[GRASS-user] unexpected i.pansharpen results

[Nikos Alexandris]

Nikos Alexandris wrote:

[chewed up message by the "System" :D]


# 4)  i.pansharpen -- all of them, three methods -- from my history

### Brovey

   18  31.Jul.13 [ 15:54:36 ] i.pansharpen sharpen=brovey pan=Pan_Radiance 
ms1=Blue_Radiance ms2=Green_Radiance ms3=Red_Radiance 
output=sharp_brovey_Radiance

   19  31.Jul.13 [ 15:54:46 ] i.pansharpen sharpen=brovey pan=Pan_ToAR 
ms1=Blue_ToAR 
ms2=Green_ToAR ms3=Red_ToAR output=sharp_brovey_ToAR

   24  31.Jul.13 [ 15:59:16 ] i.pansharpen sharpen=brovey pan=Pan_DNs 
ms1=Blue_DNs 
ms2=Green_DNs ms3=Red_DNs output=sharp_brovey_DNs


### PCA

   59  31.Jul.13 [ 16:09:53 ] i.pansharpen sharpen=pca pan=Pan_DNs 
ms1=Blue_DNs 
ms2=Green_DNs ms3=Red_DNs output=sharp_pca_DNs

   60  31.Jul.13 [ 16:22:03 ] i.pansharpen sharpen=pca pan=Pan_Radiance 
ms1=Blue_Radiance 
ms2=Green_Radiance ms3=Red_Radiance output=sharp_pca_Radiance

   61  31.Jul.13 [ 16:27:28 ] i.pansharpen sharpen=pca pan=Pan_ToAR 
ms1=Blue_ToAR 
ms2=Green_ToAR ms3=Red_ToAR output=sharp_pca_ToAR


### IHS

   62  31.Jul.13 [ 16:35:12 ] i.pansharpen sharpen=ihs pan=Pan_ToAR 
ms1=Blue_ToAR 
ms2=Green_ToAR ms3=Red_ToAR output=sharp_ihs_ToAR

   63  31.Jul.13 [ 16:37:21 ] i.pansharpen sharpen=ihs pan=Pan_Radiance 
ms1=Blue_Radiance 
ms2=Green_Radiance ms3=Red_Radiance output=sharp_ihs_Radiance

   64  31.Jul.13 [ 16:39:32 ] i.pansharpen sharpen=ihs pan=Pan_DNs 
ms1=Blue_DNs 
ms2=Green_DNs ms3=Red_DNs output=sharp_ihs_DNs



# 5) Let's look at the numbers

for SHARP in `g.mlist rast pat=sharp*`; do r.info -mr ${SHARP}; done

min=36.2130177514793
max=153
title= (sharp_brovey_DNs_blue)

min=0
max=112.211538461538
title= (sharp_brovey_DNs_green)

min=0
max=107.968559837728
title= (sharp_brovey_DNs_red)

min=7.93864844473524
max=102.4232751775
title= (sharp_brovey_Radiance_blue)

min=0
max=87.5889521289036
title= (sharp_brovey_Radiance_green)

min=0
max=74.435557812593
title= (sharp_brovey_Radiance_red)

min=0
max=0.398724812575096
title= (sharp_brovey_ToAR_blue)

min=0
max=0.335289700449259
title= (sharp_brovey_ToAR_green)

min=0
max=0.476377949923749
title= (sharp_brovey_ToAR_red)

min=0
max=255
title=Image blue (sharp_ihs_DNs_blue)

min=0
max=255
title=Image green (sharp_ihs_DNs_green)

min=0
max=255
title=Image red (sharp_ihs_DNs_red)

min=0
max=255
title=Image blue (sharp_ihs_Radiance_blue)

min=0
max=254
title=Image green (sharp_ihs_Radiance_green)

min=0
max=254
title=Image red (sharp_ihs_Radiance_red)

min=0
max=2
title=Image blue (sharp_ihs_ToAR_blue)

min=0
max=2
title=Image green (sharp_ihs_ToAR_green)

min=0
max=2
title=Image red (sharp_ihs_ToAR_red)

min=177.072681268903
max=490.188522572706
title= (sharp_pca_DNs_blue)

min=174.855236596567
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