HDR -> SDR conversion

These CUDA filters are packaged into DGDecodeNV, which is part of DGDecNV.
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Rocky
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Re: HDR -> SDR conversion

Post by Rocky »

Umm, OK.

I fixed a small bug in DGIndexNV in the test package, so please re-download and update for testing.
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Rocky
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Re: HDR -> SDR conversion

Post by Rocky »

Found some more bugs. Temporarily withdrawing. Standby...
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Rocky
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Re: HDR -> SDR conversion

Post by Rocky »

OK, hlg_test.rar is back online so re-download and update DGIndexNV. Have at it!
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DJATOM
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Re: HDR -> SDR conversion

Post by DJATOM »

I've tuned Meari sample to match mpv's output (slightly brighter, but looks better for me)
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Rocky
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Re: HDR -> SDR conversion

Post by Rocky »

Ah, good to hear. Thank you.

You probably noticed most of the goodness for PQ is at the top end of the range for white and it is nonlinear. HLG in contrast works much better and feels linear. I'm going to try linearizing the PQ parameter range, it's a GUI issue and a functional one, because we are lacking granularity at the top end.
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Bullwinkle
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Re: HDR -> SDR conversion

Post by Bullwinkle »

Gonna tonemap the white parameter space, eh, Rock? Whoop.
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Rocky
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Re: HDR -> SDR conversion

Post by Rocky »

Everything released in slipstream 188. Note that the PQ white range is now 1-3000 to give some more granularity at the top end (PQ white range not yet linearized).
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zys4416
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Re: HDR -> SDR conversion

Post by zys4416 »

Cool!!!!

I have tested my HLG sources, the result is pretty perfect by now.

I will try more samples, this is very exciting!

btw, new 'Enable HDR to SDR' GUI is easy to use ;-)
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Rocky
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Re: HDR -> SDR conversion

Post by Rocky »

Thrilled that you like it! Thank you for the feedback.
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Bullwinkle
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Re: HDR -> SDR conversion

Post by Bullwinkle »

Hey Rocky, are you sure you are implementing the BT.2390 EETF correctly (see Figure 20)? That's how we should scale for target brightness in PQ, not just change the multiplier for the EOTF. Perhaps that would give a more linear feel. People say I have that linear feel. Meese rule, and, you know, hoomans drool! You know it's true.
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Rocky
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Re: HDR -> SDR conversion

Post by Rocky »

Wow Bullwinkle. What would we do without you!? Here we go. Whee!
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Bullwinkle
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Re: HDR -> SDR conversion

Post by Bullwinkle »

That's nothing Rocky watch me pull a rabbit out of my hat...
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tormento
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Re: HDR -> SDR conversion

Post by tormento »

Out of curiosity, DGHDRtoSDR uses Reinhard, right?
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Rocky
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Re: HDR -> SDR conversion

Post by Rocky »

Yes, it does.
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tormento
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HDR -> SDR conversion

Post by tormento »

Where can I find DGHDRtoSDR latest release?

On main site I can download 1.13 only.

Do you plan to integrate the plugin into DGDecodeNV dll?
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Rocky
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HDR -> SDR conversion

Post by Rocky »

Fixed the main web page menu for 1.14. Thank you for pointing that out.

Haven't any plans to incorporate it into DGDecodeNV.dll as I want to keep it free.
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tormento
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HDR -> SDR conversion

Post by tormento »

Rocky wrote:
Mon Mar 22, 2021 8:57 am
Fixed the main web page menu for 1.14. Thank you for pointing that out.
:hat:
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