The confidence of bbox deformable detr predicts is very slow

[GivanTsai]

Prerequisite

• I have searched the existing and past issues but cannot get the expected help.
• I have read the FAQ documentation but cannot get the expected help.
• The bug has not been fixed in the latest version.

💬 Describe the reimplementation questions

Deformable detr predicts num_queries bbox with confidence and corrdinates, however, the max score of boxes is always very slow, often below 0.4. How can I increase the score of bboxes?

Environment

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Expected results

No response

Additional information

No response

[jbwang1997]

Did you use the pre-trained model provided in mmdetection?

[ZwwWayne]

Because the detector uses Focal loss, it is common that the scores of boxes are low.