yolo格式怎么转xml
时间: 2023-09-09 09:08:14 浏览: 44
将YOLO格式转换为XML格式的过程如下:
1. 创建一个Python脚本,并导入所需的库,如cv2,os和xml.etree.ElementTree。
2. 打开YOLO格式的标签文件,并读取每个标签行。
3. 对于每个标签行,将其拆分为标签名称和标签坐标。
4. 计算出标签的左上角和右下角坐标,然后将它们转换为XML格式。
5. 将每个标签添加到XML文件中。
6. 保存XML文件。
下面是一个简单的示例代码片段,它可以将YOLO格式的标签文件转换为XML格式:
```python
import cv2
import os
import xml.etree.ElementTree as ET
def yolo_to_xml(yolo_file, output_dir):
# Open the YOLO format file and read each label line
with open(yolo_file) as f:
labels = f.readlines()
# Create the root XML element
root = ET.Element("annotation")
# Create the child elements and add them to the root element
filename = os.path.splitext(os.path.basename(yolo_file))[0] + ".jpg"
ET.SubElement(root, "filename").text = filename
size = ET.SubElement(root, "size")
ET.SubElement(size, "width").text = "416"
ET.SubElement(size, "height").text = "416"
ET.SubElement(size, "depth").text = "3"
# Loop over each label and add it to the XML file
for label in labels:
label_parts = label.strip().split()
label_name = label_parts[0]
x_center = float(label_parts[1])
y_center = float(label_parts[2])
width = float(label_parts[3])
height = float(label_parts[4])
left = int((x_center - width / 2) * 416)
top = int((y_center - height / 2) * 416)
right = int((x_center + width / 2) * 416)
bottom = int((y_center + height / 2) * 416)
object_element = ET.SubElement(root, "object")
ET.SubElement(object_element, "name").text = label_name
bbox = ET.SubElement(object_element, "bndbox")
ET.SubElement(bbox, "xmin").text = str(left)
ET.SubElement(bbox, "ymin").text = str(top)
ET.SubElement(bbox, "xmax").text = str(right)
ET.SubElement(bbox, "ymax").text = str(bottom)
# Write the XML file to disk
xml_file = os.path.join(output_dir, os.path.splitext(os.path.basename(yolo_file))[0] + ".xml")
tree = ET.ElementTree(root)
tree.write(xml_file)
```
此代码将读取YOLO格式的标签文件(yolo_file),将其转换为XML格式,然后将输出文件保存到指定目录(output_dir)中。请注意,此代码假设YOLO格式的标签文件中的坐标是相对于图像宽度和高度的百分比,因此需要将它们转换为像素坐标。