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xml2kitti.py
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xml2kitti.py
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# -*- coding: utf-8 -*-
import sys
from os import listdir
from os.path import isfile, isdir, join, dirname, splitext, basename
import xml.etree.ElementTree as ET
class XMLReader:
def __init__(self, path):
file = open(path, 'r')
self.path = path
self.content = file.read()
self.root = ET.fromstring(self.content)
self.template = "{name} 0.00 0 0.0 {xmin}.00 {ymin}.00 {xmax}.00 {ymax}.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0"
def get_filename(self):
return splitext(basename(self.path))[0]
def get_dir(self):
return dirname(self.path)
def get_objects(self):
objects = []
for object in self.root.findall("object"):
objects.append({
"name" : object.find("name").text,
"xmin" : object.find("bndbox").find("xmin").text,
"ymin" : object.find("bndbox").find("ymin").text,
"xmax" : object.find("bndbox").find("xmax").text,
"ymax" : object.find("bndbox").find("ymax").text
})
return objects
def fill_template(self, object):
return self.template.format(**object)
def export_kitti(self):
objects = self.get_objects()
#Skip empty
if len(objects) == 0: return False
file = open(join(self.get_dir(), self.get_filename()) + ".txt", 'w')
for object in objects[:-1]:
file.write(self.fill_template(object) + "\n")
# Write last without '\n'
file.write(self.fill_template(objects[-1]))
file.close()
return True
def process_file(path):
xml_reader = XMLReader(path)
return xml_reader.export_kitti()
def get_directory_xml_files(dir):
return [join(dir, f) for f in listdir(dir) if isfile(join(dir, f)) and splitext(f)[1].lower() == ".xml"]
def check_argv(argv):
return len(argv) > 1
def main():
if not check_argv(sys.argv):
print("Wrong arguments. You should specify xml files or directory with xml files")
# remove script name
args = sys.argv[1:]
processed_file_count = 0
for path in args:
files = []
if isfile(path):
files.append(path)
elif isdir(path):
files += get_directory_xml_files(path)
for file in files:
if process_file(file): processed_file_count += 1
print("Finished. {0} Files are processed".format(processed_file_count))
if __name__ == "__main__":
main()