src/Main.hs

   1 module Main
   2 where
   3
   4 import qualified Data.Array.Repa as R
   5 import System.Environment (getArgs)
   6
   7 import Grid (zoom)
   8 import MRI (
   9   flip_x,
  10   flip_y,
  11   mri_shape,
  12   mri_slice3d,
  13   read_word16s,
  14   round_array,
  15   swap_bytes,
  16   write_values_slice_to_bitmap,
  17   write_word16s,
  18   z_slice
  19   )
  20
  21 in_file :: FilePath
  22 in_file = "./data/mri.bin"
  23
  24
  25 main :: IO ()
  26 main = main3d
  27
  28 main3d :: IO ()
  29 main3d = do
  30   (s:_) <- getArgs
  31   let scale = read s :: Int
  32   let zoom_factor = (scale, scale, scale)
  33   let out_file = "output.bin"
  34   arr <- read_word16s in_file
  35   let arr'          = swap_bytes arr
  36   let arrMRI        = R.reshape mri_shape arr'
  37   dbl_data <- R.computeUnboxedP $ R.map fromIntegral arrMRI
  38   output <- zoom dbl_data zoom_factor
  39   word16_output <- R.computeUnboxedP $ round_array output
  40   write_word16s out_file word16_output
  41   return ()
  42
  43
  44 main2d :: IO ()
  45 main2d = do
  46   (s:_) <- getArgs
  47   let scale = read s :: Int
  48   let zoom_factor = (1, scale, scale)
  49   let out_file = "output.bmp"
  50   arr <- read_word16s in_file
  51   arrSlice <- R.computeUnboxedP $ z_slice 50 $ flip_x $ flip_y $ swap_bytes arr
  52   let arrSlice' = R.reshape mri_slice3d arrSlice
  53
  54   -- If zoom isn't being inlined we need to extract the slice before hand,
  55   -- and convert it to the require formed.
  56   dbl_data      <- R.computeUnboxedP $ R.map fromIntegral arrSlice'
  57   output        <- zoom dbl_data zoom_factor
  58   arrSlice0     <- R.computeUnboxedP $ z_slice 0 output
  59
  60   write_values_slice_to_bitmap arrSlice0 out_file