Yolov3标注文件转换成Dlib标注文件

#!/usr/bin/python
# -*- coding: utf-8 -*-
import xml.etree.ElementTree as ET
import os
import glob
from PIL import Image

LBAEL_ROOT = "E:/Python_WORKSPACE/Other_Code/xml文件解析/YoloLabels2dlibXML/"
src_path=LBAEL_ROOT+"labels"
pic_path=LBAEL_ROOT+"JPEGImages"
dst_path=LBAEL_ROOT+"dlibXML"
classes = ["trunk", "bus", "car", "mbc", "mbc_trunk","special"]

#xml格式美化
def prettyXml(element, indent, newline, level=0):  # elemnt为传进来的Elment类，参数indent用于缩进，newline用于换行
    if element:  # 判断element是否有子元素
        if element.text == None:  # 如果element的text没有内容
            element.text = newline + indent * (level + 1)
        else:
            element.text = newline + indent * (level + 1) + element.text.strip() + newline + indent * (level + 1)
            # else:  # 此处两行如果把注释去掉，Element的text也会另起一行
        # element.text = newline + indent * (level + 1) + element.text.strip() + newline + indent * level
    temp = list(element)  # 将elemnt转成list
    for subelement in temp:
        if temp.index(subelement) < (len(temp) - 1):  # 如果不是list的最后一个元素，说明下一个行是同级别元素的起始，缩进应一致
            subelement.tail = newline + indent * (level + 1)
        else:  # 如果是list的最后一个元素， 说明下一行是母元素的结束，缩进应该少一个
            subelement.tail = newline + indent * level
        prettyXml(subelement, indent, newline, level=level + 1)  # 对子元素进行递归操作



#将yolov3的训练标签label中的多个.txt文件转换成dlib训练标签
def yoloLabels2xml(src_path,dst_path):
    """解析yolo的多个txt标签，合并成一个dlib的xml标签文件
    yolo的txt文件内容格式为2 0.192969 0.512500 0.167187 0.166667
    dlib的xml格式为：
    <images>
      <image file="1_1960.jpg">
        <box height="112" left="949" top="502" width="121"><label>smoking</label></box>
      </image>
      <image file="1_1970.jpg">
        <box height="110" left="939" top="508" width="118"><label>smoking</label></box>
      </image>
      </images>
    添加到一个.XML文件中，并写入磁盘即可
  """
    # 创建root element
    dataset_train = ET.Element("dataset")
    # 直接通过SubElement类为root element添加多个子元素
    name0 = ET.SubElement(dataset_train, "name")
    images0 = ET.SubElement(dataset_train, "images")
    name0.text = "yolo2dlib vehicle dataset"
    # 以指定的root element创建一个ElementTree实例
    datasetTreetrain = ET.ElementTree(element=dataset_train)

    # 创建root element
    dataset_test= ET.Element("dataset")
    # 直接通过SubElement类为root element添加多个子元素
    name1 = ET.SubElement(dataset_test, "name")
    images1 = ET.SubElement(dataset_test, "images")
    name1.text = "yolo2dlib vehicle dataset"
    # 以指定的root element创建一个ElementTree实例
    datasetTreetest = ET.ElementTree(element=dataset_test)

    YoloTxtList=glob.glob(src_path+"/*")
    idx=0
    for yolotxt in YoloTxtList:
        pictxtname=yolotxt.split("\\")[-1]
        picame=pictxtname.replace(".txt",".jpg")
        img = Image.open(pic_path+"/"+picame)
        w=img.size[0]
        h=img.size[1]
        with open(yolotxt) as file:
            image = ET.Element("image", file=picame)
            yoloLabelsLines=file.readlines()
            for yoloLabelLine in yoloLabelsLines:
                 yoloLabelLine.rstrip()
                 labelLine=yoloLabelLine.split(" ")
                 cls_id=labelLine[0]
                 x1=labelLine[1]
                 y1=labelLine[2]
                 w1=labelLine[3]
                 h1=labelLine[4]
                 t=1.0/2*(2*(h*float(y1)+1)-float(h1)*h)
                 l=1.0/2*(2*(w*float(x1)+1)-float(w1)*w)
                 box = ET.Element("box", top=str(int(t)),left=str(int(l)),width=str(int(int(w)*float(w1))),height=str(int(int(h)*float(h1))))
                 image.append(box)
                 label = ET.SubElement(box, "label")
                 label.text = classes[int(cls_id)]
            if idx > len(YoloTxtList) * 0.9:
                images1.append(image)
            else:
                images0.append(image)
        idx+=1
    prettyXml(dataset_train, '\t', '\n')  # 执行美化方法
    prettyXml(dataset_test, '\t', '\n')  # 执行美化方法
    datasetTreetrain.write(dst_path + "/training.xml", encoding="utf-8", xml_declaration=True)
    datasetTreetest.write(dst_path + "/testing.xml", encoding="utf-8", xml_declaration=True)


if __name__ == "__main__":
    yoloLabels2xml(src_path, dst_path)

参考网址

【1】python xml格式美化
【2】Python学习-将list列表写入文件并读取方法汇总
【3】python中list与string的转换