wko-projekt/coco_annotation.py

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import json
from collections import defaultdict
name_box_id = defaultdict(list)
id_name = dict()
f = open(
"mscoco2017/annotations/instances_train2017.json",
encoding='utf-8')
data = json.load(f)
annotations = data['annotations']
for ant in annotations:
id = ant['image_id']
name = 'mscoco2017/train2017/%012d.jpg' % id
cat = ant['category_id']
if cat >= 1 and cat <= 11:
cat = cat - 1
elif cat >= 13 and cat <= 25:
cat = cat - 2
elif cat >= 27 and cat <= 28:
cat = cat - 3
elif cat >= 31 and cat <= 44:
cat = cat - 5
elif cat >= 46 and cat <= 65:
cat = cat - 6
elif cat == 67:
cat = cat - 7
elif cat == 70:
cat = cat - 9
elif cat >= 72 and cat <= 82:
cat = cat - 10
elif cat >= 84 and cat <= 90:
cat = cat - 11
name_box_id[name].append([ant['bbox'], cat])
f = open('train.txt', 'w')
for key in name_box_id.keys():
f.write(key)
box_infos = name_box_id[key]
for info in box_infos:
x_min = int(info[0][0])
y_min = int(info[0][1])
x_max = x_min + int(info[0][2])
y_max = y_min + int(info[0][3])
box_info = " %d,%d,%d,%d,%d" % (
x_min, y_min, x_max, y_max, int(info[1]))
f.write(box_info)
f.write('\n')
f.close()