Reading images from COCO #python

pycoco.py

import zipfile
import numpy as np
from PIL import Image
from pycocotools import coco

# coco releases annotations and images in zip files
# you can keep the images in the zip archives because they allow random access
# however the annotations should be extracted and processed as is

c = coco.COCO("./annotations/instances_train2017.json")

filename = None

for img_info in c.imgs.values():
    print(img_info['id'])
    print(img_info['file_name'])
    print(img_info['height'])
    print(img_info['width'])
    filename = img_info['file_name']
    break

with zipfile.ZipFile('./train2017.zip') as train2017:
    with train2017.open('train2017/{}'.format(filename)) as f:
        image = Image.open(f)
        image = np.asarray(image, dtype=np.uint8)

print(image)