把一个目录下的多个cocokepoints标签合并成一个
时间: 2023-12-13 16:05:44 浏览: 70
要将一个目录下的多个COCO Keypoints标签合并成一个,你需要执行以下步骤:
1. 创建一个空的COCO Keypoints标签对象。
```python
from pycocotools import mask as maskUtils
from pycocotools.coco import COCO
import numpy as np
# 创建一个空的COCO Keypoints标签对象
merged_annotations = {
"images": [],
"annotations": [],
"categories": []
}
```
2. 遍历目录中的每个COCO Keypoints标签文件,加载它们并将其合并到新的标签对象中。
```python
import os
# 目录路径
directory = 'path/to/annotations/directory'
# 加载每个COCO Keypoints标签文件并合并到新的标签对象中
for filename in os.listdir(directory):
if filename.endswith('.json'):
file_path = os.path.join(directory, filename)
coco = COCO(file_path)
# 合并images
merged_annotations['images'].extend(coco.dataset['images'])
# 合并annotations,并调整annotation的id以避免冲突
last_annotation_id = len(merged_annotations['annotations'])
annotations = coco.dataset['annotations']
for annotation in annotations:
annotation['id'] += last_annotation_id # 调整annotation的id
merged_annotations['annotations'].append(annotation)
# 合并categories,并调整category的id以避免冲突
last_category_id = len(merged_annotations['categories'])
categories = coco.dataset['categories']
for category in categories:
category['id'] += last_category_id # 调整category的id
merged_annotations['categories'].append(category)
```
3. 将合并后的标签保存到新的COCO Keypoints标签文件中。
```python
# 保存合并后的标签到新的COCO Keypoints标签文件
merged_file_path = 'path/to/merged_annotations.json'
with open(merged_file_path, 'w') as f:
json.dump(merged_annotations, f)
```
请将代码中的`'path/to/annotations/directory'`替换为实际的目录路径,该目录包含要合并的COCO Keypoints标签文件。同时,将`'path/to/merged_annotations.json'`替换为要保存合并后标签的新文件路径。
这样,你就可以将一个目录下的多个COCO Keypoints标签合并成一个新的标签文件。请确保已经安装了`pycocotools`库。
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