Remove observations from the exterior of interior of a breech face scan

preProcess_crop(x3p, region = "exterior", offset = 0, ...)

Arguments

x3p: an x3p object containing the surface matrix of a cartridge case scan
region: dictates whether the observations on the "exterior" or "interior" of the scan are removed
offset: an integer (positive or negative) value to add to the estimated radius of the associated region

Value

An x3p object containing the surface matrix of a breech face impression scan where the observations on the exterior/interior of the breech face scan surface.

Examples


#Process fadul1.1 "from scratch" (takes > 5 seconds to run)
if (FALSE) {
nbtrd_link <- "https://tsapps.nist.gov/NRBTD/Studies/CartridgeMeasurement/"
fadul1.1_link <- "DownloadMeasurement/2d9cc51f-6f66-40a0-973a-a9292dbee36d"

fadul1.1 <- x3ptools::read_x3p(paste0(nbtrd_link,fadul1.1_link))

fadul1.1_extCropped <- preProcess_crop(x3p = fadul1.1,
                                       radiusOffset = -30,
                                       region = "exterior")

fadul1.1_extIntCropped <- preProcess_crop(x3p = fadul1.1_extCropped,
                                          radiusOffset = 200,
                                          region = "interior")

x3pListPlot(list("Original" = fadul1.1,
                 "Exterior Cropped" = fadul1.1_extCropped,
                 "Exterior & Interior Cropped" = fadul1.1_extIntCropped ))
}