1imagery_graphical(1) GRASS GIS User's Manual imagery_graphical(1)
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14 Go to imagery introduction | topics
15 Imagery modules:
17 · i.albedo Computes broad band albedo from surface reflectance.
18 · i.aster.toar Calculates Top of Atmosphere Radi‐
20 ance/Reflectance/Brightness Temperature from ASTER DN.
21 · i.atcorr Performs atmospheric correction using the 6S algo‐
23 rithm.
24 · i.biomass Computes biomass growth, precursor of crop yield cal‐
27 culation.
28 · i.cca Canonical components analysis (CCA) program for image
30 processing.
31 · i.cluster Generates spectral signatures for land cover types in
33 an image using a clustering algorithm.
34 · i.colors.enhance Performs auto-balancing of colors for RGB
37 images.
38 · i.eb.eta Actual evapotranspiration for diurnal period (Basti‐
40 aanssen, 1995).
41 · i.eb.evapfr Computes evaporative fraction and root zone soil
43 moisture.
44 · i.eb.hsebal01 Computes sensible heat flux iteration SEBAL 01.
46 · i.eb.netrad Net radiation approximation (Bastiaanssen, 1995).
48 · i.eb.soilheatflux Soil heat flux approximation (Bastiaanssen,
50 1995).
51 · i.emissivity Computes emissivity from NDVI, generic method for
53 sparse land.
54 · i.evapo.mh Computes evapotranspiration calculation modified or
56 original Hargreaves formulation, 2001.
57 · i.evapo.pm Computes potential evapotranspiration calculation
59 with hourly Penman-Monteith.
60 · i.evapo.pt Computes evapotranspiration calculation Priestley
62 and Taylor formulation, 1972.
63 · i.evapo.time Computes temporal integration of satellite ET
65 actual (ETa) following the daily ET reference (ETo) from meteo‐
66 rological station(s).
67 · i.fft Fast Fourier Transform (FFT) for image processing.
69 · i.gensig Generates statistics for i.maxlik from raster map.
71 · i.gensigset Generates statistics for i.smap from raster map.
73 · i.group Creates, edits, and lists groups of imagery data.
75 · i.his.rgb Transforms raster maps from HIS (Hue-Intensity-Satu‐
77 ration) color space to RGB (Red-Green-Blue) color space.
78 · i.ifft Inverse Fast Fourier Transform (IFFT) for image process‐
80 ing.
81 · i.image.mosaic Mosaics several images and extends colormap.
83 · i.in.spotvgt Imports SPOT VGT NDVI data into a raster map.
85 · i.landsat.acca Performs Landsat TM/ETM+ Automatic Cloud Cover
87 Assessment (ACCA).
88 · i.landsat.toar Calculates top-of-atmosphere radiance or
90 reflectance and temperature for Landsat MSS/TM/ETM+/OLI
91 · i.maxlik Classifies the cell spectral reflectances in imagery
93 data.
94 · i.modis.qc Extracts quality control parameters from MODIS QC
97 layers.
98 · i.oif Calculates Optimum-Index-Factor table for spectral bands
100 · i.ortho.camera Select and modify the imagery group camera ref‐
102 erence file.
103 · i.ortho.elev Select or modify the target elevation model.
105 · i.ortho.init Interactively creates or modifies entries in a
107 camera initial exposure station file for imagery group refer‐
108 enced by a sub-block.
109 · i.ortho.photo Menu driver for the photo imagery programs.
111 · i.ortho.rectify Orthorectifies an image by using the image to
113 photo coordinate transformation matrix.
114 · i.ortho.target Select or modify the imagery group target.
116 · i.ortho.transform Computes a coordinate transformation based on
118 the control points.
119 · i.pansharpen Image fusion algorithms to sharpen multispectral
121 with high-res panchromatic channels
122 · i.pca Principal components analysis (PCA) for image processing.
124 · i.rectify Rectifies an image by computing a coordinate trans‐
126 formation for each pixel in the image based on the control
127 points.
128 · i.rgb.his Transforms raster maps from RGB (Red-Green-Blue)
130 color space to HIS (Hue-Intensity-Saturation) color space.
131 · i.segment Identifies segments (objects) from imagery data.
133 · i.smap Performs contextual image classification using sequen‐
135 tial maximum a posteriori (SMAP) estimation.
136 · i.spectral Displays spectral response at user specified loca‐
138 tions in group or images.
139 · i.target Targets an imagery group to a GRASS location and
141 mapset.
142 · i.tasscap Performs Tasseled Cap (Kauth Thomas) transformation.
144 · i.topo.corr Computes topographic correction of reflectance.
146 · i.vi Calculates different types of vegetation indices.
148 · i.zc Zero-crossing "edge detection" raster function for image
151 processing.
152 Main index | Topics index | Keywords index | Graphical index | Full
154 index
155 © 2003-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual
157GRASS 7.8.5 imagery_graphical(1)