skimage 0.17.2

ParametersReturnsBackRef
moments_central(image, center=None, order=3, **kwargs)

The center coordinates (cr, cc) can be calculated from the raw moments as: { M[1, 0] / M[0, 0] , M[0, 1] / M[0, 0] }.

Note that central moments are translation invariant but not scale and rotation invariant.

Parameters

image : nD double or uint8 array

Rasterized shape as image.

center : tuple of float, optional

Coordinates of the image centroid. This will be computed if it is not provided.

order : int, optional

The maximum order of moments computed.

Returns

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

Central image moments.

Calculate all central 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])
... moments_central(image, centroid) array([[16., 0., 20., 0.], [ 0., 0., 0., 0.], [20., 0., 25., 0.], [ 0., 0., 0., 0.]])
See :

Back References

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

skimage.measure._moments.moments_central

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File: /skimage/measure/_moments.py#194
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