[Feature request] add skin tone line on vectorscope

norihiro / obs-color-monitor

Vectorscope, waveform, and histogram for OBS Studio

GNU General Public License v2.0

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[Feature request] add skin tone line on vectorscope #3

Closed cramaboule closed 3 years ago

cramaboule commented 3 years ago

Describe the solution you'd like Hi Norihiro, Could you add the skin tone line on the vectorscope.

Additional information https://images.app.goo.gl/mEni53irsA5jM6EUA

norihiro commented 3 years ago

Do you have any idea where is the right angle of the skin tone line? I'm surveying but have not found a reliable source. It might depend tools; some tools show lines at around 32 to 34 degrees from the North. I also asked on Stack Exchange but I didn't have answer.

cramaboule commented 3 years ago

What if we think the way around? What is the color reference for skin color? Like: https://www.color-hex.com/color-palette/29434

cramaboule commented 3 years ago

Hi again, from the colorchecker manual p13 : https://www.xrite.com/-/media/xrite/files/manuals_and_userguides/c/o/colorcheckerpassport_user_manual_en.pdf color 1 and 2 are skin tone on my file: https://www.cramaboule.com/download.php?file=pictures.zip I made a colorchecker bmp file. So you can check.

It seems that on DaVinci Resolve it is 34° https://blog.frame.io/2020/10/05/skin-tones-in-davinci-resolve/

norihiro commented 3 years ago

Hi cramaboule, Thank you for your survey. I also checked some sources.

Commercial tools:

33.1° at Final Cut Pro, BT.709.
34.2° at Premiere Pro, BT.709.
31.6° at Pinnacle Studio, BT.709.
33.6° at DaVinci Resolve, BT.709 comment

Color references:

35° and 39° from Xrite color checker
46° average, 32°-55°
37° average, 19°-47° from Pantone SP

Color references look a little biased to yellow. I think around 33.5° (#CBAB99 for example) is the reasonable angle and it's consistent among the industry.

norihiro commented 3 years ago

0.1.6 is released.