imagery_graphical(1)

📦
version 8.4.2 · 5 versions
, in fedora 44

✨ imagery_graphical(1) ✨ — GRASS GIS User's Manual

okay bestie, welcome to the graphical index of GRASS GIS modules 💖 this is not a command you run, it's literally the vibe board — a whole little catalogue of every module that lives in the imagery family. no cap, if you've ever wanted to know "which of these i.* things does the thing I want", this page is your girl. 🫶

🎀 the page's little outfit (styling)

fr fr the original page ships with its own teeny stylesheet up top, and we do not gatekeep. here it is, exactly as written, so the module list can look cute:

.img-list { margin: 0; padding: 0; list-style-type: none; } .img-list li {
padding: 5px; overflow: auto; } .img-list li:hover { background-color: #eee; }
.img-list li a { color: initial; text-decoration: none; display: block; }
.img-list li img { width: 10%; float: left; margin: 0 15px 0 0; background:
white; object-fit: scale-down; } .img-list li img.default-img { max-height:
5ex; } .img-list li .desc { margin: 0px; } .img-list li .name { margin: 5px;
display: block; color: #409940; font-weight: bold; font-style: italic; }

🌸 Graphical index of GRASS GIS modules

Go to imagery introduction | topics

🌈 Imagery modules:

the whole squad, in order, no skips 👑

  • 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.signatures — manage imagery classification signature files
  • 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

and that's the whole page bestie 💅 before you go — the receipts, because we always cite our sources: this page is © 2003-2025 GRASS Development Team, part of the GRASS GIS 8.4.2 Reference Manual, and the page you're reading right now is imagery_graphical(1) from GRASS 8.4.2. periodt. 🦋✨

📦 where this page comes from