1=for
2Copyright 2008 Cyril Brulebois <cyril.brulebois@enst-bretagne.fr>
3Licensed under the same terms as the hugin package itself.
4=end
5
6
7=head1 NAME
8
9vig_optimize - Optimise photometric parameters
10
11=head1 SYNOPSIS
12
13B<vig_optimize> [options] B<-o> I<output.pto> I<input.pto>
14
15
16=head1 DESCRIPTION
17
18Photometric calculation can be performed on the command-line with the
19vig_optimize tool. This functionally is configured via 'v' variable lines in
20the .pto project file in a similar way to the autooptimiser tool:
21
22The camera response curve is simplified using the EMoR sensor model which
23reduces the variation to five numbers, these are the Ra, Rb, Rc, Rd & Re image
24(i) parameters (the default values of 0.0 are equivalent to an 'average'
25generic sensor).
26
27The vignetting model is represented by a polynomial with four parameters: Va
28(this is always 1.0 and doesn't need to be optimised) and Vb, Vc & Vd (which
29default to 0.0 - equivalent to no vignetting). The vignetting centre can also
30be different from the geometrical centre, this is specified by Vx & Vy (both
31default to 0.0).
32
33Exposure (EV) is represented by a single value Ev (defaults 0.0, equivalent to
34no-change).
35
36The white balance is represented by multipliers for the red and blue channels
37Er and Eb (the defaults of 1.0 are equivalent to no-change).
38
39A typical 'v' variable line configuration would look like this, i.e. optimise camera response curve and vignetting for image 0 and exposure for images 1, 2, 3 and 4:
40
41  v Ra0 Rb0 Rc0 Rd0 Re0 Vb0 Vc0 Vd0
42  v Ev1 Ev2 Ev3 Ev4
43
44(vignetting centre and white balance are left unchanged)
45
46
47=head1 OPTIONS
48
49General options:
50
51=over
52
53=item B<-o> I<file>
54
55Write results to output project
56
57=item B<-v>
58
59Verbose, print progress messages
60
61=item B<-p> I<n>
62
63Number of points to extract
64
65=item B<-r>
66
67Extract random point (faster, but less accurate)
68
69=item B<-s> I<level>
70
71Work on downscaled images, every step halves width and height
72
73=item B<-h>
74
75Display help summary.
76
77=back
78
79
80Expert and debugging options:
81
82=over
83
84=item B<-i> I<file>
85
86Read corresponding points from file
87
88=item B<-w> I<file>
89
90Dump corresponding points to file
91
92=back
93
94
95=head1 AUTHORS
96
97Written by Pablo d'Angelo. Also contains contributions from Douglas Wilkins, Ippei Ukai, Ed Halley, Bruno Postle, Gerry Patterson and Brent Townshend.
98
99
100This man page was written by Cyril Brulebois
101<cyril.brulebois@enst-bretagne.fr> and is licensed under the same
102terms as the hugin package itself.
103