Compare GDAL Compression

compare.sh

#!/bin/bash

COMPRESSION=(zstd lzw deflate)

TRANSLATE_ARGS="-co NUM_THREADS=ALL_CPUS -co PREDICTOR=2"

CUID=$(id -u)
CGID=$(id -g)

# Run docker as the current user in the current diretory
function docker_gdal() {
    docker run \
        --user $CUID:$CGID \
        --volume $PWD:$PWD \
        --workdir $PWD \
        --rm \
        osgeo/gdal:ubuntu-small-latest $@
}

INPUT_FILES=`ls -1 input/*.tif`

mkdir -p output/

for inFile in $INPUT_FILES; do

    baseFileName=$(basename $inFile)
    echo "Processing $baseFileName " # $inFile ${baseFileName%.tif}
    for c in ${COMPRESSION[@]}; do

        echo "  Compressing $baseFileName into $c"
        docker_gdal gdal_translate $inFile -of COG -co COMPRESS=$c $TRANSLATE_ARGS output/${baseFileName%.tif}.$c.cog.tiff &> /dev/null
    done
done

echo "Done..."
echo