把jason格式转为coco txt格式
时间: 2023-07-06 17:44:04 浏览: 49
可以使用Python脚本将JSON格式转换为COCO txt格式,以下是一个简单的示例脚本:
```python
import json
# 读取JSON文件
with open('annotations.json', 'r') as f:
data = json.load(f)
# 转换为COCO txt格式
coco_data = []
for item in data['annotations']:
filename = item['filename']
regions = item['regions']
labels = []
for region in regions:
labels.append(region['region_attributes']['label'])
coco_data.append({
'filename': filename,
'labels': labels
})
# 将结果写入txt文件
with open('coco_data.txt', 'w') as f:
for item in coco_data:
f.write(item['filename'] + '\t' + ','.join(item['labels']) + '\n')
```
在此示例中,我们假设JSON文件具有以下结构:
```json
{
"annotations": [
{
"filename": "image1.jpg",
"regions": [
{
"region_attributes": {
"label": "cat"
}
},
{
"region_attributes": {
"label": "dog"
}
}
]
},
{
"filename": "image2.jpg",
"regions": [
{
"region_attributes": {
"label": "bird"
}
}
]
}
]
}
```
输出的COCO txt格式将如下所示:
```
image1.jpg cat,dog
image2.jpg bird
```