coco/tools.py

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2019-12-16 11:19:48 +00:00
import pycocotools.coco
import argparse
import logging
import os
import pprint
import sqlite3
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("coco")
argParser = argparse.ArgumentParser(description='Create shape SVG\'s')
argParser.add_argument(
'--annotations',
type=str,
default='../../datasets/COCO/annotations/instances_val2017.json'
)
argParser.add_argument(
'--categories',
action='store_true',
help='Show categories'
)
argParser.add_argument(
'--propagate',
type=str,
metavar='DATABASE',
help='Store data in sqlite db'
)
args = argParser.parse_args()
logger.info(f"Load {args.annotations}")
coco = pycocotools.coco.COCO(args.annotations)
if args.categories:
cats = {}
for id, cat in coco.cats.items():
if cat['supercategory'] not in cats:
cats[cat['supercategory']] = []
cats[cat['supercategory']].append(cat)
# pp = pprint.PrettyPrinter(indent=4)
pprint.pprint(cats, sort_dicts=False)
if args.propagate:
if not os.path.exists(args.propagate):
con = sqlite3.connect(args.propagate)
cur = con.cursor()
with open('coco.sql', 'r') as fp:
cur.executescript(fp.read())
con.close()
con = sqlite3.connect(args.propagate)
logger.info("Create categories")
cur = con.cursor()
cur.executemany('INSERT OR IGNORE INTO categories(id, supercategory, name) VALUES (:id, :supercategory, :name)', coco.cats.values())
con.commit()
logger.info("Images...")
cur.executemany('''
INSERT OR IGNORE INTO images(id, flickr_url, coco_url, width, height, date_captured)
VALUES (:id, :flickr_url, :coco_url, :width, :height, :date_captured)
''', coco.imgs.values())
con.commit()
logger.info("Annotations...")
def annotation_generator():
for c in coco.anns.values():
ann = c.copy()
ann['bbox_top'] = ann['bbox'][1]
ann['bbox_left'] = ann['bbox'][0]
ann['bbox_width'] = ann['bbox'][2]
ann['bbox_height'] = ann['bbox'][3]
yield ann
cur.executemany('''
INSERT OR IGNORE INTO annotations(id, image_id, category_id, iscrowd, area, bbox_top, bbox_left, bbox_width, bbox_height)
VALUES (:id, :image_id, :category_id, :iscrowd, :area, :bbox_top, :bbox_left, :bbox_width, :bbox_height)
''', annotation_generator())
con.commit()
logger.info("Segments...")
def segment_generator():
for ann in coco.anns.values():
for i, seg in enumerate(ann['segmentation']):
yield {
'id': ann['id']*10 + i, # create a uniqe segment id, supports max 10 segments per annotation
'annotation_id': ann['id'],
'points': str(seg)[1:-1],
}
cur.executemany('''
INSERT OR IGNORE INTO segments(id, annotation_id, points)
VALUES (:id, :annotation_id, :points)
''', segment_generator())
con.commit()
logger.info("Done...")
# for id, cat in coco.cats.items():
# cur = con.cursor()
# cur.execute