关于labelimg使用的坑_labelimg只能标记第一张,标记第二张显示之前的标签

1.闪退问题

进入虚拟环境再打开labelimg即可

2.标签乱序

yolo模式的情况

1.进入labelimg文件夹

 

2.将该文件修改为你所需的标签（记住此处顺序！三者从上至下分别为0 1 2）

 3.打开labelimg后，选择图片文件夹，及保存文件夹，选择yolo模式，打开自动保存

图片文件夹和保存文件夹，分别命名为images，labels

 

 4.打开labels文件夹，新建一classes.txt文件，填写标签信息，如之前顺序一样

（从上至下分别为0 1 2）

 5.开始标注，w标注，标注完第一张后，检查labels文件夹内对应文件

这里开头的0 1 2即代表标签信息，后面为标签框坐标

若要修改标签，在txt文件内修改！不要在labelimg内修改，很容易出错

6.在yolo训练时，yaml文件内标签名也要与上述两个标签名顺序一致，否则训练结果会混乱 

7.最后还是建议使用voc模式训练

 3.xml与txt互转

xml转txt

记得修改类别及路径，路径使用绝对路径

参考链接：python批量实现labelImg标注的 xml格式数据转换成 txt格式保存_labelimg保存txt_深度学习菜鸟的博客-CSDN博客

# -*- coding: utf-8 -*-
import os
import xml.etree.ElementTree as ET
 
dirpath = 'raw_data/xml_raw'  # 原来存放xml文件的目录
newdir = 'raw_data/txt'                # 修改label后形成的txt目录
 
if not os.path.exists(newdir):
    os.makedirs(newdir)
 
dict_info = {'1': 0, '2': 1, '0': 2}              # 有几个 属性 填写几个label names
 
for fp in os.listdir(dirpath):
    if fp.endswith('.xml'):
        root = ET.parse(os.path.join(dirpath, fp)).getroot()
 
        xmin, ymin, xmax, ymax = 0, 0, 0, 0
        sz = root.find('size')
        width = float(sz[0].text)
        height = float(sz[1].text)
        filename = root.find('filename').text
        for child in root.findall('object'):  # 找到图片中的所有框
 
            sub = child.find('bndbox')  # 找到框的标注值并进行读取
            label = child.find('name').text
            label_ = dict_info.get(label)
            if label_:
                label_ = label_
            else:
                label_ = 0
            xmin = float(sub[0].text)
            ymin = float(sub[1].text)
            xmax = float(sub[2].text)
            ymax = float(sub[3].text)
            try:  # 转换成yolov3的标签格式，需要归一化到（0-1）的范围内
                x_center = (xmin + xmax) / (2 * width)
                x_center = '%.6f' % x_center
                y_center = (ymin + ymax) / (2 * height)
                y_center = '%.6f' % y_center
                w = (xmax - xmin) / width
                w = '%.6f' % w
                h = (ymax - ymin) / height
                h = '%.6f' % h
            except ZeroDivisionError:
                print(filename, '的 width有问题')
            with open(os.path.join(newdir, fp.split('.xml')[0] + '.txt'), 'a+') as f:
                f.write(' '.join([str(label_), str(x_center), str(y_center), str(w), str(h) + '\n']))
print('ok')

 txt转xml

记得修改类别

from xml.dom.minidom import Document
import os
import cv2
 
 
def makexml(txtPath, xmlPath, picPath):  # txt所在文件夹路径，xml文件保存路径，图片所在文件夹路径
    """此函数用于将yolo格式txt标注文件转换为voc格式xml标注文件
    在自己的标注图片文件夹下建三个子文件夹，分别命名为picture、txt、xml
    """
    dic = {'0': "C_1",  # 创建字典用来对类型进行转换
           '1': "B_5",  # 此处的字典要与自己的classes.txt文件中的类对应，且顺序要一致
           '2': "A_10",
           }
    files = os.listdir(txtPath)
    for i, name in enumerate(files):
        xmlBuilder = Document()
        annotation = xmlBuilder.createElement("annotation")  # 创建annotation标签
        xmlBuilder.appendChild(annotation)
        txtFile = open(txtPath + name)
        txtList = txtFile.readlines()
        img = cv2.imread(picPath + name[0:-4] + ".jpg")
        Pheight, Pwidth, Pdepth = img.shape
 
        folder = xmlBuilder.createElement("folder")  # folder标签
        foldercontent = xmlBuilder.createTextNode("driving_annotation_dataset")
        folder.appendChild(foldercontent)
        annotation.appendChild(folder)  # folder标签结束
 
        filename = xmlBuilder.createElement("filename")  # filename标签
        filenamecontent = xmlBuilder.createTextNode(name[0:-4] + ".jpg")
        filename.appendChild(filenamecontent)
        annotation.appendChild(filename)  # filename标签结束
 
        size = xmlBuilder.createElement("size")  # size标签
        width = xmlBuilder.createElement("width")  # size子标签width
        widthcontent = xmlBuilder.createTextNode(str(Pwidth))
        width.appendChild(widthcontent)
        size.appendChild(width)  # size子标签width结束
 
        height = xmlBuilder.createElement("height")  # size子标签height
        heightcontent = xmlBuilder.createTextNode(str(Pheight))
        height.appendChild(heightcontent)
        size.appendChild(height)  # size子标签height结束
 
        depth = xmlBuilder.createElement("depth")  # size子标签depth
        depthcontent = xmlBuilder.createTextNode(str(Pdepth))
        depth.appendChild(depthcontent)
        size.appendChild(depth)  # size子标签depth结束
 
        annotation.appendChild(size)  # size标签结束
 
        for j in txtList:
            oneline = j.strip().split(" ")
            object = xmlBuilder.createElement("object")  # object 标签
            picname = xmlBuilder.createElement("name")  # name标签
            namecontent = xmlBuilder.createTextNode(dic[oneline[0]])
            picname.appendChild(namecontent)
            object.appendChild(picname)  # name标签结束
 
            pose = xmlBuilder.createElement("pose")  # pose标签
            posecontent = xmlBuilder.createTextNode("Unspecified")
            pose.appendChild(posecontent)
            object.appendChild(pose)  # pose标签结束
 
            truncated = xmlBuilder.createElement("truncated")  # truncated标签
            truncatedContent = xmlBuilder.createTextNode("0")
            truncated.appendChild(truncatedContent)
            object.appendChild(truncated)  # truncated标签结束
 
            difficult = xmlBuilder.createElement("difficult")  # difficult标签
            difficultcontent = xmlBuilder.createTextNode("0")
            difficult.appendChild(difficultcontent)
            object.appendChild(difficult)  # difficult标签结束
 
            bndbox = xmlBuilder.createElement("bndbox")  # bndbox标签
            xmin = xmlBuilder.createElement("xmin")  # xmin标签
            mathData = int(((float(oneline[1])) * Pwidth + 1) - (float(oneline[3])) * 0.5 * Pwidth)
            xminContent = xmlBuilder.createTextNode(str(mathData))
            xmin.appendChild(xminContent)
            bndbox.appendChild(xmin)  # xmin标签结束
 
            ymin = xmlBuilder.createElement("ymin")  # ymin标签
            mathData = int(((float(oneline[2])) * Pheight + 1) - (float(oneline[4])) * 0.5 * Pheight)
            yminContent = xmlBuilder.createTextNode(str(mathData))
            ymin.appendChild(yminContent)
            bndbox.appendChild(ymin)  # ymin标签结束
 
            xmax = xmlBuilder.createElement("xmax")  # xmax标签
            mathData = int(((float(oneline[1])) * Pwidth + 1) + (float(oneline[3])) * 0.5 * Pwidth)
            xmaxContent = xmlBuilder.createTextNode(str(mathData))
            xmax.appendChild(xmaxContent)
            bndbox.appendChild(xmax)  # xmax标签结束
 
            ymax = xmlBuilder.createElement("ymax")  # ymax标签
            mathData = int(((float(oneline[2])) * Pheight + 1) + (float(oneline[4])) * 0.5 * Pheight)
            ymaxContent = xmlBuilder.createTextNode(str(mathData))
            ymax.appendChild(ymaxContent)
            bndbox.appendChild(ymax)  # ymax标签结束
 
            object.appendChild(bndbox)  # bndbox标签结束
 
            annotation.appendChild(object)  # object标签结束
 
        f = open(xmlPath + name[0:-4] + ".xml", 'w')
        xmlBuilder.writexml(f, indent='\t', newl='\n', addindent='\t', encoding='utf-8')
        f.close()
 
 
makexml("D:/A_coin/yolov5-master/CoinData/labels/", "D:/A_coin/yolov5-master/CoinData/xml/",
        "D:/A_coin/yolov5-master/CoinData/Images/")  # txt所在文件夹路径，xml文件保存路径，图片所在文件夹路径
 
 
# if __name__ == "__main__":
#     picPath = "D:/A_coin/yolov5-master/CoinData/Images/"  # 图片所在文件夹路径，后面的\\一定要带上
#     txtPath = "D:/A_coin/yolov5-master/CoinData/labels/"  # txt所在文件夹路径，后面的\\一定要带上
#     xmlPath = "D:/A_coin/yolov5-master/CoinData/xml/"  # xml文件保存路径，后面的\\一定要带上
#     makexml(picPath, txtPath, xmlPath)