Search found 36 matches

by dmcs
Sat May 12, 2018 5:23 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 591
Views: 687584

Re: HDR -> SDR tonemapping

Thank you so much for your work.
From my initial tests, I've experienced some heavy banding with the "equal" value being anything other than 0.
Screenshots:
76073a.png
76073b.png
81439a.png
81439b.png
by dmcs
Fri Apr 13, 2018 4:08 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 591
Views: 687584

Re: HDR -> SDR tonemapping

I have a question. In the DGTonemap's manual, the formula for Hable is

Code: Select all

hable(x) = ((x*(a*x+c*b)+d*e) / (x*(a*x+b)+d*f)) - e/f
Can you tell me what the "x" variable means? Thank you.
by dmcs
Mon Mar 26, 2018 8:05 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 591
Views: 687584

Re: HDR -> SDR tonemapping

I feel like without an HDR monitor as a reference, every setting would be a guess-timate. Trying to pick the right setting is quite a challenge. :D
by dmcs
Sun Mar 25, 2018 12:38 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 591
Views: 687584

Re: HDR -> SDR tonemapping

I mess around the "bright" parameter, but cannot see any difference between the values (default, 1.0, 5.0). Not sure where I did wrong. Here's my script: DGSource("br2049.dgi", crop_t=280, crop_b=280, fulldepth=true).Spline36Resize(1920, 800) z_ConvertFormat(pixel_type="RGBPS", colorspace_op="2020nc...
by dmcs
Sun Mar 25, 2018 9:57 am
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 591
Views: 687584

Re: HDR -> SDR tonemapping for DGDecodeNV

OK, boys and girls, please re-download to get DGTonemap 1.1. It should significantly improve the whites and be much closer to the SDR versions. You can tweak it further if desired using the contrast and bright parameters. Thank you for the update. Could you please tell me the default values of "con...
by dmcs
Sun Mar 25, 2018 12:36 am
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 591
Views: 687584

Re: HDR -> SDR tonemapping for DGDecodeNV

Nginx wrote:
Sat Mar 24, 2018 9:47 pm
BTW, is "debug=True" in DGSource removed?
I think it's "show=true" is what you're looking for.