1i.ortho.transform(1)        GRASS GIS User's Manual       i.ortho.transform(1)
2
3
4

NAME

6       i.ortho.transform   - Computes a coordinate transformation based on the
7       control points.
8

KEYWORDS

10       imagery, orthorectify, transformation, GCP
11

SYNOPSIS

13       i.ortho.transform
14       i.ortho.transform --help
15       i.ortho.transform  [-srxp]   group=name    [format=string[,string,...]]
16       [coords=name]   [--help]  [--verbose]  [--quiet]  [--ui]
17
18   Flags:
19       -s
20           Display summary information
21
22       -r
23           Reverse transform of coords file or coeff. dump
24           Target east,north,height coordinates to local x,y,z
25
26       -x
27           Display transform matrix coefficients
28
29       -p
30           Enable panorama camera correction
31
32       --help
33           Print usage summary
34
35       --verbose
36           Verbose module output
37
38       --quiet
39           Quiet module output
40
41       --ui
42           Force launching GUI dialog
43
44   Parameters:
45       group=name [required]
46           Name of input imagery group
47
48       format=string[,string,...]
49           Output format
50           Options: idx, src, dst, fwd, rev, fxy, rxy, fd, rd
51           Default: fd,rd
52           idx: point index
53           src: source coordinates
54           dst: destination coordinates
55           fwd: forward coordinates (destination)
56           rev: reverse coordinates (source)
57           fxy: forward coordinates difference (destination)
58           rxy: reverse coordinates difference (source)
59           fd: forward error (destination)
60           rd: reverse error (source)
61
62       coords=name
63           File containing coordinates to transform ("-" to read from stdin)
64           Local x,y,z coordinates to target east,north,height
65

DESCRIPTION

67       i.ortho.transform  is  an  utility to compute transformation based upon
68       GCPs and output error measurements.
69
70       If coordinates are given with the input file option or fed from  stdin,
71       both  the  input  and  the output format is "x y z" with one coordinate
72       pair per line. Reverse transform is performed with the -r flag.
73
74       The format option determines how control points  are  printed  out.   A
75       summary  on  the  control  points can be printed with the -s flag.  The
76       summary includes maximum deviation observed when transforming GCPs  and
77       overall  RMS.  The  format option is ignored when coordinates are given
78       with the input file option.
79

NOTES

81       Ortho-transformation is a 2-step transformation. First, source  coordi‐
82       nates  are  transformed  to sensor coordinates, then sensor coordinates
83       are transformed to target coordinates.
84

SEE ALSO

86       i.rectify
87

TODO

89       Update this document with x,y,z<->E,N,H information
90

AUTHORS

92       Brian J. Buckley
93       Glynn Clements
94       Hamish Bowman
95

SOURCE CODE

97       Available at: i.ortho.transform source code (history)
98
99       Accessed: Saturday Jan 21 20:40:53 2023
100
101       Main index | Imagery index | Topics index | Keywords index |  Graphical
102       index | Full index
103
104       © 2003-2023 GRASS Development Team, GRASS GIS 8.2.1 Reference Manual
105
106
107
108GRASS 8.2.1                                               i.ortho.transform(1)