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import argparse
import numpy as np
import glob
import os
from xml.dom import minidom
import shutil
np.random.seed(42069)
parser = argparse.ArgumentParser()
parser.add_argument("--train", type=int, default=80, help="Percentage of training dataset")
parser.add_argument("--test", type=int, default=10, help="Percentage of test dataset")
parser.add_argument("--val", type=int, default=10, help="Percentage of validation dataset")
parser.add_argument("-m", "--move", action='store_true', default=False, help="Move files to dataset instead of copying")
parser.add_argument("input_dir")
parser.add_argument("output_dir")
args = parser.parse_args()
if not (args.train + args.test + args.val) == 100:
raise ValueError("Train, Test and Validation percentage should add up to 100")
class_names = os.listdir(args.input_dir)
os.mkdir(args.output_dir)
for class_name in class_names:
dataset_class_dir = os.path.join(args.input_dir, class_name)
dataset_class_dir_output = os.path.join(args.output_dir, class_name)
if not os.path.isdir(dataset_class_dir):
continue
dataset_class_dir = os.path.join(args.input_dir, class_name)
dataset_class_dir_output = os.path.join(args.output_dir, class_name)
os.mkdir(dataset_class_dir_output)
annotations = {}
doc = minidom.parse(os.path.join(dataset_class_dir, "annotations.xml"))
images = doc.getElementsByTagName('image')
for image in images:
image_name = image.attributes['name'].value
annotations[image_name] = image
image_names = list(annotations.keys())
np.random.shuffle(image_names)
train_no = int(round((args.train / 100) * len(image_names)))
assert(train_no > 0)
valid_no = int(round((args.val / 100) * len(image_names)))
assert(valid_no > 0)
test_no = len(image_names) - (train_no + valid_no)
assert(test_no > 0)
train_files = image_names[:train_no]
valid_files = image_names[train_no:train_no + valid_no]
test_files = image_names[train_no + valid_no:]
for subset, arr in [ ("train", train_files), ("test", test_files), ("val", valid_files) ]:
os.mkdir(os.path.join(dataset_class_dir_output, subset))
annotation_xml = minidom.Document()
annotations_root = annotation_xml.createElement('annotations')
annotation_xml.appendChild(annotations_root)
for f in arr:
annotations_root.appendChild(annotations[f])
if not args.move:
shutil.copy2(os.path.join(dataset_class_dir, f), os.path.join(dataset_class_dir_output, subset, f))
else:
shutil.move(os.path.join(dataset_class_dir, f), os.path.join(dataset_class_dir_output, subset, f))
xml_str = annotation_xml.toprettyxml(indent="\t")
with open(os.path.join(dataset_class_dir_output, subset, "annotations.xml"), 'w') as f:
f.write(xml_str) |