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# Preprocessing COCO
### Download raw images and annotations
````shell
wget http://images.cocodataset.org/zips/train2017.zip
wget http://images.cocodataset.org/zips/val2017.zip
wget http://images.cocodataset.org/annotations/annotations_trainval2017.zip
unzip ./train2017.zip
unzip ./val2017.zip
unzip ./annotations_trainval2017.zip
cd pycocotools && make && cd ..
````
### Crop & Generate data info (~20 min)
````shell
#python par_crop.py -h
python par_crop.py --enable_mask --num_threads 24
python gen_json.py
````
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