skimage imread无法加载jpoed图像

Question

我正在尝试使用skimage读取jpeg图像。但是我得到了下面的错误。我已经在/usr/local下安装了依赖的libjpeg

#Import libraries for doing image analysis
from skimage.io import imread
from skimage.transform import resize


image = imread("/root/ObjectClass/train/99938.jpg", as_grey=True)

S

    park assembly has been built with Hive, including Datanucleus jars on classpath
    Traceback (most recent call last):
      File "/root/ObjectClass/OC.py", line 6, in <module>
        image = imread("/root/ObjectClass/train/99938.jpg", as_grey=True)
      File "/usr/local/lib/python2.6/site-packages/scikit_image-0.11.3-py2.6-linux-x86_64.egg/skimage/io/_io.py", line 100, in imread
        img = call_plugin('imread', fname, plugin=plugin, **plugin_args)
      File "/usr/local/lib/python2.6/site-packages/scikit_image-0.11.3-py2.6-linux-x86_64.egg/skimage/io/manage_plugins.py", line 207, in call_plugin
        return func(*args, **kwargs)
      File "/usr/local/lib/python2.6/site-packages/scikit_image-0.11.3-py2.6-linux-x86_64.egg/skimage/io/_plugins/pil_plugin.py", line 52, in imread
        raise ValueError('Could not load "%s"\nPlease see documentation at: %s' % (fname, site))
    ValueError: Could not load "/root/ObjectClass/train/99938.jpg"
    Please see documentation at: http://pillow.readthedocs.org/en/latest/installation.html#external-libraries

Answer 1

查看代码，pil_plugin.py (第52行)抛出一个错误，因为下面两个调用失败。

im = Image.open(fname) 
im.getdata()[0] 

所以，这实际上是PIL的问题。尝试重新安装PIL以解决此问题。

sudo pip uninstall PIL
sudo pip install PIL  

Answer 2

这发生在我的一个格式错误的jpg上--文件似乎没有正确保存，并且在某种程度上被损坏了。当我试图在GIMP中打开jpg时，我注意到了一个错误。