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Welcome to the dans-gdal-scripts wiki! Feel free to help contribute.

Gdal-contrast-stretch -Contrast stretch and conversion from 16-bit to 8-bit

gdal_dem2rgb - Generate hillshaded images from DEMs

gdal_get_projected_bounds - Project a polygon and return its bounding rectangle

gdal_landsat_pansharp - Pansharpening - works best for Landsat 7 images

gdal_list_corners - Prints raster geocode information in YAML format (similar to gdalinfo but gives YAML)

gdal_merge_simple - Merge individual bands into a single GeoTIFF image (8-bit only)

gdal_merge_vrt - Merge individual bands into a single VRT image

gdal_raw2geotiff - Convert raw binary files into GeoTIFFs

gdal_trace_outline - Trace the outline of an image and generate WKT or Shapefile (options exist for cleaning up raggedy edges, can also do feature classification)

gdal_wkt_to_mask - Generate a bitmap of the area covered by a polygon