警告无法打开/读取文件：检查文件路径/完整性

Question

images_per_class = 80
fixed_size       = tuple((500, 500))
train_path       = "dataset/train"

train_labels = os.listdir(train_path)
for training_name in train_labels:
dir = os.path.join(train_path, training_name)
current_label = training_name
   for x in range(1,images_per_class+1):
    # get the image file name
    file = dir + "/" + str(x) + ".jpg"

    # read the image and resize it to a fixed-size
    image = cv2.imread(file)
    image = cv2.resize(image, fixed_size)

当我运行此代码时出现此错误

error: OpenCV(4.5.5) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\resize.cpp:4052: error: (-215:Assertion failed) !ssize.empty() in function 'cv::resize'

和这个警告[ WARN:0@19.045] global D:\a\opencv-python\opencv-python\opencv\modules\imgcodecs\src\loadsave.cpp (239) cv::findDecoder imread_('dataset/train\Apple/1.jpg'): can't open/read file: check file path/integrity

我安装 opencv 没有问题，因为我之前使用过它并且使用了另一个代码，它有任何帮助吗？

Answer 1

亲爱的，对我来说，问题与文件扩展名有关。我添加了扩展名 .JPEG，而实际扩展名是 .jpg。更正扩展即可清除警告。谢谢

Answer 2

文件=目录+“/”+str(x)+“.jpg”

尝试将此行替换为：

file = dir + "\" + str(x) + ".jpg"

/ 不正确

正确的是\