Talk:YDbDr

Gamma and RGB

There's no mention in this of gamma, or chromaticity references for the original RGB colour space... does anyone have a reference for this? -- Karada 10:38, 10 June 2006 (UTC)[reply]

PAL-N and YDbDr

The article reads: There is also a variety of the PAL broadcasting standard, PAL-N, that uses the YDbDr colour space.

Does anyone have a reference for this? Googling for "PAL-N" YDbDr only brings up this article. MrTroy 21:27, 11 July 2006 (UTC)[reply]

I don't know actually, but information on YDbDr in general is pretty hard to find on the internet. So absence of the info doesn't mean it's not true.--Konstable 23:29, 11 July 2006 (UTC)[reply]

But Wikipedia doesn't work by negative proof. Yes, it could be true, but there needs to be a source for that. Wikipedia:Citing sources. MrTroy 06:52, 12 July 2006 (UTC)[reply]

The barn image

Good grief! The Db and Dr panes surely look as though they have a scaling problem – they seem to be saturated in much of their areas to the limit. I suspect that these barn-and-mountain images were not the simplest things to create, so I'll mute my complaint! Regards, 66.92.74.189 (talk) 23:18, 23 May 2009 (UTC)[reply]

Carrying calculations to an excessive number of significant digits

It's not only this article, but also similar ones that discuss various contemporary color spaces. The matrix calculations have a ridiculous number of significant digits, most of which must be meaningless. In cases of quite-small numbers, true, they do show effects of calculation (quite close to zero, but not exactly). Nevertheless, it seems to me that perhaps no more than five significant figures (if even that many) would be quite enough. It's a fairly-common mistake, btw. 66.92.74.189 (talk) 23:24, 23 May 2009 (UTC)[reply]

That is not longer true for ICTCP, e.g. ITU-T H. Supplement 18 specifies 15 digits after decimal. 109.252.94.59 (talk) 19:29, 18 January 2021 (UTC)[reply]