#apertus IRC Channel Logs

ill have no time for the meeting later, but some updates:

there are a bunch of new features:

I finally integrated the (lossy) SZ3 compression, so now one can write sz3 compressed blobs

the yaml based config file now supports variables that you can set on the command line

this describes a processing flow that reads a zstd compressed stack of (dark)frames, undoes the A / B frame combining and then recombines them properly, averages 128 of them, and saves the per pixel average and variance. The per pixel average is saved compressed as well as uncompressed

so you use this like this:

I also added a basic darkframe calibration node, that simply subtracts a given darkframe from the input.

Here the basic idea is, to calculate some histograms (full image, row wise, column wise) on the gpu, and then use those to quantify the residual noise / patterns left on the cpu.

https://f.coroot.de/2022-06-13%2017-26-17.mkv

with some simple additions, (bayer pattern aware histogram calculation) this histogram calculation code can also be reused for a onscreen histogram I think

(the darkframe correction / histogram are still on a branch: https://github.com/apertus-open-source-cinema/axiom-recorder/pull/31)

hmm...

very cool progress vup!