New version of ImPPG: faster processing on the GPU

[GreatAttractor]

ImPPG version 0.6.0 has been released. After some architectural cleanup, I added a GPU/OpenGL back end, that is, almost all processing (except image alignment) is now performed on the GPU. In practical terms, on most computers it means:

• processing is faster by a factor of several or more
• for quite big selection sizes and moderate L-R iteration counts, the results are rendered immediately as you move the "sigma" slider
• no delay of image refresh when scrolling with zoom ≠ 100%
• cubic interpolation does not cause a slow down

 

You can see the new version in action in this short video:
https://www.youtube.com/watch?v=giq4jCnC6KM

Benchmarking result of my system - CPU: Ryzen 2700 (8 cores, 16 threads, 3.2 GHz base), GPU: Radeon R370. A typical workload - batch processing of 200 images, 1.2 Mpix each, 50 iterations of L-R deconvolution, unsharp masking and tone mapping. (Note that in CPU mode all cores are used.)

• CPU mode: 2:20 min
• GPU mode: 19 s

 

Even on a 5-year old laptop with an integrated Intel GPU there is a noticeable speed-up.

[GreatAttractor]

A small bugfix update – version 0.6.1 – is available at https://github.com/GreatAttractor/imppg/releases

Bug fixes:

• Invalid batch processing results in OpenGL mode

Enhancements:

• Tone curve window position reset command

 

For the rare situations where window positioning does not work correctly, you can now force a reset of the tone curve window's position:

[CraigT82]

Really like imppg for sharpening my lunar images... thanks for your efforts! 👍

[Pete Presland]

I like it as well, especially for my Solar images, thanks for your adverts.