Miao Zheng

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as title

## Motivation Support `MMFlowInferencer` for providing an easy and clean interface for single or multiple images inferencing. Ref: https://github.com/open-mmlab/mmengine/pull/773 https://github.com/open-mmlab/mmocr/pull/1608 ## Modification - mmflow/apis/mmseg_inferencer.py - mmflow/visualization/local_visualizer.py - demo/image_demo_with_inferencer.py

Support to record validation loss

3

**Describe the feature** **Motivation** Now, val_loop cannot return the loss, and it is inconvenient when users would like to record and monitor the validation loss. **Related resources** https://github.com/open-mmlab/mmsegmentation/pull/1494

[Refactor] Modify model ouput when test or validation

1

Thanks for your contribution and we appreciate it a lot. The following instructions would make your pull request more healthy and more easily get feedback. If you do not understand...