paddle tensor 转 numpy

# img21 是array 数组  矩阵   转成tensor
img2 = paddle.to_tensor(img21)  #()很重要
print(img2)

# 将tensor 转换成numpy
img3 = img2.numpy()
print("img3  : ", img3)

输出结果： 

# tensor 数据
Tensor(shape=[48, 40, 3], dtype=uint8, place=Place(gpu:0), stop_gradient=True,
       [[[24, 24, 24],
         [25, 25, 25],
         [25, 25, 25],
         ...,
         [23, 23, 23],
         [22, 22, 22],
         [20, 20, 20]],

        [[22, 22, 22],
         [24, 24, 24],
         [23, 23, 23],
         ...,
         [19, 19, 19],
         [21, 21, 21],
         [21, 21, 21]],

        [[23, 23, 23],
         [23, 23, 23],
         [23, 23, 23],
         ...,
         [19, 19, 19],
         [22, 22, 22],
         [20, 20, 20]],

        ...,

        [[21, 21, 21],
         [19, 19, 19],
         [19, 19, 19],
         ...,
         [21, 21, 21],
         [19, 19, 19],
         [18, 18, 18]],

        [[19, 19, 19],
         [19, 19, 19],
         [17, 17, 17],
         ...,
         [20, 20, 20],
         [19, 19, 19],
         [19, 19, 19]],

        [[20, 20, 20],
         [19, 19, 19],
         [18, 18, 18],
         ...,
         [19, 19, 19],
         [20, 20, 20],
         [19, 19, 19]]])

# numpy数据
#
img3  :  [[[24 24 24]
  [25 25 25]
  [25 25 25]
  ...
  [23 23 23]
  [22 22 22]
  [20 20 20]]

 [[22 22 22]
  [24 24 24]
  [23 23 23]
  ...
  [19 19 19]
  [21 21 21]
  [21 21 21]]

 [[23 23 23]
  [23 23 23]
  [23 23 23]
  ...
  [19 19 19]
  [22 22 22]
  [20 20 20]]

 ...

 [[21 21 21]
  [19 19 19]
  [19 19 19]
  ...
  [21 21 21]
  [19 19 19]
  [18 18 18]]

 [[19 19 19]
  [19 19 19]
  [17 17 17]
  ...
  [20 20 20]
  [19 19 19]
  [19 19 19]]

 [[20 20 20]
  [19 19 19]
  [18 18 18]
  ...
  [19 19 19]
  [20 20 20]
  [19 19 19]]]