HDR -> SDR conversion

Post by **Rocky** » Wed Sep 18, 2019 9:42 am

Umm, OK.

I fixed a small bug in DGIndexNV in the test package, so please re-download and update for testing.

Post by **Rocky** » Wed Sep 18, 2019 9:49 am

Found some more bugs. Temporarily withdrawing. Standby...

Post by **Rocky** » Wed Sep 18, 2019 9:54 am

OK, hlg_test.rar is back online so re-download and update DGIndexNV. Have at it!

DJATOM · Post by **DJATOM** » Wed Sep 18, 2019 10:57 am

I've tuned Meari sample to match mpv's output (slightly brighter, but looks better for me)

Post by **Rocky** » Wed Sep 18, 2019 11:31 am

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.

Post by **Bullwinkle** » Wed Sep 18, 2019 11:49 am

Gonna tonemap the white parameter space, eh, Rock? Whoop.

Post by **Rocky** » Sun Sep 22, 2019 10:21 am

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).

zys4416 · Post by **zys4416** » Mon Sep 23, 2019 1:28 am

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

Post by **Rocky** » Mon Sep 23, 2019 8:35 am

Thrilled that you like it! Thank you for the feedback.

Post by **Bullwinkle** » Wed Sep 25, 2019 8:12 pm

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.

Post by **Rocky** » Thu Sep 26, 2019 10:01 pm

Wow Bullwinkle. What would we do without you!? Here we go. Whee!

Post by **Bullwinkle** » Thu Sep 26, 2019 10:03 pm

That's nothing Rocky watch me pull a rabbit out of my hat...

tormento · Post by **tormento** » Fri May 15, 2020 5:59 am

Out of curiosity, DGHDRtoSDR uses Reinhard, right?

Post by **Rocky** » Fri May 15, 2020 6:58 am

Yes, it does.

tormento · Post by **tormento** » Mon Mar 22, 2021 4:55 am

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?

Post by **Rocky** » Mon Mar 22, 2021 8:57 am

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.

tormento · Post by **tormento** » Mon Mar 22, 2021 10:34 am

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

50vince50 · Post by **50vince50** » Sun May 09, 2021 2:00 pm

DG, Rocky, a few words to thank you for this excellent filter (using it with AVS) !!!

Post by **Rocky** » Sun May 09, 2021 2:48 pm

Thank you 50vince50 (LOL) and welcome to the forum!

Post by **Rocky** » Sun May 09, 2021 5:59 pm

Rocky wrote: ↑
Mon Mar 22, 2021 8:57 am
Haven't any plans to incorporate it into DGDecodeNV.dll as I want to keep it free.

Re-thinking may be in order.

Post by **Rocky** » Thu May 13, 2021 4:17 pm

Just for fun I ran a HDR PQ UHD disk with DGSource/DGHDRtoSDR/DGDenoise on the 3090. It hardly breaks a sweat.

Code: Select all

AVSMeter 3.0.9.0 (x64), (c) Groucho2004, 2012-2021
AviSynth+ 3.7.0 (r3382, 3.7, x86_64) (3.7.0.0)

Number of frames:                   201901
Length (hh:mm:ss.ms):         02:20:20.954
Frame width:                          3840
Frame height:                         2160
Framerate:                          23.976 (24000/1001)
Colorspace:                           YV12

Frames processed:                   4800 (0 - 4799)
FPS (min | max | average):          49.09 | 77.08 | 73.97
Process memory usage (max):         552 MiB
Thread count:                       27
CPU usage (average):                6.3%

GPU usage (average):                53%
VPU usage (average):                18%
GPU memory usage:                   2018 MiB
GPU Power Consumption (average):    243.4 W

Time (elapsed):                     00:01:04.893

Guest · Post by **Guest** » Fri May 14, 2021 4:51 am

Now you need storage for that speed (indexing and demuxing)

Post by **Rocky** » Fri May 14, 2021 7:38 am

Yeah, the 2TB SSD is almost full with ripped disks.

tormento · Post by **tormento** » Mon Jul 04, 2022 5:04 am

Is there any way to have chroma 4k 4:2:0 to chroma 1080p 4:4:4 done in CUDA?

It would be nice to have when resizing from DGSource.

Post by **Rocky** » Mon Jul 04, 2022 8:27 am

Can you please explain the use case and justification for this request?