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

[GRASS GIS]

#2048: i.pansharpen limited to 8-bit imagery
-------------------------+-------------------------------------------------
  Reporter:  Nikos       |      Owner:  grass-dev@…
  Alexandris             |
      Type:  defect      |     Status:  new
  Priority:  normal      |  Milestone:  7.6.1
 Component:  Imagery     |    Version:  svn-trunk
Resolution:              |   Keywords:  i.pansharpen, sharpening, fusion,
                         |  brovey, ihs, pca, 8-bit
       CPU:  All         |   Platform:  Unspecified
-------------------------+-------------------------------------------------

Comment (by Nikos Alexandris):

 Update(d) with latest
 https://trac.osgeo.org/grass/attachment/ticket/2048/i.pansharpen.py and
 repeat for PCA. Here https://i.imgur.com/lkEoBRw.png, I think it is still
 not what we should expect color-wise. If someone else sees the same fuzzy
 colors, maybe we should go again through the steps for the PCA method.

 {{{
 # process
 i.pansharpen pan=B8 red=B4 green=B5 blue=B1 bitdepth=16 output=pan_pca
 method=pca --o

 # in & out
 for RASTER in $(echo B8 B4 B5 B1 $(glr pattern=pan_pca*)) ;do echo $RASTER
 ;r.info -gr $RASTER ;echo ;done

 B8
 north=4423507.5
 south=4188892.5
 east=704707.5
 west=474292.5
 nsres=15
 ewres=15
 rows=15641
 cols=15361
 cells=240261401
 datatype=CELL
 ncats=0
 min=0
 max=65535

 B4
 north=4423515
 south=4188885
 east=704715
 west=474285
 nsres=30
 ewres=30
 rows=7821
 cols=7681
 cells=60073101
 datatype=CELL
 ncats=0
 min=0
 max=65535

 B5
 north=4423515
 south=4188885
 east=704715
 west=474285
 nsres=30
 ewres=30
 rows=7821
 cols=7681
 cells=60073101
 datatype=CELL
 ncats=0
 min=0
 max=65535

 B1
 north=4423515
 south=4188885
 east=704715
 west=474285
 nsres=30
 ewres=30
 rows=7821
 cols=7681
 cells=60073101
 datatype=CELL
 ncats=0
 min=0
 max=65535

 pan_pca_blue
 north=4315237.5
 south=4302412.5
 east=524647.5
 west=512302.5
 nsres=15
 ewres=15
 rows=855
 cols=823
 cells=703665
 datatype=DCELL
 ncats=0
 min=37.4635679507703
 max=73.8477809701631

 pan_pca_green
 north=4315237.5
 south=4302412.5
 east=524647.5
 west=512302.5
 nsres=15
 ewres=15
 rows=855
 cols=823
 cells=703665
 datatype=DCELL
 ncats=0
 min=-60.815057189378
 max=71.127075165179

 pan_pca_red
 north=4315237.5
 south=4302412.5
 east=524647.5
 west=512302.5
 nsres=15
 ewres=15
 rows=855
 cols=823
 cells=703665
 datatype=DCELL
 ncats=0
 min=20.3850355262278
 max=72.9376049039095
 }}}

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/2048#comment:44>
GRASS GIS <https://grass.osgeo.org>