NAME
i.ortho.transform - Computes a coordinate transformation based on the control points.
KEYWORDS
imagery,
orthorectify,
transformation,
GCP
SYNOPSIS
i.ortho.transform
i.ortho.transform --help
i.ortho.transform [-srxp] group=name [format=string[,string,...]] [coords=name] [--help] [--verbose] [--quiet] [--ui]
Flags:
- -s
- Display summary information
- -r
- Reverse transform of coords file or coeff. dump
- Target east,north,height coordinates to local x,y,z
- -x
- Display transform matrix coefficients
- -p
- Enable panorama camera correction
- --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
- format=string[,string,...]
- Output format
- Options: idx, src, dst, fwd, rev, fxy, rxy, fd, rd
- Default: fd,rd
- idx: point index
- src: source coordinates
- dst: destination coordinates
- fwd: forward coordinates (destination)
- rev: reverse coordinates (source)
- fxy: forward coordinates difference (destination)
- rxy: reverse coordinates difference (source)
- fd: forward error (destination)
- rd: reverse error (source)
- coords=name
- File containing coordinates to transform ("-" to read from stdin)
- Local x,y,z coordinates to target east,north,height
i.ortho.transform is an utility to compute transformation
based upon GCPs and output error measurements.
If coordinates are given with the input file option or fed from
stdin, both the input and the output format is "x y z" with one
coordinate pair per line. Reverse transform is performed with the
-r flag.
The format option determines how control points are printed out.
A summary on the control points can be printed with the -s flag.
The summary includes maximum deviation observed when transforming GCPs
and overall RMS. The format option is ignored when coordinates
are given with the input file option.
Ortho-transformation is a 2-step transformation. First, source
coordinates are transformed to sensor coordinates, then sensor
coordinates are transformed to target coordinates.
i.rectify
Update this document with x,y,z<->E,N,H information
Brian J. Buckley
Glynn Clements
Hamish Bowman
SOURCE CODE
Available at:
i.ortho.transform source code
(history)
Latest change: Friday Mar 22 17:42:51 2024 in commit: cb37ba72188183b22f233db7ed18d22ef8ff1068
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GRASS Development Team,
GRASS GIS 8.5.0dev Reference Manual