MountDoom: A crude algorithm to remove boundary voxels and reduce the...
In ygu427/iSPREADR: imProved Spatial Regression Analysis for DTI Data in R

It takes an image arrary; removes boundary voxels within certain numbers of voxels.

1	MountDoom(img, minval=0, thickness=2)

`img`	An image presented as a 3D array.
`thickness`	The "thickness" of boundary, measured in number of voxels, to be removed.
`minval`	Any voxels with value less or equal to minval will be considered as the initial background.

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A mask file (0=background; 1=foreground) that can be used to remove boundary points.

Xing Qiu

1 2 3 4 5 6 7	mask1 <- MountDoom(img1) ## we can use multiplication to get the trimmed image img1b <- mask1*img1 ## A more aggressive boundary removal mask1b <- MountDoom(img1, thickness=3)