import os import xml.etree.ElementTree as ET
def convert(size, box): x_center = (box[0] + box[1]) / 2.0 y_center = (box[2] + box[3]) / 2.0 x = x_center / size[0] y = y_center / size[1] w = (box[1] - box[0]) / size[0] h = (box[3] - box[2]) / size[1] return x, y, w, h
def convert_single_annotation(xml_file, save_txt_file, classes): try: tree = ET.parse(xml_file) root = tree.getroot() size = root.find('size') w = int(size.find('width').text) h = int(size.find('height').text)
with open(save_txt_file, 'w') as out_txt_f:
for obj in root.iter('object'):
difficult = obj.find('difficult').text
cls = obj.find('name').text
if cls not in classes or int(difficult) == 1:
continue
cls_id = classes.index(cls)
xmlbox = obj.find('bndbox')
b = (float(xmlbox.find('xmin').text), float(xmlbox.find('xmax').text),
float(xmlbox.find('ymin').text), float(xmlbox.find('ymax').text))
bb = convert((w, h), b)
out_txt_f.write(f"{cls_id} {' '.join(map(str, bb))}\n")
except (ET.ParseError, FileNotFoundError) as e:
print(f"Error processing {xml_file}: {e}")
def convert_annotation(xml_files_path, save_txt_files_path, classes): xml_files = [f for f in os.listdir(xml_files_path) if f.endswith('.xml')] print(xml_files) for xml_name in xml_files: print(xml_name) xml_file = os.path.join(xml_files_path, xml_name) out_txt_path = os.path.join(save_txt_files_path, xml_name.split('.')[0] + '.txt')
if not os.path.exists(save_txt_files_path):
os.makedirs(save_txt_files_path)
convert_single_annotation(xml_file, out_txt_path, classes)
if name == "main": classes1 = ['1'] xml_files1 = r'zhuzi/data' save_txt_files1 = r'zhuzi/data'
convert_annotation(xml_files1, save_txt_files1, classes1)