按图像通道拼成行向量数据

import numpy as np a = np.array([[[1,2,3],[1,2,3]],[[1,2,3],[1,2,3]]]) print a.shape print a[:,:,0] #第1通道 print a[:,:,1] print a[:,:,2] a = a.reshape(-1,3) print a print a.shape a = a.T a = a.reshape(1,-1) print a print a.shape