GRASS logo

NAME

i.ortho.corona - Runs steps for i.ortho.photo for KH-4A/B Corona and KH-9 Hexagon scenes

KEYWORDS

imagery, orthorectification

SYNOPSIS

i.ortho.corona
i.ortho.corona --help
i.ortho.corona [-t] group=name grasspoints=name nw=east,north ne=east,north sw=east,north se=east,north [proj=string] camheading=string flightdir=string targetdem=string targetlocmapset=string [memory=memory in MB] [map_extension=string] [target_res=string] [focal_length=string] [scan_res=string] [default_height=string] [logfile=string] [--help] [--verbose] [--quiet] [--ui]

Flags:

-t
Only run until i.ortho.transform to analyse GCPs - don't run rectification
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog

Parameters:

group=name [required]
Name of input imagery group
grasspoints=name [required]
path to GCP file in grass format
path to GCP file in grass format
nw=east,north [required]
North-West corner coordinates in ll (lon,lat)
must be decimal degrees
ne=east,north [required]
North-East corner coordinates in ll (lon,lat)
must be decimal degrees
sw=east,north [required]
South-West corner coordinates in ll (lon,lat)
must be decimal degrees
se=east,north [required]
South-East corner coordinates in ll (lon,lat)
must be decimal degrees
proj=string
PROJ definition of the target CRS
e.g. +proj=utm +zone=32 +datum=WGS84 +units=m
Default: +proj=utm +zone=32 +datum=WGS84 +units=m
camheading=string [required]
camera heading (forward or aft)
Options: forward, aft
Default: forward
flightdir=string [required]
flight direction (north or south)
Options: north, south
Default: south
targetdem=string [required]
Name of DEM in target location/mapset
targetlocmapset=string [required]
target location and mapset in the format location/mapset
memory=memory in MB
Maximum memory to be used (in MB)
Cache size for raster rows
Default: 300
map_extension=string
extension to be added to the rectified map in the target mapset
Default: _utm_v1
target_res=string
resolution of rectified map (in meters)
Default: 2
focal_length=string
focal length of the camera
Default: 609.602
scan_res=string
scan resolution of films in pixels/cm
Default: 1432.3507
default_height=string
altitude of the satellite in meters
Default: 160000
logfile=string
path to store logfile of i.ortho.transform

Table of contents

DESCRIPTION

i.ortho.corona runs the required steps from i.ortho.photo for the orthorectification of KH-4A/B Corona and KH-9 Hexagon scenes.

i.ortho.corona requires the image group to be already created. Based on the input parameters it then runs i.ortho.target, i.ortho.elev, i.ortho.camera, i.ortho.position, i.ortho.init, i.ortho.transform, and i.ortho.rectify. If the -t flag is applied, it only outputs the result of i.ortho.transform and does not continue to run i.ortho.rectify. If the logfile parameter is indicated, the output of i.ortho.transform -t will be written to a logfile.

SEE ALSO

i.ortho.photo, i.ortho.target, i.ortho.elev, i.ortho.camera, i.ortho.position, i.ortho.init, i.ortho.transform, i.ortho.rectify

AUTHOR

Guido Riembauer, mundialis

SOURCE CODE

Available at: i.ortho.corona source code (history)

Accessed: Monday Jul 27 12:22:35 2026

Main index | Imagery index | Topics index | Keywords index | Graphical index | Full index

© 2003-2026 GRASS Development Team, GRASS 8.5.1dev Reference Manual