常用目标检测模型基本都是读取的PASCAL VOC格式的标签，下面代码用于生成VOC格式的代码，根据需要修改即可：

from lxml import etree, objectify

def gen_txt(filename, h, w, c):

E = objectify.ElementMaker(annotate=False)

anno_tree = E.annotation(

E.folder('VOC_OPEN_IMAGE'),

E.filename(filename),

E.source(

E.database('The VOC2007 Database'),

E.annotation('PASCAL VOC2007'),

E.image('flickr'),

E.flickrid("341012865")

),

E.size(

E.width(w),

E.height(h),

E.depth(c)

),

E.segmented(0),

E.object(

E.name('1'),

E.pose('left'),

E.truncated('1'),

E.difficult('0'),

E.bndbox(

E.xmin('0'),

E.ymin('0'),

E.xmax('0'),

E.ymax('0')

)

),

)

etree.ElementTree(anno_tree).write('ann/'+filename[:-4]+".xml", pretty_print=True)

补充知识： python对PASCAL VOC标注数据进行统计

用于统计训练数据中的类别，以及所有目标的个数：

# coding:utf-8

import xml.etree.cElementTree as ET

import os

from collections import Counter

import shutil

# Counter({'towCounter({'tower': 3074, 'windpower': 2014, 'thermalpower': 689, 'hydropower': 261, 'transformer': 225})

# total_num: 6263

def count(pathdir,despath):

category = []

path = pathdir + '/XML/'

for index,xml in enumerate(os.listdir(path)):

# print(str(index) + ' xml: '+ xml)

root = ET.parse(os.path.join(path, xml))

objects = root.findall('object')

# ==================select images which has a special object=============

for obj in objects:

obj_label = obj.find('name').text

if obj_label == 'transformer':

print(xml)

imgfile = pathdir + 'JPEG/' + xml.replace('xml', 'jpg')

img_despath = despath + xml.replace('xml', 'jpg')

# if not os.path.exists(img_despath):

shutil.copyfile(imgfile, img_despath)

# ==================select images which has a special object=============

category += [ob.find('name').text for ob in objects]

print(Counter(category))

total_num = sum([value for key, value in Counter(category).items()])

print('total_num:',total_num)

if __name__ == '__main__':

# pathdirs = list(set(os.listdir('./')) ^ set(['tools','count.py']))

# print(pathdirs)

# for pathdir in pathdirs:

pathdir = '/summer/Desktop/power_traindata/'

despath = '/transformer/'

count(pathdir,despath)

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本文标题: Python 生成VOC格式的标签实例

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