from scipy import misc import matplotlib.pyplot as plt lena=misc.lena();print lena.shape lena2=lena.repeat(3,axis=0).repeat(2,axis=1);print lena2.shape #resize plt.figure(0) plt.subplot(211) plt.imshow(lena) plt.subplot(212) plt.imshow(lena2) plt.figure(1) acopy=lena.copy();print acopy.shape #copy aview=acopy.view() aview.flat=0 plt.imshow(aview) plt.figure(2) plt.imshow(lena[:,::-1]) #overturn plt.figure(3) plt.imshow(lena[:,:256]) #cut plt.figure(4) plt.imshow(lena[:lena.shape[0]/2,:lena.shape[1]/2]) #cut 2 plt.figure(5) mask=lena%2==0 #bool mask masked=lena.copy() masked[mask]=0 plt.imshow(masked) #mask plt.show()
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原文地址：http://blog.csdn.net/awsxsa/article/details/46363097
