vig_optimize(1) [debian man page]
VIG_OPTIMIZE(1) HUGIN VIG_OPTIMIZE(1) NAME
vig_optimize - Optimise photometric parameters SYNOPSIS
vig_optimize [options] -o output.pto input.pto DESCRIPTION
Photometric calculation can be performed on the command-line with the vig_optimize tool. This functionally is configured via 'v' variable lines in the .pto project file in a similar way to the autooptimiser tool: The camera response curve is simplified using the EMoR sensor model which reduces the variation to five numbers, these are the Ra, Rb, Rc, Rd & Re image (i) parameters (the default values of 0.0 are equivalent to an 'average' generic sensor). The vignetting model is represented by a polynomial with four parameters: Va (this is always 1.0 and doesn't need to be optimised) and Vb, Vc & Vd (which default to 0.0 - equivalent to no vignetting). The vignetting centre can also be different from the geometrical centre, this is specified by Vx & Vy (both default to 0.0). Exposure (EV) is represented by a single value Ev (defaults 0.0, equivalent to no-change). The white balance is represented by multipliers for the red and blue channels Er and Eb (the defaults of 1.0 are equivalent to no-change). A typical 'v' variable line configuration would look like this, i.e. optimise camera response curve and vignetting for image 0 and exposure for images 1, 2, 3 and 4: v Ra0 Rb0 Rc0 Rd0 Re0 Vb0 Vc0 Vd0 v Ev1 Ev2 Ev3 Ev4 (vignetting centre and white balance are left unchanged) OPTIONS
General options: -o file Write results to output project -v Verbose, print progress messages -p n Number of points to extract -r Extract random point (faster, but less accurate) -s level Work on downscaled images, every step halves width and height -h Display help summary. Expert and debugging options: -i file Read corresponding points from file -w file Dump corresponding points to file 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. "Version: 2011.4.0" 2011-12-02 VIG_OPTIMIZE(1)
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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 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. "Version: 2011.4.0" 2011-12-02 FULLA(1)