Denoise an image — denoiseImage • ANTsR

Denoise an image using a spatially adaptive filter originally described in J. V. Manjon, P. Coupe, Luis Marti-Bonmati, D. L. Collins, and M. Robles. Adaptive Non-Local Means Denoising of MR Images With Spatially Varying Noise Levels, Journal of Magnetic Resonance Imaging, 31:192-203, June 2010.

denoiseImage(
  img,
  mask,
  shrinkFactor = 1,
  p = 1,
  r = 3,
  noiseModel = c("Rician", "Gaussian"),
  verbose = FALSE
)

Arguments

img: scalar image to denoise.
mask: optional to limit the denoise region.
shrinkFactor: downsampling level performed within the algorithm.
p: patch radius for local sample. can be a vector.
r: search radius from which to choose extra local samples. can be a vector.
noiseModel: either Rician or Gaussian.
verbose: boolean

Value

antsImage denoised version of image

Author

N Tustison, B Avants

Examples


img <- antsImageRead(getANTsRData("rand")) %>% resampleImage(c(32, 32))
dimg <- denoiseImage(img, img * 0 + 1)
dimg2 <- denoiseImage(img)