Using Python 3.7, dask 2.0, (from conda-forge) and NumPy 1.17.0rc1 (from pip):
import numpy as np
import dask.array as da
image = da.from_array(np.array([[0, 1], [1, 2]]), chunks=(1, 2))
image_min = int(np.min(image))
results in:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<__array_function__ internals>", line 6, in amin
TypeError: no implementation found for 'numpy.amin' on types that implement __array_function__: [<class 'dask.array.core.Array'>]