Python图片转换成矩阵，矩阵数据转换成图片

# coding=gbkfrom PIL import Imageimport numpy as np# import scipydef loadImage():    # 读取图片    im = Image.open("lena.jpg")    # 显示图片    im.show()         im = im.convert("L")     data = im.getdata()    data = np.matrix(data)#     print data     # 变换成512*512    data = np.reshape(data,(512,512))    new_im = Image.fromarray(data)    # 显示图片    new_im.show()    loadImage()