tca_correct (1) Linux Manual Page

NAME

tca_correct – Calculate transverse chromatic aberration

SYNOPSIS

tca_correct [options] inputfile

<inputfile> is the base name of 4 image files:

<inputfile>

Colour file to compute TCA parameters

red_<inputfile>

Red channel of <inputfile>

green_<inputfile>

Green channel of <inputfile>

blue_<inputfile>

Blue channel of <inputfile>

The channel images must be colour images with 3 identical channels. If any of -R, -G, or -B is given, this file name is used instead of the derived name.

Output: commandline arguments for fulla

DESCRIPTION

Generates fulla command-line parameters for correction of transverse chromatic aberration (TCA) from sample photos. Ideal sample photos would have a lot of contrast over the entire image area, little saturated colour and no blown highlights.

OPTIONS

-h

Display help

-l

input file is PTO file instead of image

-m method

optimization method (0 normal, 1 newfit)

-o optvars

string of variables to optimize (“abcvde”)

-r

Reset values (this will zero a,b,c,d,e params and set v to 10) makes sense only with -l option

-s <scale>

Scale for corner detection

-n <number>

number of points per grid cell (default: 10)

-g <number>

divide image in <number>x<number> grid cells (default: 10)

-t num

Remove all control points with an error higher than num pixels (default: 1.5)

-v

Verbose

-w filename

write PTO file

-R <r>

Use this file as red channel

-G <g>

Use this file as green channel

-B <b>

Use this file as blue channel

AUTHORS

Written by Pablo d’Angelo and others.

Index