{
 "cells": [
  {
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   "id": "4521c72a-b114-440f-8aed-2285646ff036",
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   "source": [
    "# GTSRB 数据集处理流程\n",
    "下载地址: https://sid.erda.dk/public/archives/daaeac0d7ce1152aea9b61d9f1e19370/published-archive.html\n",
    "\n",
    "* GTSRB_Final_Training_Images.zip\n",
    "* GTSRB_Final_Test_Images.zip\n",
    "* GTSRB_Final_Test_GT.zip\n",
    "\n",
    "把以上文件放在本笔记本同目录下。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "2c15b90e-4922-4beb-a17e-6d9a646af2cd",
   "metadata": {},
   "outputs": [],
   "source": [
    "!unzip -q GTSRB_Final_Training_Images.zip"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "d7d72f08-7b86-4b88-a30a-6a3afa91e6c4",
   "metadata": {},
   "outputs": [],
   "source": [
    "!unzip -q GTSRB_Final_Test_Images.zip"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "bc9f9416-8f1d-4ff3-bb1c-596923fbf410",
   "metadata": {},
   "outputs": [],
   "source": [
    "!unzip -q GTSRB_Final_Test_GT.zip"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "d88c2aba-812a-45d5-81ba-4b36fba25ffc",
   "metadata": {},
   "outputs": [],
   "source": [
    "!mv GT-final_test.csv GTSRB/"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "caa29d62-d6dc-45aa-876b-74a659295c0e",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "GTSRB 数据集转换脚本\n",
      "输入目录: ./GTSRB\n",
      "输出目录: ./GTSRB_224_balanced\n",
      "\n",
      "正在创建新的输出目录结构...\n",
      "开始处理训练数据集...\n",
      "处理类别: 100%|█████████████████████████████████| 43/43 [00:29<00:00,  1.47it/s]\n",
      "训练数据集处理完成。\n",
      "\n",
      "开始处理测试数据集...\n",
      "处理测试图片: 100%|█████████████████████| 12630/12630 [00:05<00:00, 2110.61it/s]\n",
      "测试数据集处理完成。\n",
      "\n",
      "🎉 全部处理完成！转换后的数据位于: ./GTSRB_224_balanced\n"
     ]
    }
   ],
   "source": [
    "!python extract_gtsrb.py"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "d379c03b-eb27-420e-8441-c578e5c59fc4",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "--- 开始验证数据集: ./GTSRB_224_balanced ---\n",
      "\n",
      "[1] 正在验证 'train' 数据集...\n",
      "检查训练集类别数量: 100%|██████████████████████| 43/43 [00:00<00:00, 569.55it/s]\n",
      "检查训练集图片尺寸: 100%|██████████████| 43000/43000 [00:00<00:00, 53162.76it/s]\n",
      "\n",
      "[2] 正在验证 'test' 数据集...\n",
      "检查测试集图片尺寸: 100%|██████████████| 12630/12630 [00:00<00:00, 51354.59it/s]\n",
      "\n",
      "--- 验证完成 ---\n",
      "✅ 恭喜！所有检查均已通过。\n",
      "   - 所有训练集类别恰好有 1000 个样本。\n",
      "   - 所有训练集和测试集图片的尺寸均为 224x224。\n"
     ]
    }
   ],
   "source": [
    "!python verify_gtsrb.py"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "fd96d762-3baa-4f72-a48b-62924c2fefa4",
   "metadata": {
    "scrolled": true
   },
   "outputs": [],
   "source": [
    "!zip -r -q gtsrb_224_balanced.zip GTSRB_224_balanced"
   ]
  }
 ],
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