Python 2.7 ndarray的Numpy堆栈列表
我有一个形状为3、64、64的图像列表,读取它们并将它们存储在图像列表中。 然后我将堆栈应用于列表:Python 2.7 ndarray的Numpy堆栈列表,python-2.7,list,numpy,opencv,multidimensional-array,Python 2.7,List,Numpy,Opencv,Multidimensional Array,我有一个形状为3、64、64的图像列表,读取它们并将它们存储在图像列表中。 然后我将堆栈应用于列表: images = np.stack(images) 我得到了这个错误: File "/usr/local/lib/python2.7/dist-packages/numpy/core/shape_base.py", line 350, in stack raise ValueError('need at least one array to stack') ValueError: need
images = np.stack(images)
我得到了这个错误:
File "/usr/local/lib/python2.7/dist-packages/numpy/core/shape_base.py", line 350, in stack
raise ValueError('need at least one array to stack')
ValueError: need at least one array to stack'
如果有任何人对此有所了解,我将不胜感激。我可以通过以下方式重现您的错误:
In [94]: images=[]
In [95]: np.stack(images)
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
<ipython-input-95-adab3e1812bc> in <module>()
----> 1 np.stack(images)
/usr/local/lib/python3.5/dist-packages/numpy/core/shape_base.py in stack(arrays, axis, out)
347 arrays = [asanyarray(arr) for arr in arrays]
348 if not arrays:
--> 349 raise ValueError('need at least one array to stack')
350
351 shapes = set(arr.shape for arr in arrays)
ValueError: need at least one array to stack
列表不是空的图像不是空的,因为我将图像附加到列表上,祝你好运!
In [97]: not images
Out[97]: True