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align_image_stack(1) [debian man page]

ALIGN_IMAGE_STACK(1)						       HUGIN						      ALIGN_IMAGE_STACK(1)

NAME
align_image_stack - Align overlapping images for HDR or focus stack creation SYNOPSIS
align_image_stack [options] input files DESCRIPTION
align_image_stack is used for the alignment of slightly misaligned images or for the registration of a stereo images pair. When several differently exposed images are taken in the process of creating a High Dynamic Range image, the images are not perfectly aligned, and the quality of the HDR image created will suffer from this. align_image_stack uses the tools available to hugin to optimize the roll, pitch and yaw, as well as some parameters of the lens geometry, to align the images. OPTIONS
Modes of operation: -p file Output .pto file (useful for debugging, or further refinement) -a prefix Output aligned images as prefix_xxxx.tif -o output Align images and merge them to HDR, generate output.hdr Modifiers: -v Verbose, print progress messages. Repeat for higher verbosity -e Assume input images are full frame fish eye (default: rectilinear) -t num Remove all control points with an error higher than num pixels (default: 3) -f HFOV Approximate horizontal field of view of input images, use if EXIF info not complete -m Optimize field of view for all images, except for first. Useful for aligning focus stacks with slightly different magnification. -d Optimize radial distortion for all images, except for first. -i Optimize image center shift for all images, except for first. -S Assume stereo images - allow horizontal shift of control points. -A Align stereo window - assumes -S -P Align stereo window with pop-out effect - assumes -S -C Auto crop the image to the area covered by all images -c num Number of control points (per grid) to create between adjacent images (default: 8) -l Assume linear input files -s scale Scale down image by 2^scale (default: 1 [2x down-sampling]) -g gsize Break image into a rectangular grid (gsize x gsize) and attempt to find num control points in each section (default: 5 [5x5 grid]) -h Display help summary. AUTHORS
Written by Pablo d'Angelo. Also contains contributions from Douglas Wilkins, Ippei Ukai, Ed Halley, Bruno Postle, Gerry Patterson and Brent Townshend. Stereo functionality added by Vladimir Nadvornik. 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 ALIGN_IMAGE_STACK(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)
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