import scipy.misc
b=scipy.misc.imread('/home/zzp/2.jpg')

scipy.misc.imread（name, flatten=False, mode=None）

read a image from a file as an array將圖片讀取出來為array型別，即numpy型別

 引數：

name : str or file object.  The file name or file object to be read.
flatten : bool, optional.   If True, flattens the color layers into a single gray-scale layer.
mode 
 
: str, optional.       Mode to convert image to, e.g. ``'RGB'``.  See the Notes for more details.
Returns   
imread : ndarray
    The array obtained by reading the image.

 mode詳細資訊:

`imread` uses the Python Imaging Library (PIL) to read an image.
The following notes are from the PIL documentation.

   """
    Notes
    -----
    `imread` uses the Python Imaging Library (PIL) to read an image.
    The following notes are from the PIL documentation.

    `mode` can be one of the following strings:

    * 'L' (8-bit pixels, black and white)
    * 'P' (8-bit pixels, mapped to any other mode using a color palette)
    * 'RGB' (3x8-bit pixels, true color)
    * 'RGBA' (4x8-bit pixels, true color with transparency mask)
    * 'CMYK' (4x8-bit pixels, color separation)
    * 'YCbCr' (3x8-bit pixels, color video format)
    * 'I' (32-bit signed integer pixels)
    * 'F' (32-bit floating point pixels)

    PIL also provides limited support for a few special modes, including
    'LA' ('L' with alpha), 'RGBX' (true color with padding) and 'RGBa'
    (true color with premultiplied alpha).

    When translating a color image to black and white (mode 'L', 'I' or
    'F'), the library uses the ITU-R 601-2 luma transform::

        L = R * 299/1000 + G * 587/1000 + B * 114/1000

    When `flatten` is True, the image is converted using mode 'F'.
    When `mode` is not None and `flatten` is True, the image is first
    converted according to `mode`, and the result is then flattened using
    mode 'F'.

    """