如何将Slic中的labels保存成（int32或者uint32）图像

In [1]:  from skimage import data,segmentation

In [2]:  from skimage.future import graph

In [3]: import matplotlib.pyplot as plt

In [4]: img = data.astronaut()

In [5]: labels = segmentation.slic(img,n_segments = 1000)

In [6]: plt.imshow(labels);plt.show()

In [7]: print(labels.dtype)
int64

In [8]: from skimage.external.tifffile import imsave

In [9]: import numpy as np

In [10]: labels.astype(np.int32)
Out[10]:
array([[  0,   0,   0, ...,  32,  32,  32],
       [  0,   0,   0, ...,  32,  32,  32],
       [  0,   0,   0, ...,  32,  32,  32],
       ...,
       [787, 787, 787, ..., 746, 746, 746],
       [787, 787, 787, ..., 746, 746, 746],
       [787, 787, 787, ..., 746, 746, 746]])

In [12]: print(labels.dtype)
int64

In [13]: label = labels.astype(np.int32)

In [14]: print(label.dtype)
int32
		# 保存int32的图像
In [16]: imsave("superpixel.tif",label)

附上合并处理的结果：