src/Main.hs

   1 module Main
   2 where
   3
   4 import Data.Array.Repa (
   5   DIM2,
   6   DIM3,
   7   Z(..),
   8   (:.)(..),
   9   slice,
  10   reshape,
  11   Any(..),
  12   All(..)
  13   )
  14 import qualified Data.Array.Repa as R (map)
  15
  16 import Data.Array.Repa.IO.BMP (writeComponentsToBMP)
  17 import Data.Word
  18 import System.Environment (getArgs)
  19
  20 import Grid (make_grid, zoom)
  21 import MRI
  22 import Values (read_values_3d, write_values_1d)
  23
  24 mri_shape2d :: DIM2
  25 mri_shape2d = (Z :. 256*2 :. 256*2)
  26
  27 mri_shape3d :: DIM3
  28 mri_shape3d = (Z :. 256 :. 256 :. 1)
  29
  30 main :: IO ()
  31 main = do
  32 --  args <- getArgs
  33 --  let color = head args
  34 --  let in_file  = "./data/MRbrain.40." ++ color
  35   let out_file = "MRbrain.50.red.out"
  36   arr <- read_word16s
  37   let arrBrack = bracket_array arr
  38   let arrInv   = flip_x $ flip_y arrBrack
  39   let arrSlice = slice arrInv (Any :. (50 :: Int) :. All :. All)
  40   let arrColor = raw_data_to_color arrSlice
  41
  42   let arrColor' = reshape mri_shape3d arrColor
  43   let rdata = red_dbl_data arrColor'
  44   let gdata = green_dbl_data arrColor'
  45   let bdata = blue_dbl_data arrColor'
  46
  47 --  mridata <- read_values_3d mri_shape in_file
  48
  49   let gr = make_grid 1 rdata
  50   let routput = zoom gr (2,2,1)
  51
  52   let gg = make_grid 1 gdata
  53   let goutput = zoom gg (2,2,1)
  54
  55   let gb = make_grid 1 bdata
  56   let boutput = zoom gb (2,2,1)
  57
  58   let routput' = R.map double_to_word8 (reshape mri_shape2d routput)
  59   let goutput' = R.map double_to_word8 (reshape mri_shape2d goutput)
  60   let boutput' = R.map double_to_word8 (reshape mri_shape2d boutput)
  61
  62 --  write_values_1d output out_file
  63   writeComponentsToBMP out_file routput' goutput' boutput'
  64   where
  65     double_to_word8 :: Double -> Word8
  66     double_to_word8 x =
  67       if x > 255 then
  68         255 :: Word8
  69       else
  70         if x < 0 then
  71           0 :: Word8
  72         else
  73           fromIntegral $ truncate x