From 634d5628c76d5f62c5834ad44539673f5031369b Mon Sep 17 00:00:00 2001
From: Kay Robbins <1189050+VisLab@users.noreply.github.com>
Date: Wed, 21 Feb 2024 13:46:09 -0600
Subject: [PATCH] Added Luminance-contrast as suggested in issue #135

---
 standard_schema/prerelease/HED8.3.0.mediawiki | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/standard_schema/prerelease/HED8.3.0.mediawiki b/standard_schema/prerelease/HED8.3.0.mediawiki
index e85946e3..5b8a6b3e 100644
--- a/standard_schema/prerelease/HED8.3.0.mediawiki
+++ b/standard_schema/prerelease/HED8.3.0.mediawiki
@@ -999,6 +999,8 @@ Each term in this vocabulary has a human-readable description and may include ad
 ****** RGB-green <nowiki>[The green component.]</nowiki>
 ******* <nowiki># {takesValue, valueClass=numericClass} [G value of RGB between 0 and 1.]</nowiki>
 **** Luminance <nowiki>[A quality that exists by virtue of the luminous intensity per unit area projected in a given direction.]</nowiki>
+**** Luminance-contrast <nowiki>{suggestedTag=Percentage, suggestedTag=Ratio}[The difference in luminance in specific portions of a scene or image.]</nowiki>
+***** <nowiki># {takesValue, ValueClass=numericClass}[A non-negative value, usually in the range 0 to 1 or alternative 0 to 100, if representing a percentage.]</nowiki>
 **** Opacity <nowiki>[A measure of impenetrability to light.]</nowiki>
 ** Sensory-presentation <nowiki>[The entity has a sensory manifestation.]</nowiki>
 *** Auditory-presentation <nowiki>[The sense of hearing is used in the presentation to the user.]</nowiki>