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Graphical index of GRASS GIS modules
Go to imagery introduction | topics Imagery modules: • i.albedo Computes broad band albedo from surface reflectance. • i.aster.toar Calculates Top of Atmosphere Radiance/Reflectance/Brightness Temperature from ASTER DN. • i.atcorr Performs atmospheric correction using the 6S algorithm. • i.band.library Prints available semantic label information used for multispectral data. • i.biomass Computes biomass growth, precursor of crop yield calculation. • i.cca Canonical components analysis (CCA) program for image processing. • i.cluster Generates spectral signatures for land cover types in an image using a clustering algorithm. • i.colors.enhance Performs auto-balancing of colors for RGB images. • i.eb.eta Actual evapotranspiration for diurnal period (Bastiaanssen, 1995). • i.eb.evapfr Computes evaporative fraction and root zone soil moisture. • i.eb.hsebal01 Computes sensible heat flux iteration SEBAL 01. • i.eb.netrad Net radiation approximation (Bastiaanssen, 1995). • i.eb.soilheatflux Soil heat flux approximation (Bastiaanssen, 1995). • i.emissivity Computes emissivity from NDVI, generic method for sparse land. • i.evapo.mh Computes evapotranspiration calculation modified or original Hargreaves formulation, 2001. • i.evapo.pm Computes potential evapotranspiration calculation with hourly Penman-Monteith. • i.evapo.pt Computes evapotranspiration calculation Priestley and Taylor formulation, 1972. • i.evapo.time Computes temporal integration of satellite ET actual (ETa) following the daily ET reference (ETo) from meteorological station(s). • i.fft Fast Fourier Transform (FFT) for image processing. • i.gensig Generates statistics for i.maxlik from raster map. • i.gensigset Generates statistics for i.smap from raster map. • i.group Creates, edits, and lists groups of imagery data. • i.his.rgb Transforms raster maps from HIS (Hue-Intensity-Saturation) color space to RGB (Red-Green-Blue) color space. • i.ifft Inverse Fast Fourier Transform (IFFT) for image processing. • i.image.mosaic Mosaics several images and extends colormap. • i.in.spotvgt Imports SPOT VGT NDVI data into a raster map. • i.landsat.acca Performs Landsat TM/ETM+ Automatic Cloud Cover Assessment (ACCA). • i.landsat.toar Calculates top-of-atmosphere radiance or reflectance and temperature for Landsat MSS/TM/ETM+/OLI • i.maxlik Classifies the cell spectral reflectances in imagery data. • i.modis.qc Extracts quality control parameters from MODIS QC layers. • i.oif Calculates Optimum-Index-Factor table for spectral bands • i.ortho.camera Select and modify the imagery group camera reference file. • i.ortho.elev Select or modify the target elevation model. • i.ortho.init Interactively creates or modifies entries in a camera initial exposure station file for imagery group referenced by a sub-block. • i.ortho.photo Menu driver for the photo imagery programs. • i.ortho.rectify Orthorectifies an image by using the image to photo coordinate transformation matrix. • i.ortho.target Select or modify the imagery group target. • i.ortho.transform Computes a coordinate transformation based on the control points. • i.pansharpen Image fusion algorithms to sharpen multispectral with high-res panchromatic channels • i.pca Principal components analysis (PCA) for image processing. • i.rectify Rectifies an image by computing a coordinate transformation for each pixel in the image based on the control points. • i.rgb.his Transforms raster maps from RGB (Red-Green-Blue) color space to HIS (Hue-Intensity-Saturation) color space. • i.segment Identifies segments (objects) from imagery data. • i.smap Performs contextual image classification using sequential maximum a posteriori (SMAP) estimation. • i.spectral Displays spectral response at user specified locations in group or images. • i.target Targets an imagery group to a GRASS location and mapset. • i.tasscap Performs Tasseled Cap (Kauth Thomas) transformation. • i.topo.corr Computes topographic correction of reflectance. • i.vi Calculates different types of vegetation indices. • i.zc Zero-crossing "edge detection" raster function for image processing. Main index | Topics index | Keywords index | Graphical index | Full index © 2003-2023 GRASS Development Team, GRASS GIS 8.3.0 Reference Manual