ImPPG version 0.4 – limb alignment and FITS support
Posted: Sun Jun 21, 2015 6:49 pm
New version 0.4 has been released.
Download from http://stargazerslounge.com/blog/1400/e ... processor/
New features:
- Image sequence alignment via solar limb stabilization
- FITS files support (load/save)
- Zooming in/out of the view
Enhancements:
- View scrolling by dragging with the middle mouse button
- Logarithmic histogram setting is preserved
Bug fixes:
- Tone curve in gamma mode not applied during batch processing
Limb alignment is finally here - for animations that show a lot (the more, the better) of the limb. While the regular phase correlation alignment tends to keep your sunspots/proms/filaments stationary and moves the limb around, this will keep the disc steady (to show the rotation nicely).
Let me demonstrate on my last year's surge animation (Lunt 35); the first link uses phase alignment, the other – limb alignment:
Note that for now it will not work for eclipse shots.
The function expects input images with the disc brighter than the background, without strong vignetting or exaggerated limb darkening (e.g. during processing). So if you want to make them fully or part-inverted (or strongly darkened using low gamma), you must do it after the alignment. However, the images should be already sharpened before alignment (it will work on unsharpened stacks, but not as well).
In other news, FITS format is now supported (including alignment input/output). When saving, you can choose 8-bit, 16-bit or 32-bit floating-point.
Last but not least, the quite obvious feature of zooming the view in/out has been added. You can do it similarly to popular graphics apps: via menu, toolbar buttons or by using Ctrl+mouse wheel. The view can be also scrolled by dragging it with the middle mouse button (usually the wheel).
Screenshots:
Download from http://stargazerslounge.com/blog/1400/e ... processor/
New features:
- Image sequence alignment via solar limb stabilization
- FITS files support (load/save)
- Zooming in/out of the view
Enhancements:
- View scrolling by dragging with the middle mouse button
- Logarithmic histogram setting is preserved
Bug fixes:
- Tone curve in gamma mode not applied during batch processing
Limb alignment is finally here - for animations that show a lot (the more, the better) of the limb. While the regular phase correlation alignment tends to keep your sunspots/proms/filaments stationary and moves the limb around, this will keep the disc steady (to show the rotation nicely).
Let me demonstrate on my last year's surge animation (Lunt 35); the first link uses phase alignment, the other – limb alignment:
Note that for now it will not work for eclipse shots.
The function expects input images with the disc brighter than the background, without strong vignetting or exaggerated limb darkening (e.g. during processing). So if you want to make them fully or part-inverted (or strongly darkened using low gamma), you must do it after the alignment. However, the images should be already sharpened before alignment (it will work on unsharpened stacks, but not as well).
In other news, FITS format is now supported (including alignment input/output). When saving, you can choose 8-bit, 16-bit or 32-bit floating-point.
Last but not least, the quite obvious feature of zooming the view in/out has been added. You can do it similarly to popular graphics apps: via menu, toolbar buttons or by using Ctrl+mouse wheel. The view can be also scrolled by dragging it with the middle mouse button (usually the wheel).
Screenshots: