fulla

FULLA(1)                             HUGIN                            FULLA(1)



NAME
       fulla - Correct lens distortion, vignetting and chromatic aberration

SYNOPSIS
       fulla [options] inputfile(s)

DESCRIPTION
       Apply radial or flat-field vignetting correction as well as geometrical
       radial distortion and transversal chromatic aberration correction.

       fulla can be used to batch correct a large number of files. Radial
       distortion coefficients can be read from a lens database.

       Vignetting correction is done the same way as described in the nona
       script file documentation, or from lens database.  Vignetting
       correction can be done based on a flat-field or a radial scaling.

       Vignetting correction by flat-field division:
                               I = I / c,    c = flat-field / mean(flat-field)

       Radial vignetting correction:
                               I = I / c,    c = a + b*r^2 + c*r^4 + d*r^6

       The radial distortion correction is identical to the one implemented by
       PanoTools:

       r_new = a*r^4 + b*r^3 + c*r^2 + d*r   [1]

       Since transversal chromatic aberrations (TCA) leads to differently
       scaled objects in the red, green and blue channel, it can be corrected
       by scaling the red and blue channel so that they match the green
       channel. Most applications, like Photoshop or Picture Window Pro offer
       TCA correction by linear scaling. This is equal to varying the d
       parameter in equation [1].

       See http://hugin.sf.net/tutorials/tca for a method to determine these
       parameters.

OPTIONS
       --green=db|a:b:c:d
           Correct radial distortion coefficient for all channels, (a, b, c,
           d) Specify 'db' for database lookup or the 4 coefficients a:b:c:d

       --blue=db|a:b:c:d
           Correct radial distortion coefficients for blue channel, (a, b, c,
           d). This is applied on top of the --green distortion coefficients,
           use for TCA corr Specify 'db' for database lookup or the 4
           coefficients a:b:c:d

       --red=db|a:b:c:d
           Correct radial distortion coefficients for red channel, (a, b, c,
           d). This is applied on top of the --green distortion coefficients,
           use for TCA corr Specify 'db' for database lookup or the 4
           coefficients a:b:c:d

       --camera-maker=Maker
           Camera manufacturer, for database query

       --camera-model=Cam
           Camera name, for database query

       --lensname=Lens
           Lens name, for database query

               Specify --camera-maker and --camera-model for fixed lens
               cameras or --lensname for interchangeable lenses.

       --focallength=50
           Specify focal length in mm, for database query

       --aperature=3.5
           Specify aperture for vignetting data database query

       --dont-rescale
           Do not rescale the image to avoid black borders.

       --flatfield=filename
           Vignetting correction by flatfield division I = I / c, c =
           flatfield / mean(flatfield)

       --vignetting=db|a:b:c:d
           Correct vignetting (by division) Specify db for database look up or
           the the 4 coefficients a:b:c:d I = I / ( a + b*r^2 + c*r^4 + d*r^6)

       --linear
           Do vignetting correction in linear color space

       --gamma=value
           Gamma of input data.  Used for gamma correction before and after
           flatfield correction

       threads=n
           Number of threads that should be used

       -h|--help
           Display help

       --output=name
           Set output filename. If more than one image is given, the name will
           be used as suffix.  (default suffix: _corr)

       --compression=value
           Compression of the output files.  For jpeg output: 0-100 For tiff
           output: PACKBITS, DEFLATE, LZW

       --offset=X:Y
           Horizontal and vertical shift

       --verbose
           Verbose

AUTHORS
       Written by Pablo d'Angelo. Also contains contributions from Douglas
       Wilkins, Ippei Ukai, Ed Halley, Bruno Postle, Gerry Patterson, Brent
       Townshend and Thomas Modes.



"Version: 2019.2.0"               2020-05-12                          FULLA(1)