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LBurford R Script for Augmentation #50

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LBurford R Script for Augmentation #50

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Lolly6580 Nov 7, 2016
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LBurford R Script for Augmentation
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47 changes: 47 additions & 0 deletions R/605.R
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require(imager)

##function input: a character vector of image names in the format "Rudolph_Giuliani_0022.jpg"
##function output: a character vector of image names including original images and new images
##function creates 10 additional images for each input image and saves the new images to the
##same file location as the original images
augfunction <- function(imagesin){
imagesnew <- character(10)
imagesout <- imagesin
for(i in 1:length(imagesin)){
im <- load.image(imagesin[i])
im.blurry <- isoblur(im,10)
imager::save.image(im.blurry,paste("Blurry_",imagesin[i],sep=""))
imagesnew[1] <- paste("Blurry_",imagesin[i],sep="")
im.xedges <- deriche(im,2,order=2,axis="x")
imager::save.image(im.xedges,paste("X_Edges_",imagesin[i],sep=""))
imagesnew[2] <- paste("X_Edges_",imagesin[i],sep="")
im.yedges <- deriche(im,2,order=2,axis="y")
imager::save.image(im.yedges,paste("Y_Edges_",imagesin[i],sep=""))
imagesnew[3] <- paste("Y_Edges_",imagesin[i],sep="")
im.rotate90 <- imrotate(im,90)
imager::save.image(im.rotate90,paste("Rotate_90_",imagesin[i],sep=""))
imagesnew[4] <- paste("Rotate_90_",imagesin[i],sep="")
im.rotate180 <- imrotate(im,180)
imager::save.image(im.rotate180,paste("Rotate_180_",imagesin[i],sep=""))
imagesnew[5] <- paste("Rotate_180_",imagesin[i],sep="")
im.xmirror <- mirror(im,"x")
imager::save.image(im.xmirror,paste("X_Mirror_",imagesin[i],sep=""))
imagesnew[6] <- paste("X_Mirror_",imagesin[i],sep="")
im.ymirror <- mirror(im,"y")
imager::save.image(im.ymirror,paste("Y_Mirror_",imagesin[i],sep=""))
imagesnew[7] <- paste("Y_Mirror_",imagesin[i],sep="")
im.nshift <- imshift(im,100,100,boundary=1)
imager::save.image(im.nshift,paste("Neumann_Shift_",imagesin[i],sep=""))
imagesnew[8] <- paste("Neumann_Shift_",imagesin[i],sep="")
im.cshift <- imshift(im,100,100,boundary=2)
imager::save.image(im.cshift,paste("Circular_Shift_",imagesin[i],sep=""))
imagesnew[9] <- paste("Circular_Shift_",imagesin[i],sep="")
map.shift <- function(x,y) list(x=x+10,y=y+30)
im.warp <- imwarp(im,map=map.shift)
imager::save.image(im.warp,paste("Warp_",imagesin[i],sep=""))
imagesnew[10] <- paste("Warp_",imagesin[i],sep="")
imagesout <- append(imagesout, imagesnew, after = length(imagesout))
}

return(imagesout)
}