From 4344d2d940a7fd3b6bfebbe2f30e9dce326cb449 Mon Sep 17 00:00:00 2001
From: mert <3117970+CatcherInThePy@users.noreply.github.com>
Date: Mon, 4 Apr 2022 15:51:42 +0300
Subject: [PATCH] Updated train_test_split.py

---
 train_test_split.py | 94 ++++++++++++++++++++++++++-------------------
 1 file changed, 54 insertions(+), 40 deletions(-)

diff --git a/train_test_split.py b/train_test_split.py
index 30d3a7a..7ec37f5 100644
--- a/train_test_split.py
+++ b/train_test_split.py
@@ -1,52 +1,66 @@
 import os
 import random
 import shutil
-
-imgList = os.listdir('images')
-
-
-#shuffling images
-random.shuffle(imgList)
-
-split = 0.2
-
-train_path = 'custom_dataset/train'
-val_path = 'custom_dataset/val'
-
-if os.path.isdir(train_path) == False:
-    os.makedirs(train_path)
-if os.path.isdir(val_path) == False:
-    os.makedirs(val_path)
-
-imgLen = len(imgList)
-print("Images in total: ", imgLen)
-
-train_images = imgList[: int(imgLen - (imgLen*split))]
-val_images = imgList[int(imgLen - (imgLen*split)):]
-print("Training images: ", len(train_images))
-print("Validation images: ", len(val_images))
-
-for imgName in train_images:
-    og_path = os.path.join('images', imgName)
-    target_path = os.path.join(train_path, imgName)
-
+import argparse
+
+# Argument Parsing
+parser = argparse.ArgumentParser(description='A python script that splits the labeled data into train/test data in Yolov5 format')
+parser.add_argument('-name', help='Name of custom dataset directory', default='custom_dataset')
+parser.add_argument('-testsize', help='Test split size. Expects floating point number. Default test split size is 0.2', default=0.2)
+parser.add_argument('-images', help='Path to images directory', default='images')
+parser.add_argument('-labels', help='Path to bounding box txt files directory', default='bbox_txt')
+args = vars(parser.parse_args())
+
+img_list = os.listdir(args['images'])
+
+# Shuffling images
+random.shuffle(img_list)
+
+split = args['testsize']
+print('# Test split size:', split)
+
+# Creating split directory
+train_images_path = os.path.join(args['name'], 'train', 'images')
+train_labels_path = os.path.join(args['name'], 'train', 'labels')
+val_images_path = os.path.join(args['name'], 'val', 'images')
+val_labels_path = os.path.join(args['name'], 'val', 'labels')
+os.makedirs(train_images_path, exist_ok = True)
+os.makedirs(train_labels_path, exist_ok = True)
+os.makedirs(val_images_path, exist_ok = True)
+os.makedirs(val_labels_path, exist_ok = True)
+
+img_len = len(img_list)
+print("# Images in total: ", img_len)
+
+train_images = img_list[: int(img_len - (img_len*split))]
+val_images = img_list[int(img_len - (img_len*split)):]
+print("# Training images: ", len(train_images))
+print("# Validation images: ", len(val_images))
+
+for img_name in train_images:
+    base_name, ext = os.path.splitext(img_name)
+
+    # Copy image
+    og_path = os.path.join(args['images'], img_name)
+    target_path = os.path.join(train_images_path, img_name)
     shutil.copyfile(og_path, target_path)
 
-    og_txt_path = os.path.join('bbox_txt', imgName.replace('.jpg', '.txt'))
-    target_txt_path = os.path.join(train_path, imgName.replace('.jpg', '.txt'))
-
+    # Copy bounding box txt file
+    og_txt_path = os.path.join(args['labels'], base_name + '.txt')
+    target_txt_path = os.path.join(train_labels_path, base_name + '.txt')
     shutil.copyfile(og_txt_path, target_txt_path)
 
-for imgName in val_images:
-    og_path = os.path.join('images', imgName)
-    target_path = os.path.join(val_path, imgName)
+for img_name in val_images:
+    base_name, ext = os.path.splitext(img_name)
 
+    # Copy image
+    og_path = os.path.join(args['images'], img_name)
+    target_path = os.path.join(val_images_path, img_name)
     shutil.copyfile(og_path, target_path)
 
-    og_txt_path = os.path.join('bbox_txt', imgName.replace('.jpg', '.txt'))
-    target_txt_path = os.path.join(val_path, imgName.replace('.jpg', '.txt'))
-
+    # Copy bounding box txt file
+    og_txt_path = os.path.join(args['labels'], base_name + '.txt')
+    target_txt_path = os.path.join(val_labels_path, base_name + '.txt')
     shutil.copyfile(og_txt_path, target_txt_path)
 
-
-print("Done! ")
+print("# Done!")