NMI: Normalized mutual information (NMI).

In SPUTNIK: SPatially aUTomatic deNoising for Ims toolKit

Normalized mutual information (NMI).

Description

NMI returns the normalized mutual information between two ms.image objects. The normalized mutual information is calculated as the mutual information divided by square-root of the product of the entropies. This function makes use of the functions available in infotheo R package.

Usage

NMI(x, y, numBins = 256)

Arguments

x	numeric array. Image 1 color intensity array.
y	numeric array. Image 2 (binary mask).
numBins	numeric. Number of bins for discretizing the image colors.

Value

NMI value between 0 and 1.

Author(s)

Paolo Inglese [e-mail]

References

Meyer, P. E. (2009). Infotheo: information-theoretic measures. R package. Version, 1(0).

SPUTNIK documentation built on Nov. 24, 2022, 5:06 p.m.