# Multi image techniques

From PanoTools.org Wiki

There are several use cases to merge several image into one. This page lists some of them.

## Moved camera variants

For these applications the camera is moved and several images are shoot in different directions. Possible applications are:

- Classic panorama: increase field of view
- Gigapixel panorama
- Brenizer method: decrease depth of field (DOF), also called Bokeh panorama

## Single stack variants

Here the same scene is shoot with different settings. The applications covers e.g.

- HDR generation (exposure stack)
- Extend dynamic range by exposure fusion (exposure stack)
- Extend depth of field (DOF) (focus stack)
- Noise reduction
  - averaging (of several images of the same scene, shoot with same settings)
  - zero-noise technique
- Super Resolution: sub pixel offset stacking
- Tourist Removal
  - Automatic calculation with median
  - Manual with multi masking
- Visualize movement
- Lightning improvement by combining flash/no-flash images
- Saturation enhancement by polarization Series

## Video technique

Also a video can be used as input for some techniques, e.g.

- Panorama (increased field of view)
- Video (post) stabilization
- Noise reduction

Retrieved from "https://wiki.panotools.org/index.php?title=Multi_image_techniques&oldid=15875"