opt_flow.sh

#!/bin/bash
# Specify the path to the optical flow utility here.
# Also check line 44 and 47 whether the arguments are in the correct order.
flowCommandLine="bash run-OF-RGB.sh"

if [ -z "$flowCommandLine" ]; then
  echo "Please open opt_flow.sh and specify the command line for computing the optical flow."
  exit 1
fi

if [ ! -f ./consistencyChecker/consistencyChecker ]; then
  if [ ! -f ./consistencyChecker/Makefile ]; then
    echo "Consistency checker makefile not found."
    exit 1
  fi
  cd consistencyChecker/
  make
  cd ..
fi

filePattern=$1
folderName=$2
startFrame=${3:-1}
stepSize=${4:-1}

if [ "$#" -le 1 ]; then
   echo "Usage: ./opt_flow.sh <filePattern> <outputFolder> [<startNumber> [<stepSize>]]"
   echo -e "\tfilePattern:\tFilename pattern of the frames of the videos."
   echo -e "\toutputFolder:\tOutput folder."
   echo -e "\tstartNumber:\tThe index of the first frame. Default: 1"
   echo -e "\tstepSize k:\tProcess every k frame. (For parallel processing) Default: 1"
   exit 1
fi

i=$[$startFrame]
j=$[$startFrame + 1]

mkdir -p "${folderName}"

while true; do
  file1=$(printf "$filePattern" "$i")
  file2=$(printf "$filePattern" "$j")
  if [ -a $file2 ]; then
    if [ ! -f ${folderName}/forward_${i}_${j}.flo ]; then
      eval $flowCommandLine "$file1" "$file2" "${folderName}/forward_${i}_${j}.flo"
    fi
    if [ ! -f ${folderName}/backward_${j}_${i}.flo ]; then
      eval $flowCommandLine "$file2" "$file1" "${folderName}/backward_${j}_${i}.flo"
    fi
    ./consistencyChecker/consistencyChecker "${folderName}/backward_${j}_${i}.flo" "${folderName}/forward_${i}_${j}.flo" "${folderName}/reliable_${j}_${i}.pgm"
    ./consistencyChecker/consistencyChecker "${folderName}/forward_${i}_${j}.flo" "${folderName}/backward_${j}_${i}.flo" "${folderName}/reliable_${i}_${j}.pgm"
    echo "Finish Processing flow between ${i} and ${j}"
  else
    break
  fi
  i=$[$i + $stepSize]
  j=$[$j + $stepSize]
done