---
name: "hugin_stacker"
section: "1"
platform: "linux"
package: "hugin"
version: "2025.0.1-5"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/hugin_stacker"
---

# hugin\_stacker(1)

stack overlapping images to a single image

## 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 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