feat:add get_raw_data.py

ResNet-CIFAR10/Classification-normal/scripts/get_raw_data.py

@@ -0,0 +1,82 @@
+#读取数据集，在../dataset/raw_data下按照数据集的完整排序,1.png,2.png,3.png,...保存
+
+import os
+import numpy as np
+import torchvision
+import torchvision.transforms as transforms
+from PIL import Image
+from tqdm import tqdm
+
+def unpickle(file):
+    """读取CIFAR-10数据文件"""
+    import pickle
+    with open(file, 'rb') as fo:
+        dict = pickle.load(fo, encoding='bytes')
+    return dict
+
+def save_images_from_cifar10(dataset_path, save_dir):
+    """从CIFAR-10数据集中保存图像
+    
+    Args:
+        dataset_path: CIFAR-10数据集路径
+        save_dir: 图像保存路径
+    """
+    # 创建保存目录
+    os.makedirs(save_dir, exist_ok=True)
+    
+    # 获取训练集数据
+    train_data = []
+    train_labels = []
+    
+    # 读取训练数据
+    for i in range(1, 6):
+        batch_file = os.path.join(dataset_path, f'data_batch_{i}')
+        if os.path.exists(batch_file):
+            print(f"读取训练批次 {i}")
+            batch = unpickle(batch_file)
+            train_data.append(batch[b'data'])
+            train_labels.extend(batch[b'labels'])
+    
+    # 合并所有训练数据
+    if train_data:
+        train_data = np.vstack(train_data)
+        train_data = train_data.reshape(-1, 3, 32, 32).transpose(0, 2, 3, 1)
+    
+    # 读取测试数据
+    test_file = os.path.join(dataset_path, 'test_batch')
+    # if os.path.exists(test_file):
+    #     print("读取测试数据")
+    #     test_batch = unpickle(test_file)
+    #     test_data = test_batch[b'data']
+    #     test_labels = test_batch[b'labels']
+    #     test_data = test_data.reshape(-1, 3, 32, 32).transpose(0, 2, 3, 1)
+    # else:
+    test_data = []
+    test_labels = []
+    
+    # 合并训练和测试数据
+    all_data = np.concatenate([train_data, test_data]) if len(test_data) > 0 and len(train_data) > 0 else (train_data if len(train_data) > 0 else test_data)
+    all_labels = train_labels + test_labels if len(test_labels) > 0 and len(train_labels) > 0 else (train_labels if len(train_labels) > 0 else test_labels)
+    
+    # 保存图像
+    print(f"保存 {len(all_data)} 张图像...")
+    for i, (img, label) in enumerate(tqdm(zip(all_data, all_labels), total=len(all_data))):
+        img = Image.fromarray(img)
+        img.save(os.path.join(save_dir, f"{i+1}.png"))
+    
+    print(f"完成! {len(all_data)} 张图像已保存到 {save_dir}")
+
+if __name__ == "__main__":
+    # 设置路径
+    dataset_path = "../dataset/cifar-10-batches-py"
+    save_dir = "../dataset/raw_data"
+    
+    # 检查数据集是否存在，如果不存在则下载
+    if not os.path.exists(dataset_path):
+        print("数据集不存在，正在下载...")
+        os.makedirs("../dataset", exist_ok=True)
+        transform = transforms.Compose([transforms.ToTensor()])
+        trainset = torchvision.datasets.CIFAR10(root="../dataset", train=True, download=True, transform=transform)
+    
+    # 保存图像
+    save_images_from_cifar10(dataset_path, save_dir)