NOTE: This project is no longer maintained and may not compatible with the newest pytorch (after 0.4.0). This is a PyTorch implementation of YOLOv2. This project is mainly based on darkflow and darknet. I used a Cython extension for postprocessing and multiprocessing.Pool for image preprocessing. Testing an image in VOC2007 costs about 13~20ms. For details about YOLO and YOLOv2 please refer to the