1=head1 NAME 2 3tca_correct - Calculate transverse chromatic aberration 4 5=head1 SYNOPSIS 6 7B<tca_correct> [options] I<inputfile> 8 9<inputfile> is the base name of 4 image files: 10 11=over 12 13=item <inputfile> 14 15Colour file to compute TCA parameters 16 17=item red_<inputfile> 18 19Red channel of <inputfile> 20 21=item green_<inputfile> 22 23Green channel of <inputfile> 24 25=item blue_<inputfile> 26 27Blue channel of <inputfile> 28 29=back 30 31The channel images must be colour images with 3 identical channels. If any of 32-R, -G, or -B is given, this file name is used instead of the derived name. 33 34Output: commandline arguments for fulla 35 36=head1 DESCRIPTION 37 38Generates fulla command-line parameters for correction of transverse chromatic 39aberration (TCA) from sample photos. Ideal sample photos would have a lot of 40contrast over the entire image area, little saturated colour and no blown 41highlights. 42 43=head1 OPTIONS 44 45=over 46 47=item B<-h> 48 49Display help 50 51=item B<-l> 52 53input file is PTO file instead of image 54 55=item B<-m> I<method> 56 57optimization method (0 normal, 1 newfit) 58 59=item B<-o> I<optvars> 60 61string of variables to optimize ("abcvde") 62 63=item B<-r> 64 65Reset values (this will zero a,b,c,d,e params and set v to 10) makes sense only 66with -l option 67 68=item B<-s> I<<scale>> 69 70Scale for corner detection 71 72=item B<-n> I<<number>> 73 74number of points per grid cell (default: 10) 75 76=item B<-g> I<<number>> 77 78divide image in <number>x<number> grid cells (default: 10) 79 80=item B<-t> I<num> 81 82Remove all control points with an error higher than num pixels (default: 1.5) 83 84=item B<-v> 85 86Verbose 87 88=item B<--save-into-database> 89 90Saves the tca data into Hugin lens database 91 92=item B<-w> I<filename> 93 94write PTO file 95 96=item B<-R> I<<r>> 97 98Use this file as red channel 99 100=item B<-G> I<<g>> 101 102Use this file as green channel 103 104=item B<-B> I<<b>> 105 106Use this file as blue channel 107 108=back 109 110=head1 AUTHORS 111 112Written by Pablo d'Angelo and others. 113