CODEWITHSUNDEEP
python-3.ximage-processingscikit-imagerandom-walk
Bilal
Bilal

Reputation: 3854

Random walker algorithm how a gray-level image can be 3D?

Parameters

data : array_like
    Image to be segmented in phases. Gray-level `data` can be two- or
    three-dimensional

My question is: what do they mean by 3D gray-level image?

Upvotes: 0

Views: 108

Answers (1)

Cris Luengo
Cris Luengo

Reputation: 60635

A 2D image is an image that is indexed by (x,y). A 3D image is an image that is indexed by (x,y,z).

A digital image samples the real world in some way. Photography produces a 2D projection of the 3D world, the digital photograph is a sampling of that projection. But other imaging modalities do not project, and can sample all three dimensions of the 3D world. For example:

Besides these, a 2D time-series (a movie) is sometimes also treated as a 3D image, applying algorithms that work on 3D images.

Upvotes: 2

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