Question

我正在关注this tutorial以构建图像二进制分类器。按照说明操作，我的下面的代码是尝试加载图像＆＃34; test_00000.png＆＃34;为了随机生成原始图像的20个变换：

from keras.preprocessing.image import ImageDataGenerator, array_to_img, img_to_array, load_img

datagen = ImageDataGenerator(
        rotation_range=40,
        width_shift_range=0.2,
        height_shift_range=0.2,
        rescale=1./255,
        shear_range=0.2,
        zoom_range=0.2,
        horizontal_flip=True,
        fill_mode='nearest')

img = load_img('/Users/Steven/data/image_data/test_00000.png')  # this is a PIL image
x = img_to_array(img)  # this is a Numpy array with shape (3, 150, 150)
x = x.reshape((1,) + x.shape)  # this is a Numpy array with shape (1, 3, 150, 150)

# the .flow() command below generates batches of randomly transformed images
# and saves the results to the `preview/` directory
i = 0
for batch in datagen.flow(x, batch_size=1,
                          save_to_dir='/Users/Steven/data/image_data/preview', save_prefix='test', save_format='png'):
    i += 1
    if i > 20:
        break  # otherwise the generator would loop indefinitely

但我收到了一个错误：

   Traceback (most recent call last):
  File "tf.py", line 28, in <module>
    save_to_dir='/Users/Steven/data/image_data/preview', save_prefix='test', save_format='png'):
  File "C:\Users\Steven\Anaconda3\lib\site-packages\keras\preprocessing\image.py", line 1069, in __next__
    return self.next(*args, **kwargs)
  File "C:\Users\Steven\Anaconda3\lib\site-packages\keras\preprocessing\image.py", line 1189, in next
    return self._get_batches_of_transformed_samples(index_array)
  File "C:\Users\Steven\Anaconda3\lib\site-packages\keras\preprocessing\image.py", line 1171, in _get_batches_of_transformed_samples
    img.save(os.path.join(self.save_to_dir, fname))
  File "C:\Users\Steven\Anaconda3\lib\site-packages\PIL\Image.py", line 1932, in save
    fp = builtins.open(filename, "w+b")
FileNotFoundError: [Errno 2] No such file or directory: '/Users/Steven/data/image_data/preview\\test_0_2149.png'

我手动建立了一个名为＆＃34的文件夹;预览＆＃34;在/ User / Steven / data / image_data中，这就是为什么我不明白这个错误是如何发生的。感谢您的帮助！

Answer 1

我遇到了同样的问题，我认为原因是API调用发生了一些变化。相反，可以使用：

tf.keras.preprocessing.image.load_img(
    path, grayscale=False, color_mode='rgb', target_size=None,
    interpolation='nearest' )

记住要更改路径：）

Answer 2

正确的路径应该是

$ ./bin/array_rotate
before:
  0  1  2  3  4  5  6  7  8  9

elimination
(remove indexes 2,0,7,3,2,3,2,1,1):
 index 2 (2) to end 9
  0  1  3  4  5  6  7  8  9  2
 index 0 (0) to end 8
  1  3  4  5  6  7  8  9  0  2
 index 7 (9) is last index 7 - no swap.
  1  3  4  5  6  7  8  9  0  2
 index 3 (5) to end 6
  1  3  4  6  7  8  5  9  0  2
 index 2 (4) to end 5
  1  3  6  7  8  4  5  9  0  2
 index 3 (7) to end 4
  1  3  6  8  7  4  5  9  0  2
 index 2 (6) to end 3
  1  3  8  6  7  4  5  9  0  2
 index 1 (3) to end 2
  1  8  3  6  7  4  5  9  0  2
 index 1 (8) is last index 1 - no swap.
  1  8  3  6  7  4  5  9  0  2

after:
  1  8  3  6  7  4  5  9  0  2

您忘记了分区字母'C:\\Users\\Steven\\data\\image_data\\preview\\test_0_2149.png'

P.S .：我在Windows上遇到类似的问题，发现我的某些图像的完整路径具有超过C:\\个字符，这在Windows上是一个限制。我的解决方案是将文件夹移动到最浅的路径。

＆＃34;没有这样的文件或目录：＆＃34;使用Keras加载图像时出错

2 个答案: