Re: 1 billion colors
Re: 1 billion colors
- Subject: Re: 1 billion colors
- From: Wire ~ via colorsync-users <email@hidden>
- Date: Mon, 6 Jan 2020 14:22:20 -0800
Is the point is to proffer awareness that RGB coding is far from
perceptually uniform?
Ya it's exactly this attribute that necessitates the extra bits.
Integer RGB is a mechanical space. Pull a bit lever and cause a stimulus
change from the device.
It so happens—as Florian points out—that synthetic single channel data—the
kind that test charts are made of—exposes a weakness in the coding that
ultimately is overcome by adding channel bits. This over-provisions other
parts of the space. OK. So...? What do you think this says about the format
and future directions of tech?
As to this parsing about actual colors, consider an experiment where you
take your palette of 200k distinct colors in RGB and uniformly add/subtract
some small number to their values with results within the 16 million range
of the space then place this adjusted set side-by-side with the original
and see if you can discern the difference? If you can, what would this say
about the necessity of the bigger range?
On Mon, Jan 6, 2020 at 13:36 Roger Breton via colorsync-users <
email@hidden> wrote:
> Well, Andrew, just to push the discussion further, I would *love* to hear
> what Steve Upton would have to say about “unique colors” since he’s the one
> that wrote the application: what numerical criteria does Steve use in
> ColorThink to distinguish among “unique colors”?
>
>
>
> In the meantime, I’m willing to buy 208,486 😊
>
>
>
> / Roger
>
>
>
> From: Andrew Rodney <email@hidden>
> Sent: Monday, January 6, 2020 4:31 PM
> To: <email@hidden> <email@hidden>; Andrew Rodney via
> colorsync-users <email@hidden>
> Subject: Re: 1 billion colors
>
>
>
> Got a copy of ColorThink Pro?
>
> Take the TIFF, load it into that product, Extract all unique color values
> into a color list. What do you get?
>
> I get 208486.
>
> Then use Convert all colors to list, what do you get?
>
> I get 250000
>
>
>
> You got a silly answer ("1 is missing") but there are tools to actually
> analyze such a document without the need to assume.....
>
>
>
> Andrew Rodney
>
> http://www.digitaldog.net/
>
>
>
>
>
> On Jan 6, 2020, at 1:58 PM, Roger Breton via colorsync-users <
> email@hidden <mailto:email@hidden>
> > wrote:
>
>
>
> Is anyone able to discriminate between the 16.7 million colors in this
> 24-bit RGB image?
>
> https://1drv.ms/u/s!AkD78CVR1NBqko8JmNRgIB2qvxz-iA?e=7il8Xk
>
> Be honest.
>
> / Roger
>
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