Bug 283628 - New tool : image stacking
Summary: New tool : image stacking
Status: RESOLVED NOT A BUG
Alias: None
Product: digikam
Classification: Applications
Component: Plugin-Generic-ExpoBlending (show other bugs)
Version: unspecified
Platform: Arch Linux Linux
: NOR wishlist
Target Milestone: ---
Assignee: Digikam Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-10-08 23:02 UTC by Tim
Modified: 2022-01-16 11:34 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In: 7.6.0


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Description Tim 2011-10-08 23:02:50 UTC
Version:           unspecified (using Devel) 
OS:                Linux

I understand that digiKam, through kipi, already supports both panoramas and HDR via enfuse. Please can we have support for alignment+stacking, at least a simple average of all the images passed? 

Justification/notes: The most noticeable effect of stacking is that with every doubling of the number of images, in noise terms the effective ISO halves (hence astronomers are particularly fond of it). A secondary consequence is "synthetic long exposure" - all the motion-blur of a long exposure but either at wider aperture or with less ND filtration required. The third use is for super-resolution: sub-pixel realignment differences cast extra detail into the image, either beating the limits of diffraction or facilitating larger upscaling.

(For those with Photoshop or the Gimp: averaging can be achieved by loading images into layers, setting their transparencies to 100, 50, 33,... 100/n% where the background n=1.)

I, for one, would be very grateful - my workflow is increasingly dependent on stacking a handful of images together.

Reproducible: Always



Expected Results:
Comment 1 Tim 2011-10-19 16:03:00 UTC
Update: I discovered that enfuse, with no (or equal) weightings is equivalent to averaging already. Therefore I'm closing this enhancement request, although I note in passing that a label in the GUI to that effect would help make it a bit more obvious.