kaizhong

### Describe the question you meet \[I want to migrate mgd from mmdet to mmseg ，I mitate the cwd but have almost no effect after migration\] ### Post related information...

### Describe the feature CIRKD: Cross-Image Relational Knowledge Distillation for Semantic Segmentation and implementations on Cityscapes, ADE20K, COCO-Stuff., Pascal VOC and CamVid. ### Motivation Ex1. It is inconvenient when use...