References: https://github.com/matterport/Mask_RCNN https://medium.com/@umdfirecoml/training-a-mask-r-cnn-model-using-the-nucleus-data-bcb5fdbc0181 https://towardsdatascience.com/train-mask-rcnn-net-for-object-detection-in-60-lines-of-code-9b6bbff292c3
