Non eight bit data not being strected correctly by the ossimScalarRemapper.

[dburken]

Found ossimScalarRemapper::getTile calling "stretchMinMax" on the input tile prior to "copyTileToNormalizedBuffer". The ossimImageData::stretchMinMax call was not resetting the input tiles min max data members; hence, the subsequent call to copyTileToNormalizedBuffer was stretching between the old min, max values causing a squashed range.

[dburken]

1) Took stretch to min max out of scalar remapper.

2) Added set of min, max from input in image data factory.

3) Added reset of min, max, null in stretchToMinMax method.

Files:

      ossim/src/ossim/imaging/ossimImageData.cpp
      ossim/src/ossim/imaging/ossimImageDataFactory.cpp
      ossim/src/ossim/imaging/ossimScalarRemapper.cpp