45.5GB TIF 파일

1. 5187에서 3857로 좌표변환
  - 13분 52초

2. jpg로 결과만들기
  - 8분 23초

3. tile용량
  - 187mb

4. 사용옵션

```
gdalwarp -overwrite -s_srs EPSG:5187 -t_srs EPSG:3857 -srcnodata "255 255 255" -dstnodata "255 255 255" -r near -of GTiff "%INPUT_TIF%" "%OUTPUT_TIF%"
```
```
python "%GDAL2TILES_PY%" -r near -z 16-21 -s EPSG:3857 -w openlayers --excluded-values "0,245,246,247,248,249,250,251,252,253,254,255" --excluded-values-pct-threshold 5 --tmscompatible --tiledriver=JPEG "%OUTPUT_TIF%" "%TILE_DIR%"
```