Scale (ome_zarr.scale
)
Module for downsampling numpy arrays via various methods.
See the Scaler
class for details.
- class ome_zarr.scale.Scaler(copy_metadata: bool = False, downscale: int = 2, in_place: bool = False, labeled: bool = False, max_layer: int = 4, method: str = 'nearest')
Helper class for performing various types of downsampling.
A method can be chosen by name such as “nearest”. All methods on this that do not begin with “_” and not either “methods” or “scale” are valid choices. These values can be returned by the
methods()
method.>>> import numpy as np >>> data = np.zeros((1, 1, 1, 64, 64)) >>> scaler = Scaler() >>> downsampling = scaler.nearest(data) >>> for x in downsampling: ... print(x.shape) (1, 1, 1, 64, 64) (1, 1, 1, 32, 32) (1, 1, 1, 16, 16) (1, 1, 1, 8, 8) (1, 1, 1, 4, 4)
- local_mean(base: ndarray) List[ndarray]
Downsample using
skimage.transform.downscale_local_mean()
.
- static methods() Iterator[str]
Return the name of all methods which define a downsampling.
Any of the returned values can be used as the methods argument to the
Scaler constructor