Link to this sectionمجموعة بيانات TT100K#

# Ultralytics 🚀 AGPL-3.0 License - https://ultralytics.com/license

# Tsinghua-Tencent 100K (TT100K) dataset https://cg.cs.tsinghua.edu.cn/traffic-sign/ by Tsinghua University
# Documentation: https://cg.cs.tsinghua.edu.cn/traffic-sign/tutorial.html
# Paper: Traffic-Sign Detection and Classification in the Wild (CVPR 2016)
# License: CC BY-NC 2.0 license for non-commercial use only
# Example usage: yolo train data=TT100K.yaml
# parent
# ├── ultralytics
# └── datasets
#     └── TT100K ← downloads here (~18 GB)

# Train/val/test sets as 1) dir: path/to/imgs, 2) file: path/to/imgs.txt, or 3) list: [path/to/imgs1, path/to/imgs2, ..]
path: TT100K # dataset root dir
train: images/train # train images (relative to 'path') 6105 images
val: images/val # val images (relative to 'path') 7641 images (original 'other' split)
test: images/test # test images (relative to 'path') 3071 images

# Classes (221 traffic sign categories, 45 with sufficient training instances)
names:
  0: i1
  1: i10
  2: i11
  3: i12
  4: i13
  5: i14
  6: i15
  7: i2
  8: i3
  9: i4
  10: i5
  11: il100
  12: il110
  13: il50
  14: il60
  15: il70
  16: il80
  17: il90
  18: io
  19: ip
  20: p1
  21: p10
  22: p11
  23: p12
  24: p13
  25: p14
  26: p15
  27: p16
  28: p17
  29: p18
  30: p19
  31: p2
  32: p20
  33: p21
  34: p22
  35: p23
  36: p24
  37: p25
  38: p26
  39: p27
  40: p28
  41: p3
  42: p4
  43: p5
  44: p6
  45: p7
  46: p8
  47: p9
  48: pa10
  49: pa12
  50: pa13
  51: pa14
  52: pa8
  53: pb
  54: pc
  55: pg
  56: ph1.5
  57: ph2
  58: ph2.1
  59: ph2.2
  60: ph2.4
  61: ph2.5
  62: ph2.8
  63: ph2.9
  64: ph3
  65: ph3.2
  66: ph3.5
  67: ph3.8
  68: ph4
  69: ph4.2
  70: ph4.3
  71: ph4.5
  72: ph4.8
  73: ph5
  74: ph5.3
  75: ph5.5
  76: pl10
  77: pl100
  78: pl110
  79: pl120
  80: pl15
  81: pl20
  82: pl25
  83: pl30
  84: pl35
  85: pl40
  86: pl5
  87: pl50
  88: pl60
  89: pl65
  90: pl70
  91: pl80
  92: pl90
  93: pm10
  94: pm13
  95: pm15
  96: pm1.5
  97: pm2
  98: pm20
  99: pm25
  100: pm30
  101: pm35
  102: pm40
  103: pm46
  104: pm5
  105: pm50
  106: pm55
  107: pm8
  108: pn
  109: pne
  110: po
  111: pr10
  112: pr100
  113: pr20
  114: pr30
  115: pr40
  116: pr45
  117: pr50
  118: pr60
  119: pr70
  120: pr80
  121: ps
  122: pw2
  123: pw2.5
  124: pw3
  125: pw3.2
  126: pw3.5
  127: pw4
  128: pw4.2
  129: pw4.5
  130: w1
  131: w10
  132: w12
  133: w13
  134: w16
  135: w18
  136: w20
  137: w21
  138: w22
  139: w24
  140: w28
  141: w3
  142: w30
  143: w31
  144: w32
  145: w34
  146: w35
  147: w37
  148: w38
  149: w41
  150: w42
  151: w43
  152: w44
  153: w45
  154: w46
  155: w47
  156: w48
  157: w49
  158: w5
  159: w50
  160: w55
  161: w56
  162: w57
  163: w58
  164: w59
  165: w60
  166: w62
  167: w63
  168: w66
  169: w8
  170: wo
  171: i6
  172: i7
  173: i8
  174: i9
  175: ilx
  176: p29
  177: w29
  178: w33
  179: w36
  180: w39
  181: w4
  182: w40
  183: w51
  184: w52
  185: w53
  186: w54
  187: w6
  188: w61
  189: w64
  190: w65
  191: w67
  192: w7
  193: w9
  194: pax
  195: pd
  196: pe
  197: phx
  198: plx
  199: pmx
  200: pnl
  201: prx
  202: pwx
  203: w11
  204: w14
  205: w15
  206: w17
  207: w19
  208: w2
  209: w23
  210: w25
  211: w26
  212: w27
  213: pl0
  214: pl4
  215: pl3
  216: pm2.5
  217: ph4.4
  218: pn40
  219: ph3.3
  220: ph2.6

# Download script/URL (optional) ---------------------------------------------------------------------------------------
download: |
  import json
  import shutil
  from pathlib import Path

  from PIL import Image

  from ultralytics.utils import TQDM
  from ultralytics.utils.downloads import download

  def tt100k2yolo(dir):
      """Convert TT100K annotations to YOLO format with images/{split} and labels/{split} structure."""
      data_dir = dir / "data"
      anno_file = data_dir / "annotations.json"

      print("Loading annotations...")
      with open(anno_file, encoding="utf-8") as f:
          data = json.load(f)

      # Build class name to index mapping from yaml
      names = yaml["names"]
      class_to_idx = {v: k for k, v in names.items()}

      # Create directories
      for split in ["train", "val", "test"]:
          (dir / "images" / split).mkdir(parents=True, exist_ok=True)
          (dir / "labels" / split).mkdir(parents=True, exist_ok=True)

      print("Converting annotations to YOLO format...")
      skipped = 0
      for img_id, img_data in TQDM(data["imgs"].items(), desc="Processing"):
          img_path_str = img_data["path"]
          if "train" in img_path_str:
              split = "train"
          elif "test" in img_path_str:
              split = "test"
          else:
              split = "val"

          # Source and destination paths
          src_img = data_dir / img_path_str
          if not src_img.exists():
              continue

          dst_img = dir / "images" / split / src_img.name

          # Get image dimensions
          try:
              with Image.open(src_img) as img:
                  img_width, img_height = img.size
          except Exception as e:
              print(f"Error reading {src_img}: {e}")
              continue

          # Copy image to destination
          shutil.copy2(src_img, dst_img)

          # Convert annotations
          label_file = dir / "labels" / split / f"{src_img.stem}.txt"
          lines = []

          for obj in img_data.get("objects", []):
              category = obj["category"]
              if category not in class_to_idx:
                  skipped += 1
                  continue

              bbox = obj["bbox"]
              xmin, ymin = bbox["xmin"], bbox["ymin"]
              xmax, ymax = bbox["xmax"], bbox["ymax"]

              # Convert to YOLO format (normalized center coordinates and dimensions)
              x_center = ((xmin + xmax) / 2.0) / img_width
              y_center = ((ymin + ymax) / 2.0) / img_height
              width = (xmax - xmin) / img_width
              height = (ymax - ymin) / img_height

              # Clip to valid range
              x_center = max(0, min(1, x_center))
              y_center = max(0, min(1, y_center))
              width = max(0, min(1, width))
              height = max(0, min(1, height))

              cls_idx = class_to_idx[category]
              lines.append(f"{cls_idx} {x_center:.6f} {y_center:.6f} {width:.6f} {height:.6f}\n")

          # Write label file
          if lines:
              label_file.write_text("".join(lines), encoding="utf-8")

      if skipped:
          print(f"Skipped {skipped} annotations with unknown categories")
      print("Conversion complete!")

  # Download
  dir = Path(yaml["path"])  # dataset root dir
  urls = ["https://cg.cs.tsinghua.edu.cn/traffic-sign/data_model_code/data.zip"]
  download(urls, dir=dir, curl=True, threads=1)

  # Convert
  tt100k2yolo(dir)