[opendtv] Re: New Chips Improve Color TV Dramatically
- From: "Alan Roberts" <roberts.mugswell@xxxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Mon, 28 Jun 2004 22:26:14 +0100
Nevertheless, there really are only minor differences, on whatever
chromaticity system you use. And remember that chromaticity difference
visibility depends on luminance, so no chromaticity system can be truly
matched to the eye. That's one of the unfortunates of colour science.
----- Original Message -----
From: "Mark Schubin" <tvmark@xxxxxxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Monday, June 28, 2004 6:24 PM
Subject: [opendtv] Re: New Chips Improve Color TV Dramatically
> >
> >
> >1 NTSC 1953: R=(0.670,0.330) G=(0.210,0.710) B=(0.140,0.080)
> >2 SMPTE RP145: R=(0.630,0.340) G=(0.310,0.595) B=(0.155,0.070)
> >3 EBU T.3213: R=(0.640,0.330) G=(0.290,0.600) B=(0.150,0.060)
> >4 ITU R.709: R=(0.640,0.330) G=(0.300,0.600) B=(0.150,0.060)
> >5 (e-)sRGB: R=(0.640,0.330) G=(0.300,0.600) B=(0.150,0.060)
> >6 AdobeRGB: R=(0.640,0.330) G=(0.210,0.710) B=(0.150,0.060)
> >
> >Note that the primaries
> >vary only insignificantly between these 3 standards!
> >
> I do not dispute that there is only minor variation between the
> primaries for 2-4, but I dispute that the chart allows us to come to
> that conclusion. These coordinates are not on a perceptually linear
space.
>
> TTFN,
> Mark
>
>
>
>
>
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