Is there a baseline,when use mobilenet as the backbone for faster-rcnn or mask-rcnn?

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Instead of adding features inside detectron2,
you can implement many features by [extending detectron2](https://detectron2.readthedocs.io/tutorials/extend.html).
The [projects/](https://github.com/facebookresearch/detectron2/tree/main/projects/) directory contains many of such examples.

The issue contains only a feature-request template and a question about using MobileNet with Faster R-CNN or Mask R-CNN; it names no files, tests, or entry points. First clarify whether a concrete implementation is wanted, which models and expected baseline are in scope, and what evidence would count as done.

Written by the indexing model from the issue text.