fsl scale code example

Example: fsl scale

#!/bin/sh

if [ $# -lt 1 ] ; then
  echo "Usage: $0 <filename>" ;
  exit 1 ;
fi

img=$(remove_ext ${1})

min=$(fslstats ${img} -R | awk '{ print $1 }')
max=$(fslstats ${img} -R | awk '{ print $2 }')

scaling=$(echo "scale=5; 255.0 / ( $max - $min )" | bc)

fslmaths ${img} -sub ${min} -mul ${scaling} ${img}_scaled

# If you want all the values to be integers, then change 
# the odt (output datatype):
fslmaths ${img}_scaled ${img}_int_scaled -odt int