[GRASS-dev] [GRASS GIS] #2048: i.pansharpen limited to 8-bit imagery

[GRASS GIS]

#2048: i.pansharpen limited to 8-bit imagery
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 Reporter:  nikosa                                                     |       Owner:  grass-dev@…              
     Type:  defect                                                     |      Status:  new                      
 Priority:  normal                                                     |   Milestone:  7.0.0                    
Component:  Imagery                                                    |     Version:  svn-trunk                
 Keywords:  i.pansharpen, sharpening, fusion, brovey, ihs, pca, 8-bit  |    Platform:  Unspecified              
      Cpu:  All                                                        |  
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Comment(by nikosa):

 Replying to [comment:1 cmbarton]:
 > The question is whether the histogram matching code can handle
 resolutions of >8 bit.
 > And I guess I don't know. Have to make some modifications and see.

 Can we alter the manual somehow?  To show how it can be done (now) with
 >8-bit images?  I have already posted some example at
 [http://grasswiki.osgeo.org/wiki/IKONOS#Pan_Sharpening].


 > That said, the HIS pan sharpening only works with integers, because that
 is a limit of i.rgb.his and i.his.rgb. I don't know if they can handle
 integer ranges outside 0-255, however. You might give it a try to
 transform one of your images with one of these and see what it converts it
 to.

 I can/will try to check. First look in the manual of `i.rgb.his` does not
 mention anything about bit-depth(s).

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Ticket URL: <http://trac.osgeo.org/grass/ticket/2048#comment:3>
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