i.fusion.brovey(1)

1i.fusion.brovey(1)            Grass User's Manual           i.fusion.brovey(1)
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NAME

6       i.fusion.brovey  - Brovey transform to merge multispectral and high-res
7       panchromatic channels
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KEYWORDS

10       raster, imagery, fusion
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SYNOPSIS

13       i.fusion.brovey
14       i.fusion.brovey help
15       i.fusion.brovey [-lqs] ms1=string ms2=string ms3=string pan=string out‐
16       putprefix=string  [--overwrite]  [--verbose]  [--quiet]
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18   Flags:
19       -l
20           sensor: LANDSAT
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22       -q
23           sensor: QuickBird
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25       -s
26           sensor: SPOT
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28       --overwrite
29           Allow output files to overwrite existing files
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31       --verbose
32           Verbose module output
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34       --quiet
35           Quiet module output
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37   Parameters:
38       ms1=string
39           raster input map (green: tm2 | qbird_green | spot1)
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41       ms2=string
42           raster input map (NIR: tm4 | qbird_nir | spot2)
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44       ms3=string
45           raster input map (MIR; tm5 | qbird_red | spot3)
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47       pan=string
48           raster input map (etmpan | qbird_pan | spotpan)
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50       outputprefix=string
51           raster output map prefix (e.g. 'brov')
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DESCRIPTION

54       i.fusion.brovey performs a Brovey transformation using three multispec‐
55       tral and the panchromatic satellite image  scene  channels.  Three  new
56       channels are calculated according to the formula:
57                                   DN_b1
58           DN_fused = ------------------------------- * DN_pan
59                           DN_b1 + DN_b2 + DN_b3
60        The assignment of the channels depends on the satellite.  The module's
61       help text (above) suggests for LANDSAT-7, QuickBird and SPOT.
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NOTES

64       The command changes temporarily to the high resolution of the  panchro‐
65       matic  channels  for  creating the three output channels, then restores
66       the previous  region  settings.  The  current  region  coordinates  are
67       respected. The three pan-sharpened output channels may be combined with
68       d.rgb or r.composite.
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REFERENCES

74                     Original Brovey formula reference unknown, probably
75                     Roller, N.E.G. and Cox, S., 1980. Comparison  of  Landsat
76                     MSS and merged MSS/RBV data for analysis of natural vege‐
77                     tation.  Proc. of the  14th  International  Symposium  on
78                     Remote  Sensing  of  Environment,  San  Jose, Costa Rica,
79                     23-30 April, pp. 1001-1007
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81                     Pohl, C., and J.L. van Genderen, 1998.  Multisensor image
82                     fusion  in remote sensing: concepts, methods and applica‐
83                     tion. Int. J. of Rem. Sens., 19, 823-854.
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85                     M. Neteler, D. Grasso, I. Michelazzi, L. Miori,  S.  Mer‐
86                     ler, and C.  Furlanello, 2005.  An integrated toolbox for
87                     image registration, fusion and classification.   Interna‐
88                     tional   Journal  of  Geoinformatics,  Special  Issue  on
89                     FOSS/GRASS 2004 & GIS-IDEAS 2004 (in press)
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AUTHOR

92       Markus Neteler, ITC-irst
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94       Last changed: $Date: 2005-03-02 15:51:25 +0100 (Wed, 02 Mar 2005) $
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96       Full index
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98       © 2003-2008 GRASS Development Team
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102GRASS 6.3.0                                                 i.fusion.brovey(1)