RE: purpose of Granger rainbow chart?

• Subject: RE: purpose of Granger rainbow chart?
• From: Mike Eddington <email@hidden>
• Date: Mon, 08 Mar 2010 14:59:31 -0500
• Delivered-to: email@hidden
• Delivered-to: email@hidden

>> >What I meant to say is
> that the function is not smooth (continuously differentiable), and in
> particularly noticeably has a nasty diagonally slanted edge in
> lightness (L*), where the derivative changes abruptly. This visual
> artifact is clearly visible
> <http://www.luminous-landscape.com/images31/Granger_Chart.jpg>.
>> >
>
>
But wouldn't these ²nasty diagonally slanted² edges be a characteristic of
the RGB color space itself rather than an issue with the image data?

Mike
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