1imagery_graphical(1)        GRASS GIS User's Manual       imagery_graphical(1)
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Graphical index of GRASS GIS modules

14       Go to imagery introduction | topics
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16   Imagery modules:
17           •   i.albedo Computes broad band albedo from surface reflectance.
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19           •   i.aster.toar   Calculates   Top   of   Atmosphere  Radiance/Re‐
20               flectance/Brightness Temperature from ASTER DN.
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22           •   i.atcorr Performs atmospheric correction  using  the  6S  algo‐
23               rithm.
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26           •   i.band.library Prints available semantic label information used
27               for multispectral data.
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29           •   i.biomass Computes biomass growth, precursor of crop yield cal‐
30               culation.
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32           •   i.cca  Canonical  components  analysis  (CCA) program for image
33               processing.
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35           •   i.cluster Generates spectral signatures for land cover types in
36               an image using a clustering algorithm.
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39           •   i.colors.enhance  Performs auto-balancing of colors for RGB im‐
40               ages.
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42           •   i.eb.eta Actual evapotranspiration for diurnal  period  (Basti‐
43               aanssen, 1995).
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45           •   i.eb.evapfr  Computes  evaporative  fraction and root zone soil
46               moisture.
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48           •   i.eb.hsebal01 Computes sensible heat flux iteration SEBAL 01.
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50           •   i.eb.netrad Net radiation approximation (Bastiaanssen, 1995).
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52           •   i.eb.soilheatflux Soil heat flux  approximation  (Bastiaanssen,
53               1995).
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55           •   i.emissivity  Computes emissivity from NDVI, generic method for
56               sparse land.
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58           •   i.evapo.mh Computes evapotranspiration calculation modified  or
59               original Hargreaves formulation, 2001.
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61           •   i.evapo.pm  Computes  potential  evapotranspiration calculation
62               with hourly Penman-Monteith.
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64           •   i.evapo.pt Computes  evapotranspiration  calculation  Priestley
65               and Taylor formulation, 1972.
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67           •   i.evapo.time  Computes temporal integration of satellite ET ac‐
68               tual (ETa) following the daily ET reference (ETo) from meteoro‐
69               logical station(s).
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71           •   i.fft Fast Fourier Transform (FFT) for image processing.
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73           •   i.gensig Generates statistics for i.maxlik from raster map.
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75           •   i.gensigset Generates statistics for i.smap from raster map.
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77           •   i.group Creates, edits, and lists groups of imagery data.
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79           •   i.his.rgb  Transforms raster maps from HIS (Hue-Intensity-Satu‐
80               ration) color space to RGB (Red-Green-Blue) color space.
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82           •   i.ifft Inverse Fast Fourier Transform (IFFT) for image process‐
83               ing.
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85           •   i.image.mosaic Mosaics several images and extends colormap.
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87           •   i.in.spotvgt Imports SPOT VGT NDVI data into a raster map.
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89           •   i.landsat.acca  Performs  Landsat TM/ETM+ Automatic Cloud Cover
90               Assessment (ACCA).
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92           •   i.landsat.toar Calculates  top-of-atmosphere  radiance  or  re‐
93               flectance and temperature for Landsat MSS/TM/ETM+/OLI
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95           •   i.maxlik  Classifies  the cell spectral reflectances in imagery
96               data.
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99           •   i.modis.qc Extracts quality control parameters  from  MODIS  QC
100               layers.
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102           •   i.oif Calculates Optimum-Index-Factor table for spectral bands
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104           •   i.ortho.camera  Select and modify the imagery group camera ref‐
105               erence file.
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107           •   i.ortho.elev Select or modify the target elevation model.
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109           •   i.ortho.init Interactively creates or  modifies  entries  in  a
110               camera  initial  exposure station file for imagery group refer‐
111               enced by a sub-block.
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113           •   i.ortho.photo Menu driver for the photo imagery programs.
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115           •   i.ortho.rectify Orthorectifies an image by using the  image  to
116               photo coordinate transformation matrix.
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118           •   i.ortho.target Select or modify the imagery group target.
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120           •   i.ortho.transform Computes a coordinate transformation based on
121               the control points.
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123           •   i.pansharpen Image fusion algorithms to  sharpen  multispectral
124               with high-res panchromatic channels
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126           •   i.pca Principal components analysis (PCA) for image processing.
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128           •   i.rectify  Rectifies  an image by computing a coordinate trans‐
129               formation for each pixel in the  image  based  on  the  control
130               points.
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132           •   i.rgb.his  Transforms  raster  maps  from  RGB (Red-Green-Blue)
133               color space to HIS (Hue-Intensity-Saturation) color space.
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135           •   i.segment Identifies segments (objects) from imagery data.
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137           •   i.smap Performs contextual image classification  using  sequen‐
138               tial maximum a posteriori (SMAP) estimation.
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140           •   i.spectral  Displays  spectral response at user specified loca‐
141               tions in group or images.
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143           •   i.target Targets an imagery  group  to  a  GRASS  location  and
144               mapset.
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146           •   i.tasscap Performs Tasseled Cap (Kauth Thomas) transformation.
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148           •   i.topo.corr Computes topographic correction of reflectance.
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150           •   i.vi Calculates different types of vegetation indices.
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153           •   i.zc  Zero-crossing  "edge detection" raster function for image
154               processing.
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156       Main index | Topics index | Keywords index | Graphical index | Full in‐
157       dex
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159       © 2003-2023 GRASS Development Team, GRASS GIS 8.2.1 Reference Manual
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163GRASS 8.2.1                                               imagery_graphical(1)
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