from PIL import Imageimport numpy as npimport matplotlib.pyplot as pltdef ImageToMatrix(filename):    # 读取图片    im = Image.open(filename)    width,height = im.size    data = im.getdata()    data = np.matrix(data,dtype='float')/255    # 这里处理的是rgb三通道的图片    new_data = np.reshape(data.getA(),(height,width,3))   # 单色图片：new_data = np.reshape(data,-1,height*width)    return new_datadef MatrixToImage(data):    # 显示图片    data = data*255    new_im = Image.fromarray(data.astype(np.uint8))    return new_imfilename = '/Users/gaowenfeng/Documents/图片/头像.png'data = ImageToMatrix(filename)# print(data)new_im = MatrixToImage(data)plt.imshow(data, cmap=plt.cm.gray, interpolation='nearest')new_im.show()复制代码