imagery_graphical(1grass)

💅✨ imagery_graphical(1grass) ✨💅

okay bestie, welcome to the cutest corner of the GRASS User's Manual — this is imagery_graphical, and it's literally just a graphical index of GRASS tools. every imagery tool, one line each, all dressed up pretty. it's giving table of contents but make it fashion. no cap. 🫶

---

🎀 NAME 🎀

imagery_graphical — graphical index of GRASS tools 💖

---

✨ STYLESHEET (the vibe layer) ✨

before you even meet the tools, here's the styling that makes this index look iconic. yes, .img-list li img.default-img is out here using var(--gs-primary-color) for its background and that is the moment fr fr. verbatim, don't touch a character:

.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; background-color: var(--gs-primary-color); padding: 5px; }
.img-list li .desc { margin: 0px; }
.img-list li .name { margin: 5px; display: block; color: #409940; font-weight: bold; font-style: italic; }

---

🌈 DESCRIPTION 🌈

Graphical index of GRASS tools.

Go to Imagery introduction | topics 🦋

---

🍓 IMAGERY TOOLS 🍓

the whole roster, bestie. fifty-one of them. all of them. let's go 👑

• 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 — does atmospheric correction using the 6S algorithm
• i.band.library — prints the available semantic label information used for multispectral data 🏷️
• i.biomass — computes biomass growth, aka the 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

---

🔍 SEE ALSO 🔍

• Main index
• Topics index
• Keywords index
• Graphical index
• Full index

bestie, every single one of these is a doorway. pick one, slay, and go 💅

---

and that's the whole page, periodt. © 2003-2026 GRASS Development Team, GRASS 8.5.0 Reference Manual — shoutout to the devs, they ate 💖 this was imagery_graphical(1grass) from GRASS 8.5.0, bye bestie, go compute something gorgeous 🌸✨🦋