hugin_stacker - Man Page
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 image is first calculated. Then each pixel in each image 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 separate mask 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 image 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