Nothing
options(RNiftyReg.threads=2L)
if (system.file(package="loder") == "") {
warning("The \"loder\" package is not available")
} else {
house <- loder::readPng(system.file("extdata","house.png",package="RNiftyReg"))
affine <- buildAffine(skews=0.1, source=house, target=house)
skewedHouse <- applyTransform(affine, house)
colourHouse <- loder::readPng(system.file("extdata","house_colour.png",package="RNiftyReg"))
skewedColourHouse <- applyTransform(affine, colourHouse)
# Rec. 709 luma RGB-to-greyscale coefficients (as used by ImageMagick)
expect_equal(skewedHouse[66,76], weighted.mean(skewedColourHouse[66,76,],c(0.2126,0.7152,0.0722)), tolerance=0.05)
if (tolower(Sys.info()[["sysname"]]) != "sunos") {
reg <- niftyreg(skewedColourHouse, house, symmetric=FALSE)
expect_equal(forward(reg)[1,2], 0.1, tolerance=0.05)
if (at_home()) {
reg <- niftyreg(skewedColourHouse, house, scope="nonlinear", init=forward(reg), symmetric=FALSE, maxIterations=300)
expect_equal(dim(forward(reg)), c(40L,56L,1L,1L,2L))
}
}
}
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