Code is still coming, but it will have to wait a bit longer than I expected. Sorry for the inconvenience.
In the meantime, the guys at plumerai have re-implemented our work: Network architecture and Training code
And if you are interested in binary CNNs in general, we really recommend that you check larq.
@inproceedings{real2binICLR20,
title={Training binary neural networks with real-to-binary convolutions},
author={Brais Martinez and Jing Yang and Adrian Bulat and Georgios Tzimiropoulos},
booktitle={International Conference on Learning Representations},
year={2020}
}