OCRopus3 is being replaced by OCRopus4, which is a rewrite using PyTorch 1.7; release should be soonish.
Please check github.com/tmbdev/ocropus for updates.
This is a metaproject that collects all the modules/components of the PyTorch-based OCRopus3 OCR system.
To install:
git clone https://github.com/NVlabs/ocropus3 --recursive
cd ocropus3
./install