Shell script for create batch HDR images using Luminance HDR cli

batch_hdr_creator.sh

#!/bin/bash

# OPTIONS number of group bracket shot and verbose

set -e

INPUT_DIR="$@"

if [ "$#" -ne 1 ]; then
    echo "Wrong usage"
    echo "Usage: move_bracket_shots_and_generate_tiff.sh <INPUT_DIR>"
    exit
fi

if [ ! -d $INPUT_DIR ]; then
    echo "The argument must be an directory"
    exit
fi

OUTPUT_DIR="$INPUT_DIR/exr"
HDR_EXTENSION=".exr"
mkdir -p $OUTPUT_DIR
BRACKET_IMAGES=3
IMAGES_DIR=$(ls -l $INPUT_DIR/*.tif| grep -v ^l | wc -l)

#checking if number of files is compatible
if [ $(( $IMAGES_DIR%$BRACKET_IMAGES )) -ne 0 ]; then
    echo "[HDR CREATOR] Number of inputs ($IMAGES_DIR) is not divisible by $BRACKET_IMAGES"
    echo "[HDR CREATOR] Exiting the program"
    exit
fi

declare -i i
i=0
temp=""
temp_debug=""
for filename in $INPUT_DIR/*.tif 
do
    temp_debug="$temp_debug${filename##*/} "
    temp="$temp ${filename}"

    i=i+1
    if [ $(( $i%$BRACKET_IMAGES )) -eq 0 ]; then
        filename=${temp_debug%% *}
        filename=${filename%%.tif}

        if [ -e $OUTPUT_DIR/$filename$HDR_EXTENSION ]; then
            echo "File already exists"
        else
            echo "[HDR CREATOR] Creating HDR for the following files"
            echo "[HDR CREATOR] $temp_debug"
            luminance-hdr-cli $temp --save $OUTPUT_DIR/$filename$HDR_EXTENSION -a AIS
            echo "[HDR CREATOR] output file: $OUTPUT_DIR/$filename$HDR_EXTENSION"
        fi

        temp=""
        temp_debug=""
    fi
done