This looks like a 16 bits image.

Quick suggestion, the easiest thing to do is to preprocess this image and perform color correction upfront.

You can use qgis itself or gdal utilities (See this email: http://lists.osgeo.org/pipermail/gdal-dev/2012-March/032180.html)

Simone.

This looks like a 16 bits image.

Quick suggestion, the easiest thing to do is to preprocess this image and perform color correction upfront.

You can use QGIS itself or GDAL utilities (See this email: http://lists.osgeo.org/pipermail/gdal-dev/2012-March/032180.html)