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)
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
