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HUGIN_STACKER(1) HUGIN HUGIN_STACKER(1)

NAME

hugin_stacker - stack overlapping images to a single image

SYNOPSIS

hugin_stacker [options] --mode=STRING images

DESCRIPTION

hugin_stacker acts on a stack of overlapping images and produces a combined image and/or a set of masked output images.

hugin_stacker is useful for e.g.

  • automatic tourist removal (not only tourists, also other moving objects ;-))
  • noise reduction
  • visualize movement
  • multiplicity

OPTIONS

--mode
Select stack mode:
min|minimum|darkest
Select the darkest pixel.
max|maximum|brightest
Select the brightest pixel.
avg|average|mean
Calculate the mean for each position.
median
Calculate the median for each position.
winsor
Calculate the Winsor trimmed mean for each position. The parameter can be set with --winsor-trim=NUMBER (default: 0.2).
sigma
Calculate the sigma clipped mean for each position. Fine-tune with --max-sigma=NUMBER (default: 2) and --max-iterations=NUMBER (default: 5).

Further parameters

--output=FILE
Set the filename for the output file (if not given final.tif is used).
--compression=value
Set the compression of the output files. For jpeg files use values between 0 and 100. For tiff files valid values are: PACKBITS, DEFLATE, LZW.
--bigtiff
Write output in BigTIFF format (only with TIFF output).

Mask input images

--mask-input
Beside the stacked output hugin_stacker can also mask the input images (available only for stacking modes median|winsor|clip). This mode is activated with --mask-input. In this case the stacked images is first calculated. Then each pixel is checked: if the value of this pixel differs more then mask sigma * standard deviation from the mean/median, this pixel is made visible. If it is in the mentioned range the pixel is masked out.
--mask-sigma=NUMBER
sets the sigma parameter for --mask-input. Default is 2.
--mask-suffix=STRING
Output a single image for each input image named inputfilenameSTRING. Default value is "_mask".
--multi-layer-output
Output a layered TIFF with the name specified with --output. The file contains the averaged images as layer 0 and all input images as additional layers with the mask as described above.

AUTHORS

POD-format documentation converted from <https://wiki.panotools.org/Hugin_stacker> by Andreas Metzler
2020-06-06 "Version: 2019.2.0"