Python list以及numpy處理技巧

1.numpy數組后面添加一個list:

import numpy as np
a=[[1,2,3],[4,5,6],[7,8,9]]
box=np.array(a)
box=np.vstack((box,[10,11,12]))
x1=box[:,0]

print(box)

2.PIL庫，讀入灰度圖二進制數據轉為RGB：

imagePil = Image.frombytes('L', (originalImageWidth,originalImageHeight), imageSerialized).convert('RGB')