id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
2353,Sensor calibration,arb,warmerdam,"There needs to be a mechanism for handling sensor calibration.  For example a lot of satellite data is stored in 16-bit integers with an associated method of converting to floating-point physical units. The method might be a simple slope/intercept scaling factor, or there might be one for each band, or some bands might have dual-slope calibration, or there might be a look-up table, or ...

At the moment this information appears to be thrown away but maybe there is no standard way of representing it. However it would be nice if at least there were options, such as reading the integers, apply the calibration and work in floating point; or pass on the calibration to subsequent modules.

Take the example of reading a proprietary format, re-projecting it and writing out a standard format like GeoTIFF.  Calibration information needs to be either preserved in the output format or applied to the output data.
",defect,closed,normal,,GDAL_Raster,unspecified,normal,worksforme,,