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问ValueError in skimage.io.imread()
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Stack Overflow用户

提问于 2020-08-04 06:09:11

回答 1查看 708关注 0票数 0

在进行图像处理时，我得到了一个(ValueError:未能找到在模式‘i’中读取指定文件的格式)：

import matplotlib.pyplot as plt
from skimage.color import rgb2gray
from skimage.transform import resize
from skimage.io import imread, imshow
import pandas as pd
import numpy as np
import os
import warnings
warnings.simplefilter('ignore')


%matplotlib inline

p1 = os.listdir("C:/Users/IMA/Documents/ML/image/p1")
p2 = os.listdir("C:/Users/IMA/Documents/ML/image/p2")

limit = 20
p1_image = [None]*limit
j = 0
for i in p1:
    if(j < limit):
        p1_image[j] = imread("C:/Users/IMA/Documents/ML/image/p1/"+i)
        j += 1
    else:
        break

ValueError                                Traceback (most recent call last)
<ipython-input-7-1854baa31099> in <module>
      4 for i in p1:
      5     if(j<limit):
----> 6         p1_image[j]=imread("C:/Users/IMA/Documents/ML/image/p1/"+i)
      7         j+=1
      8     else:

~\anaconda3\lib\site-packages\skimage\io\_io.py in imread(fname, as_gray, plugin, **plugin_args)
     46 
     47     with file_or_url_context(fname) as fname:
---> 48         img = call_plugin('imread', fname, plugin=plugin, **plugin_args)
     49 
     50     if not hasattr(img, 'ndim'):

~\anaconda3\lib\site-packages\skimage\io\manage_plugins.py in call_plugin(kind, *args, **kwargs)
    208                                (plugin, kind))
    209 
--> 210     return func(*args, **kwargs)
    211 
    212 

~\anaconda3\lib\site-packages\skimage\io\_plugins\imageio_plugin.py in imread(*args, **kwargs)
      8 @wraps(imageio_imread)
      9 def imread(*args, **kwargs):
---> 10     return np.asarray(imageio_imread(*args, **kwargs))

~\anaconda3\lib\site-packages\imageio\core\functions.py in imread(uri, format, **kwargs)
    262 
    263     # Get reader and read first
--> 264     reader = read(uri, format, "i", **kwargs)
    265     with reader:
    266         return reader.get_data(0)

~\anaconda3\lib\site-packages\imageio\core\functions.py in get_reader(uri, format, mode, **kwargs)
    180     if format is None:
    181         raise ValueError(
--> 182             "Could not find a format to read the specified file " "in mode %r" % mode
    183         )
    184 

ValueError: Could not find a format to read the specified file in mode 'i'

jupyter-notebook

valueerror

python

machine-learning

image-processing

回答 1

Stack Overflow用户

回答已采纳

发布于 2020-08-04 10:27:10

很可能您的目录中有非映像文件。

您可以将非映像文件移动到另一个目录，或者需要指定图像扩展名.

。

例如:使用glob获取所有png扩展名文件。

import matplotlib.pyplot as plt
from skimage.color import rgb2gray
from skimage.transform import resize
from skimage.io import imread, imshow
import pandas as pd
import numpy as np
import os
from glob import glob
import warnings
warnings.simplefilter('ignore')

path = "C:/Users/IMA/Documents/ML/image/p1/*.png"
p1 = glob(path)
p2 = os.listdir("C:/Users/IMA/Documents/ML/image/p2")

limit = 20
p1_image = [None]*limit
j = 0
for i in p1:
    if j < limit:
        p1_image[j] = imread(i)
        j += 1
    else:
        break