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Great summary. I believe both models are available in Detectron if anyone wants to give them a go:

https://github.com/facebookresearch/Detectron

Yes for Mask-RCNN. For FCN, there is R-FCN.

Overall I'm really happy to work in a domain where people share their code and models in such an open way. I take issue with detectron in particular though, because a company the size of facebook in the year of 2018 has no excuse to publish a major software package in python 2. The oldest models they implement are from 2015 (excluding VGG16 which is so prolific it's available in literally every library as python 3) and caffe2 is quite a bit more recent than that. Like I said. No excuse...

The team behind Detectron have published an enormous amount of really good research, but the Detectron codebase struck me as "good research code" rather than something you'd ideally want in production.

Of course, I'm not criticising the fact that they publish those models, nor the models themselves. But even publishing arguably polished python2 code in 2018 is something I take issue with if it's not a legacy code base

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