binary_blobs(length=512, blob_size_fraction=0.1, n_dim=2, volume_fraction=0.5, seed=None)

Parameters

length : int, optional

Linear size of output image.

blob_size_fraction : float, optional

Typical linear size of blob, as a fraction of length , should be smaller than 1.

n_dim : int, optional

Number of dimensions of output image.

volume_fraction : float, default 0.5

Fraction of image pixels covered by the blobs (where the output is 1). Should be in [0, 1].

seed : int, optional

Seed to initialize the random number generator. If :None:None:`None`, a random seed from the operating system is used.

Returns

blobs : ndarray of bools

Output binary image

Generate synthetic binary image with several rounded blob-like objects.

Examples

This example is valid syntax, but we were not able to check execution

>>> from skimage import data
... data.binary_blobs(length=5, blob_size_fraction=0.2, seed=1)
array([[ True, False,  True,  True,  True],
       [ True,  True,  True, False,  True],
       [False,  True, False,  True,  True],
       [ True, False, False,  True,  True],
       [ True, False, False, False,  True]])

This example is valid syntax, but we were not able to check execution

>>> blobs = data.binary_blobs(length=256, blob_size_fraction=0.1)
... # Finer structures
... blobs = data.binary_blobs(length=256, blob_size_fraction=0.05)
... # Blobs cover a smaller volume fraction of the image
... blobs = data.binary_blobs(length=256, volume_fraction=0.3)

See :

Back References

The following pages refer to to this document either explicitly or contain code examples using this.

skimage.data._binary_blobs.binary_blobs

Local connectivity graph

Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.

Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)

SVG is more flexible but power hungry; and does not scale well to 50 + nodes.

All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them

---

File: /skimage/data/_binary_blobs.py#4
type: <class 'function'>
Commit: