compareImages: Assesses whether two textured images are the same texture.
In nunesmatt/LS2Wstat: A Multiscale Test of Spatial Stationarity for LS2W Processes

Description Usage Arguments Details Value Author(s) References See Also Examples

The function combines two images together, and then tests the montage for stationarity.

1	compareImages(Im1, Im2, testsize = min(nrow(Im1), nrow(Im2)), alpha=0.05,...)

`Im1`	The first image to be compared.
`Im2`	The second image to be compared.
`testsize`	The size of the combined image montage to be tested for stationarity.
`alpha`	The significance of the stationarity test.
`...`	Any other optional arguments to `TOS2D`.

An image montage of two images is created, and the homogeneity measure TOS2D is used in combination with getpval to assess stationarity of the montage. If the image is assessed as stationary, the two images are considered as the same texture.

montageres

A boolean value indicating whether the montage of Im1 and Im2 is stationary.

Sarah L. Taylor and Matt Nunes

Taylor, S.L., Eckley, I.A., and Nunes, M.A. (2014) A Test of Stationarity for Textured Images. Technometrics, 56 (3), 291-301.

TOS2D, countTextures

# create two images to be compared:
X1<-simTexture(32,K=1,imtype="S1")[[1]]
X2<-simTexture(32,K=1,imtype="S1", sd=1.6)[[1]]
                             
# use the test to compare them:

test<-compareImages(X1,X2,nsamples=100, smooth=FALSE)