You need to install Pillow (formerly PIL). From the docs on scipy.misc
:
Note that Pillow is not a dependency of SciPy but the image manipulation functions indicated in the list below are not available without it:
...
imread
...
After installing Pillow, I was able to access imread
as follows:
In [1]: import scipy.misc
In [2]: scipy.misc.imread
Out[2]: <function scipy.misc.pilutil.imread>