目标检测标签文件txt转成xml

最近在用ppyolo训练好的模型对新采集的数据进行标记;再人工微调;减少从头打标签的时间;但是推理保存的结果都是txt格式的;想要在labelimg中可视化;那就需要将txt转换成xml。

以下代码即可完成这一功能。

# -*- coding:UTF-8 -*-
import os
import cv2

def txt_to_xml(classname_path, txt_path, img_path, xml_path):
    # 1.读取txt文件中的标签类别
    with open(classname_path, ;r;) as f:
        classes = f.readlines()  # list, 每个类别末尾都有;
;
        classes = [cls.strip(;
;) for cls in classes]

    # 2.找到txt标签文件夹
    files = os.listdir(txt_path)
    # 用于存储 ;老图;
    pre_img_name = ;;
    # 3.遍历文件夹
    for i, name in enumerate(files):
        # mac系统中文件夹里有该文件;默认的也删不掉;那就直接pass
        if name == ;.DS_Store;:
            continue
        print(name)
        # 4.打开txt
        txtFile = open(txt_path ; name)
        # 读取所有内容
        txtList = txtFile.readlines()
        # 读取图片名称
        img_name = name.split(;.;)[0]
        pic = cv2.imread(img_path ; img_name ; ;.jpg;)
        # 获取图像大小信息
        Pheight, Pwidth, Pdepth = pic.shape
        # 5.遍历txt文件中每行内容
        for row in txtList:
            # 按; ;分割txt的一行的内容
            oneline = row.strip().split(; ;)
            # 遇到的是一张新图片
            if img_name != pre_img_name:
                # 6.新建xml文件
                xml_file = open((xml_path ; img_name ; ;.xml;), ;w;)
                xml_file.write(;<annotation>
;)
                xml_file.write(;    <folder>billiards</folder>
;)
                xml_file.write(;    <filename>; ; img_name ; ;.jpg; ; ;</filename>
;)
                xml_file.write(;    <path>E:/Images</path>
;)
                xml_file.write(;    <source>
;)
                xml_file.write(;        <database>orgaquant</database>
;)
                xml_file.write(;    </source>
;)
                xml_file.write(;    <size>
;)
                xml_file.write(;        <width>; ; str(Pwidth) ; ;</width>
;)
                xml_file.write(;        <height>; ; str(Pheight) ; ;</height>
;)
                xml_file.write(;        <depth>; ; str(Pdepth) ; ;</depth>
;)
                xml_file.write(;    </size>
;)
                xml_file.write(;    <object>
;)
                xml_file.write(;        <name>; ; classes[int(oneline[0])] ; ;</name>
;)
                xml_file.write(;        <difficult>; ; str(0) ; ;</difficult>
;)
                xml_file.write(;        <bndbox>
;)
                xml_file.write(;            <xmin>; ; str(
                    int(((float(oneline[1])) * Pwidth ; 1) - (float(oneline[3])) * 0.5 * Pwidth)) ; ;</xmin>
;)
                xml_file.write(;            <ymin>; ; str(
                    int(((float(oneline[2])) * Pheight ; 1) - (float(oneline[4])) * 0.5 * Pheight)) ; ;</ymin>
;)
                xml_file.write(;            <xmax>; ; str(
                    int(((float(oneline[1])) * Pwidth ; 1) ; (float(oneline[3])) * 0.5 * Pwidth)) ; ;</xmax>
;)
                xml_file.write(;            <ymax>; ; str(
                    int(((float(oneline[2])) * Pheight ; 1) ; (float(oneline[4])) * 0.5 * Pheight)) ; ;</ymax>
;)
                xml_file.write(;        </bndbox>
;)
                xml_file.write(;    </object>
;)
                xml_file.close()
                pre_img_name = img_name  # 将其设为;老;图
            else:  # 不是新图而是;老图;
                # 7.同一张图片;只需要追加写入object
                xml_file = open((xml_path ; img_name ; ;.xml;), ;a;)
                xml_file.write(;    <object>
;)
                xml_file.write(;        <name>; ; classes[int(oneline[0])] ; ;</name>
;)
                xml_file.write(;        <difficult>; ; str(0) ; ;</difficult>
;)
                ;;;  按需添加这里和上面
                xml_file.write(;        <pose>Unspecified</pose>
;)
                xml_file.write(;        <truncated>0</truncated>
;)
                xml_file.write(;        <difficult>0</difficult>
;)
                ;;;
                xml_file.write(;        <bndbox>
;)
                xml_file.write(;            <xmin>; ; str(
                    int(((float(oneline[1])) * Pwidth ; 1) - (float(oneline[3])) * 0.5 * Pwidth)) ; ;</xmin>
;)
                xml_file.write(;            <ymin>; ; str(
                    int(((float(oneline[2])) * Pheight ; 1) - (float(oneline[4])) * 0.5 * Pheight)) ; ;</ymin>
;)
                xml_file.write(;            <xmax>; ; str(
                    int(((float(oneline[1])) * Pwidth ; 1) ; (float(oneline[3])) * 0.5 * Pwidth)) ; ;</xmax>
;)
                xml_file.write(;            <ymax>; ; str(
                    int(((float(oneline[2])) * Pheight ; 1) ; (float(oneline[4])) * 0.5 * Pheight)) ; ;</ymax>
;)
                xml_file.write(;        </bndbox>
;)
                xml_file.write(;    </object>
;)
                xml_file.close()

        # 8.读完txt文件最后写入</annotation>
        xml_file1 = open((xml_path ; pre_img_name ; ;.xml;), ;a;)
        xml_file1.write(;</annotation>;)
        xml_file1.close()
    print(;Done !;)

if __name__== ;__main__;:
    classname_path = ;/Users/h1y/Documents/mac2server/billiards/billiards_classes.txt;  # names文件的路径
    # 修改成自己的文件夹 注意文件夹最后要加上/
    txt_path = ;/Users/h1y/Documents/mac2server/billiards/txt2xml/labels/;
    img_path = ;/Users/h1y/Documents/mac2server/billiards/txt2xml/images/;
    xml_path = ;/Users/h1y/Documents/mac2server/billiards/txt2xml/;
    txt_to_xml(classname_path, txt_path, img_path, xml_path)

其中;代码中第一步提到的类别标签txt文件内容格式如下;每一行为一个类别

转换后的xml文件和labelimg生成的格式一样;如下所示