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: 2016.2.0"               2016-09-11                          FULLA(1)

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