Detectron2 is an open-source modular computer vision framework built on top of PyTorch. It's developed by the Facebook AI Research (FAIR) team and serves as a successor to the original Detectron platform. Detectron2 is designed specifically for research and development purposes in the domain of object detection and segmentation. This is the official tutorial of detectron2. Here, we will go through some basics usage of detectron2, including the following: Run inference on images or videos, with an existing detectron2 model Train a detectron2 model on a new dataset