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 PTLens database (only
database version 4.2 is supported).
Vignetting correction is done the same way as described in the nona
script file documentation. 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
-g a:b:c:d
Radial distortion coefficient for all channels, (a, b, c, d)
-b a:b:c:d
Radial distortion coefficients for blue channel, (a, b, c, d). This
is applied on top of the -g distortion coefficients, use for TCA
corr
-r a:b:c:d
Radial distortion coefficients for red channel, (a, b, c, d). This
is applied on top of the -g distortion coefficients, use for TCA
corr
-p Try to read radial distortion coefficients (usually supplied using
-g) from the PTLens database. The environment variable
PTLENS_PROFILE should point to the profile.txt file. Since newer
version of the PTLens database are incompatible with fulla,
download the PTLens database from the hugin sourceforge website
instead: http://www.sf.net/projects/hugin
-m Canon
Camera manufacturer, for PTLens database query. EXIF data inside
JPEG files is read, if this option is not given
-n Camera
Camera name, for PTLens database query. EXIF data inside JPEG files
is read, if this option is not given.
-l Lens
Lens name, for PTLens database query if not specified, a list of
possible lenses is displayed
-d 50
Specify focal length in mm, for PTLens database query. EXIF data
inside JPEG files is read, if this option is not given.
-s Do not rescale the image to avoid black borders.
-f filename
Vignetting correction by flat-field division
I = I / c, c = flat-field / mean(flat-field)
-c a:b:c:d
Radial vignetting correction by division:
I = I / c, c = a + b*r^2 + c*r^4 + d*r^6
-i value
Gamma of input data. used for gamma correction before and after
flat-field correction
-t n
Number of threads that should be used during processing
-h Display help summary.
-o name
Set output filename. If more than one image is given, the name will
be uses as suffix (default suffix: _corr)
-e value
Compression of the output files
For JPEG output: 0-100
For tiff output: DEFLATE, LZW
-v Verbose
AUTHORS
Written by Pablo d’Angelo. Also contains contributions from Douglas
Wilkins, Ippei Ukai, Ed Halley, Bruno Postle, Gerry Patterson and Brent
Townshend.
This man page was written by Cyril Brulebois
<cyril.brulebois@enst-bretagne.fr> and is licensed under the same terms
as the hugin package itself.