changes: 14 additions & 1 deletion mmdet/core/bbox/assigners/atss_assigner.py
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Original file line number Diff line number Diff line change
Expand Up @@ -20,9 +20,13 @@ class ATSSAssigner(BaseAssigner):
topk (float): number of bbox selected in each level
"""

def __init__(self, topk, iou_calculator=dict(type='BboxOverlaps2D')):
def __init__(self,
topk,
iou_calculator=dict(type='BboxOverlaps2D'),
ignore_iof_thr=-1):
self.topk = topk
self.iou_calculator = build_iou_calculator(iou_calculator)
self.ignore_iof_thr = ignore_iof_thr

# https://github.com/sfzhang15/ATSS/blob/master/atss_core/modeling/rpn/atss/loss.py

Expand Down Expand Up @@ -98,6 +102,15 @@ def assign(self,
distances = (bboxes_points[:, None, :] -
gt_points[None, :, :]).pow(2).sum(-1).sqrt()

if (self.ignore_iof_thr > 0 and gt_bboxes_ignore is not None
and gt_bboxes_ignore.numel() > 0 and bboxes.numel() > 0):
ignore_overlaps = self.iou_calculator(
bboxes, gt_bboxes_ignore, mode='iof')
ignore_max_overlaps, _ = ignore_overlaps.max(dim=1)
ignore_idxs = ignore_max_overlaps > self.ignore_iof_thr
distances[ignore_idxs, :] = INF
assigned_gt_inds[ignore_idxs] = -1

# Selecting candidates based on the center distance
candidate_idxs = []
start_idx = 0
Expand Down