Re: 1 billion colors
Re: 1 billion colors
- Subject: Re: 1 billion colors
- From: Andrew Rodney via colorsync-users <email@hidden>
- Date: Mon, 6 Jan 2020 15:33:04 -0700
> On Jan 6, 2020, at 3:22 PM, Wire ~ via colorsync-users
> <email@hidden> wrote:
>
> Is the point is to proffer awareness that RGB coding is far from
> perceptually uniform?
Nope.
> Ya it's exactly this attribute that necessitates the extra bits.
You still need to tie bits (numbers) and colors into understanding. They are
not the same.
> Integer RGB is a mechanical space. Pull a bit lever and cause a stimulus
> change from the device.
You're making this far more confusing then you need to.
> 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?
Off topic,
> 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?
You're making this far more confusing than you need to. Numbers can be colors,
numbers may not be colors. Colors are visible. Some numbers are not. Simple.
There are not 1 billion colors. There are 1 billion numbers. Understand?
Andrew Rodney
http://www.digitaldog.net/ <http://www.digitaldog.net/>
> 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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