[SOLVED] Combine json files containing COCO person keypoint annotations

Combine json files containing COCO person keypoint annotations

I've annotated some images using the coco-annotator. I'd like to combine these annotations with the existing one ("person_keypoints_train2017.json" and "person_keypoints_val2017.json").

Has anyone ever managed to do so? If yes, how? (preferrably using python)

Solution

json vlaues can be accessed using the json module try reading both the files and hence decide what values to combine:

import json
from collections import OrderedDict
filename1 = "person_keypoints_train2017.json"
with open(filename1) as f:
    data_filename1 = json.load(f, object_pairs_hook=OrderedDict)
filename2 = "person_keypoints_val2017.json"
with open(filename1) as f:
    data_filename2 = json.load(f, object_pairs_hook=OrderedDict)

now you have two dictionaries, you can manipulate data. In order to save them to the file:

    with open(file_name, 'w') as outfile:
    json.dump(data, outfile, separators=(',', ':'))