geotiff gdal merged and tiles

gdal frameworks 사용..

여러개의 tiff파일

1. virtual raster dataset 생성.

Build a virtual raster dataset from the different raster maps. This can be done using gdalbuildvrt (part of gdal). The output is a ‘virtual raster’ (.vrt).

2. 한개의 tiff파일로 merge

Merge the files into one file by gdalwarp or by gdal_merge.py and then render tiles from that one.

3. tile파일 생성.

Then merge the different sets of map tiles (tile tree merge) using gdal2tiles.py with the “-r antialias” option.

참고: 

http://www.gdal.org/gdal_utilities.html

http://pvanb.wordpress.com/2012/07/07/multiple_rasters2google_earth/