[css-color-hdr] tweak references

Author: svgeesus

css-color-hdr/Overview.bs

@@ -20,21 +20,21 @@ Abstract: This module explores additions to CSS Color 4 to enable High Dynamic R
 			"date": "3 July 2015",
 			"rawDate": "2015-07-03"
 		},
-		"Rec BT.2100": {
+		"Rec_BT.2100": {
 			"title": "ITU-R BT.2100-2 Image parameter values for high dynamic range television for use in production and international programme exchange",
 			"publisher": "ITU",
 			"href": "https://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.2100-2-201807-I!!PDF-E.pdf",
 			"rawDate": "2018-07-00",
 			"date": "July 2018"
 		},
-		"Rec BT.2390": {
+		"Rec_BT.2390": {
 			"href": "https://www.itu.int/dms_pub/itu-r/opb/rep/R-REP-BT.2390-8-2020-PDF-E.pdf",
 			"title": "ITU-R BT.2390-8 High dynamic range television for production and international programme exchange",
 			"publisher": "ITU",
 			"date": "February 2020",
 			"rawDate": "2020-02-00"
 		},
-		"Rpt BT.2408": {
+		"Rpt_BT.2408": {
 			"href": "https://www.itu.int/dms_pub/itu-r/opb/rep/R-REP-BT.2408-2017-PDF-E.pdf",
 			"title": "Report ITU-R BT.2408-0 Operational practices in HDR television production",
 			"publisher": "ITU",
@@ -106,7 +106,7 @@ Predefined colorspaces for HDR: {#predefined-HDR}
 <dfn export>rec2100-pq</dfn> {#valdef-color-rec2100-pq}
 ---------------------------
 
-	The ''rec2100-pq'' [[!Rec BT.2100]] colorspace accepts three numeric parameters,
+	The ''rec2100-pq'' [[!Rec_BT.2100]] colorspace accepts three numeric parameters,
 	representing the red, green, and blue channels of the color,
 	with each having a valid range of [0, 1]
 	regardless of the actual bit depth (10 or 12 bits per component).
@@ -125,7 +125,7 @@ Predefined colorspaces for HDR: {#predefined-HDR}
 	Issue: should the values accept % as well as number? so 19% as well as 0.19.
 
 	The Perceptual Quantizer (PQ) electro-optical transfer function is used
-	[[SMPTE-ST-2084]],[[!Rec BT.2100]].
+	[[SMPTE-ST-2084]],[[!Rec_BT.2100]].
 	PQ assumes a reference viewing condition
 	where the screen surround
 	is at 5 cd/m².
@@ -187,7 +187,7 @@ Predefined colorspaces for HDR: {#predefined-HDR}
 
 	Issue: add other examples, including encoding of sRGB red, green, blue and P3 red, green, blue.
 
-	Linear-light RGB signals are converted to PQ encoded as follows. An absolute luminance scale is used, so the luminance of diffuse (media) white is required to scale relative luminances. The maximum encodable value (peak, small-area white) in PQ is 10,000 cd/m². Media whte is 203 cd/m² [[!Rpt BT.2408]].
+	Linear-light RGB signals are converted to PQ encoded as follows. An absolute luminance scale is used, so the luminance of diffuse (media) white is required to scale relative luminances. The maximum encodable value (peak, small-area white) in PQ is 10,000 cd/m². Media whte is 203 cd/m² [[!Rpt_BT.2408]].
 
 	<!-- From Froehlich p.42
 		and BT.2100 Table 4 p.4 Reference PQ OETF
@@ -228,19 +228,19 @@ Predefined colorspaces for HDR: {#predefined-HDR}
 <dfn export>rec2100-hlg</dfn> {#valdef-color-rec2100-hlg}
 ---------------------------
 
-	The ''rec2100-hlg'' [[Rec BT.2100]] colorspace accepts three numeric parameters,
+	The ''rec2100-hlg'' [[Rec_BT.2100]] colorspace accepts three numeric parameters,
 	representing the red, green, and blue channels of the color,
 	with each having a valid range of [0, 1]
 	regardless of the actual bit depth (10 or 12 bits per component).
 
 	The Hybrid Log-Gamma (HLG) electro-optical transfer function
-	is used [[ARIB_STD-B67]],[[!Rec BT.2100]].
+	is used [[ARIB_STD-B67]],[[!Rec_BT.2100]].
 	HLG can be used with displays of different brightness
 	in a wide range of viewing environments,
 	with user control of the overall brightness level.
 	A value of 0.75 represents "diffuse" or "media" white
 	while an "18% reflectance grey" card
-	has a value of 0.38. [[!Rec BT.2390]].
+	has a value of 0.38. [[!Rec_BT.2390]].
 
 	It has the following characteristics:
 	(The display primaries are the same as [[!Rec.2020]]):
@@ -278,7 +278,7 @@ Predefined colorspaces for HDR: {#predefined-HDR}
 		</pre>
 	</div>
 
-	Linear-light RGB signals are converted to HLG encoded as follows [[Rec BT.2390]]:
+	Linear-light RGB signals are converted to HLG encoded as follows [[Rec_BT.2390]]:
 
 	<!-- From BT.2390 p.26
 		confirmed with Froehlich p.43
@@ -298,7 +298,7 @@ Predefined colorspaces for HDR: {#predefined-HDR}
 	</pre>
 		Edash is the "gamma-corrected" (OETF-adjusted) signal.
 
-	The reverse conversion (HLG encoded to linear light) is as follows  [[Rec BT.2390]]::
+	The reverse conversion (HLG encoded to linear light) is as follows  [[Rec_BT.2390]]::
 
 	<!-- From BT.2390 p.33
 	-->
@@ -388,7 +388,7 @@ Converting JzCzHz colors to Jzazbz  colors</h4>
 
 	The ''ICtCp'' colorspace
 	is defined as Constant Intensity IC<sub>T</sub>C<sub>P</sub> signal format
-	in [[!Rec BT.2100]] and accepts three numeric parameters,
+	in [[!Rec_BT.2100]] and accepts three numeric parameters,
 	with I representing the Intensity
 	(similar to L in Lab, but covering a luminance range
 	up to 10,000 cd/m<sup>2</sup>)
@@ -419,8 +419,8 @@ Converting JzCzHz colors to Jzazbz  colors</h4>
 		<!-- image state is display-referred? check -->
 	</table>
 
-	Although [[Rec BT.2100]] defines IC<sub>T</sub>C<sub>P</sub>
-	by a conversion from linear-light BT.2100 RGB [[BT.2100]],
+	Although [[Rec_BT.2100]] defines IC<sub>T</sub>C<sub>P</sub>
+	by a conversion from linear-light BT.2100 RGB [[Rec_BT.2100]],
 	this conversion proceds via LMS
 	and thus, any other color space can also be represented
 	by applying an XYZ to LMS transform.
@@ -453,7 +453,7 @@ must map SDR media white
 to the same luminance as is used
 to display the 75% HLG value. [[!SMPTE-ST-2084]]
 
-For further details, see also tables 3 and 4 in ITU Rpt BT.2408-0 [[!Rpt BT.2408]]
+For further details, see also tables 3 and 4 in ITU Rpt_BT.2408-0 [[!Rpt_BT.2408]]
 
 Absolute HDR, using the PQ transfer function,
 should map SDR media white
@@ -651,4 +651,4 @@ Issue: Make some considerations about privacy and security.
 
 <h2 class="no-num" id="a11y">Accessibility Considerations</h2>
 
-Some individuals may have a sensitivity to very bright colors, so user agents should provide a mechanism to limit the maximum luminance at user option. The toe and knee procedure in section 5.4.1 <em>Mapping to display with limited brightness range</em> of [[Rec BT.2390]] is suggested as suitable.
+Some individuals may have a sensitivity to very bright colors, so user agents should provide a mechanism to limit the maximum luminance at user option. The toe and knee procedure in section 5.4.1 <em>Mapping to display with limited brightness range</em> of [[Rec_BT.2390]] is suggested as suitable.