fix a bug in Freeanchor when no gt #3176
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yhcao6
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mike112223
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liuhuiCNN
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May 21, 2021
* add_ssd_config_demo
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fix two bug of
freeanchorwhen no gt bboxes in images.1
When a single image no gt,
mmdetection/mmdet/models/dense_heads/free_anchor_retina_head.py
Line 112 in 84fbb2c
max operation would case error,
2
when no any gt in a batch, the regression subnet has no grad after backward, the code would block.