nice, thanks for the timings!
(cc-ing dt-dev back, might be interesting to others)
-jo
On Thu, Feb 27, 2014 at 5:36 PM, Gert van der Plas - Schrama <
gertvdp...@gmail.com> wrote:
> PPG: [dev_pixelpipe] took 0,584 secs (0,428 CPU) processing `demosaic'
> [export]
> AMAZE: [dev_pixelpipe] took 1,848 secs (11,616 CPU) processing
> `demosaic' [export]
> IGV: [dev_pixelpipe] took 0,763 secs (0,403 CPU) processing `demosaic'
> [export]
> STAGGER: [dev_pixelpipe] took 0,227 secs (1,291 CPU) processing
> `demosaic' [export]
>
> ;-)
>
> IGV and STAGGER have OpenMP statements in them. Using a 1.6GHz mobile
> i7 CPU. Stagger should be easy to code in OpenCL. And yes, my graphics
> card is a snail.
>
> Best,
>
> Gert
>
>
> On Thu, Feb 27, 2014 at 4:37 PM, johannes hanika <hana...@gmail.com>
> wrote:
> >
> >
> >
> > On Wed, Feb 26, 2014 at 7:04 PM, Gert van der Plas - Schrama
> > <gertvdp...@gmail.com> wrote:
> >>
> >> Run times. Time complexity is O (1)
> >
> >
> > in the number of pixels? impressive. i was more interested in output of
> > `darktable -d perf' in milliseconds for example.
> >
> > j.
> >
> >>
> >> for stagger. No clue for igv. But its not perceptible slower than ppg or
> >> amaze on my first generation mobile i7 using OpenMP.
> >>
> >> Best,
> >>
> >> Gert
> >>
> >> Op 26 feb. 2014 14:16 schreef "johannes hanika" <hana...@gmail.com>:
> >>>
> >>> hey,
> >>>
> >>> nice, sounds like you're having fun with those demosaicers..
> >>>
> >>> could you upload a small set of comparison images illustrating why you
> >>> think one algo is better than the other, just so we all know what
> you're
> >>> talking about? preferably with run times.
> >>>
> >>> doxygen, really? do people still do that? the best documentation you'll
> >>> get is #darktable on freenode.
> >>>
> >>> -jo
> >>>
> >>>
> >>>
> >>> On Wed, Feb 26, 2014 at 12:00 PM, Gert van der Plas - Schrama
> >>> <gertvdp...@gmail.com> wrote:
> >>>>
> >>>> Hi,
> >>>>
> >>>> I branched darktable on github and created a branch named
> >>>> demosaic-algos for version 1.5. I've added two 'experimental' demosaic
> >>>> codes for high noise situations. I have not yet added border
> >>>> interpolation and plan to drop the unused pixels to prevent
> >>>> differences in demosaic rendering. IGV is pretty powerful.
> >>>>
> >>>> - igv with OpenMP support from rawtherapee. Suitable for high noise,
> >>>> i.e. for the Sony NEX-C3 suitable for 1600 iso, 3200 iso and 6400 iso,
> >>>> about 90 minutes work to port.
> >>>> - stagger with OpenMP support, home-brewed. Suitable for very high
> >>>> noise, i.e. for the Sony NEX-C3, under exposed 6400 and 12800 iso
> >>>> shots.
> >>>>
> >>>> I might port more demosaic codes from RawTherapee but amaze and igv
> >>>> seem to give the best results for my camera. Most likely I am
> >>>> interested in adding newer more advanced demosaic codes that perform
> >>>> better than amaze.
> >>>>
> >>>> People who are interested in the algorithms and want to give feedback
> >>>> can go here and pick a commit that is not mentioned to be broken.
> >>>>
> >>>> https://github.com/digitalmole/darktable/tree/demosaic-algos
> >>>>
> >>>> some things one should now:
> >>>>
> >>>> - Currently there is no border interpolation, border pixels are simply
> >>>> as allocated from memory.
> >>>> - Stagger. It does not smooth color noise, it leaves it to the
> >>>> profiled denoising module to remove them. The edge threshold slider is
> >>>> used to enable 'green edge awareness'. Slide it to the left to
> >>>> increase edge-awareness and increase noise. About 0.2-0.3 are nice
> >>>> values for the Sony NEX.
> >>>>
> >>>> Feedback and advice is welcome. Particular on any pitfalls I might
> >>>> encounter.
> >>>>
> >>>> Cheers,
> >>>>
> >>>> Gert
> >>>>
> >>>>
> >>>> --
> >>>> Panta Rhei -- Life is a dance
> >>>>
> >>>>
> >>>>
> ------------------------------------------------------------------------------
> >>>> Flow-based real-time traffic analytics software. Cisco certified tool.
> >>>> Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer
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> >>>>
> >>>>
> http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk
> >>>> _______________________________________________
> >>>> darktable-devel mailing list
> >>>> darktable-devel@lists.sourceforge.net
> >>>> https://lists.sourceforge.net/lists/listinfo/darktable-devel
> >>>
> >>>
> >
>
>
>
> --
> Panta Rhei -- Life is a dance
>
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