值错误：轴与数组不匹配 - 无法转置数组

Question

回溯错误

Traceback (most recent call last):
File "C:Userstrial2trial.py", line 55, in <module>
image_stack(image)
File "C:Userstrial2trial.py", line 41, in image_stack
transposed_axes = np.transpose(img, axes=concat)
File "<__array_function__ internals>", line 5, in transpose
File "C:Userstrial2venvlibsite-packagesnumpycorefromnumeric.py", line 660, in transpose
return _wrapfunc(a, 'transpose', axes)
File "C:Userstrial2venvlibsite-packagesnumpycorefromnumeric.py", line 57, in _wrapfunc
return bound(*args, **kwds)
ValueError: axes don't match array

Traceback Error也在那里，如果这有助于解决问题我需要计算作为参数输入到函数中的图像的新的转置轴。该函数获取图像的形状，然后计算图像的转置轴。问题是在将图像数组转置到新轴时发生的。我不明白为什么它不工作的问题。我是否需要将concat变量转换为元组以使其正常工作，或者是其他原因导致该问题

def image_stack(image):
img_shape = cv2.imread(image).shape
img = np.asarray(img_shape)
print(type(img))
n = len(img)
val_1 = list(range(1, n - 1, 2))
val_2 = list(range(0, n - 1, 2))
print(img)
if n % 2 == 0:
y_ax = val_1
x_ax = val_2
axes = (y_ax, x_ax, [n-1])
else:
y_ax = val_2
x_ax = val_1
axes = (y_ax, x_ax, [n - 1])
print(type(axes))
concat = np.concatenate(axes)
print(concat)
if type(axes) == tuple:
transposed_axes = np.transpose(img, axes=concat)
print(transposed_axes)
image = 'C:\trial_images\9.jpg'
image_stack(image) 

Answer 1

轴参数的类型不重要:

In [96]: arr = np.ones( [720, 1280, 3 ] )
In [97]: np.transpose(arr,[0,1,2]).shape
Out[97]: (720, 1280, 3)
In [98]: np.transpose(arr,(0,1,2)).shape
Out[98]: (720, 1280, 3)
In [99]: np.transpose(arr,np.array([0,1,2])).shape
Out[99]: (720, 1280, 3)

但是如果我提供比arr的维度更多的值，我得到你的错误:

In [103]: np.transpose(arr,[0,1,2,3]).shape
Traceback (most recent call last):
File "<ipython-input-103-fc01ec77b59e>", line 1, in <module>
np.transpose(arr,[0,1,2,3]).shape
File "<__array_function__ internals>", line 5, in transpose
File "/usr/local/lib/python3.8/dist-packages/numpy/core/fromnumeric.py", line 660, in transpose
return _wrapfunc(a, 'transpose', axes)
File "/usr/local/lib/python3.8/dist-packages/numpy/core/fromnumeric.py", line 57, in _wrapfunc
return bound(*args, **kwds)
ValueError: axes don't match array

我期望对于[0,1,2]和2darr也是如此。

希望这能给你一些如何自己调试问题的想法。启动一个交互式会话，并尝试一些替代方案。