moments(image, order=3)

The following properties can be calculated from raw image moments:

• Area as: M[0, 0] .

• Centroid as: { M[1, 0] / M[0, 0] , M[0, 1] / M[0, 0] }.

Note that raw moments are neither translation, scale nor rotation invariant.

Parameters

image : nD double or uint8 array

Rasterized shape as image.

order : int, optional

Maximum order of moments. Default is 3.

Returns

m : (``order + 1``, ``order + 1``) array

Raw image moments.

Calculate all raw image moments up to a certain order.

Examples

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

>>> image = np.zeros((20, 20), dtype=np.double)
... image[13:17, 13:17] = 1
... M = moments(image)
... centroid = (M[1, 0] / M[0, 0], M[0, 1] / M[0, 0])
... centroid
(14.5, 14.5)

See :

Back References

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

skimage.measure._moments.moments

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/measure/_moments.py#149
type: <class 'function'>
Commit: