=================================================================================
0. 좌표계 확인
=================================================================================
gdalinfo "C:\Users\ASUS\Desktop\UJDRN\UJDRN6320_ECW\UJDRN6320.ecw"


=================================================================================
1. 좌표변환
=================================================================================
// gdalwarp -of VRT -s_srs EPSG:5187 -t_srs EPSG:3857 input.ecw warped.vrt
gdalwarp -of VRT -s_srs EPSG:5187 -t_srs EPSG:3857 ^
-co "BLOCKXSIZE=256" ^
-co "BLOCKYSIZE=256" ^
"C:\Users\ASUS\Desktop\UJDRN\UJDRN6320_ECW\UJDRN6320.ecw" "C:\Users\ASUS\Desktop\UJDRN\UJDRN6320_ECW\UJDRN6320.vrt"


=================================================================================
2. 밴드조정
=================================================================================
// gdal_translate -of VRT -b 1 -b 2 -b 3 -ot Byte warped.vrt final_input.vrt
gdal_translate -of VRT -b 1 -b 2 -b 3 -ot Byte "C:\Users\ASUS\Desktop\UJDRN\UJDRN6320_ECW\UJDRN6320.vrt" "C:\Users\ASUS\Desktop\UJDRN\UJDRN6320_ECW\UJDRN6320_byte.vrt"

// vrt파일 검토
gdalinfo "C:\Users\ASUS\Desktop\UJDRN\UJDRN6320_ECW\UJDRN6320_byte.vrt"


=================================================================================
3. 타일생성
=================================================================================
// gdal2tiles --processes=4 -z 15-22 -w openlayers final_input.vrt ./tms_output
set GDAL_CACHEMAX=16384
gdal2tiles --processes=4 ^
  -z 16-21 ^
  -w openlayers ^
  --tmscompatible ^
  --tiledriver=JPEG ^
  "C:\Users\ASUS\Desktop\UJDRN\UJDRN6320_ECW\UJDRN6320_byte.vrt" "C:\Users\ASUS\Desktop\UJDRN\UJDRN6320"