[Data-modeling] New properties for the "Visual Art" domain "Color" type

[Ed Laurent]

Great job Faye! Your model even addresses ROY G BIV's first initial (i.e.,
wavelength and frequency range). Do your properties apply only to
frequencies of light and not to the pigments that reflect it? For example,
how would you use this information to whip up a can of red paint?

I agree with you that some reds are red no matter how detailed the
description. A user can accurately specify red as a property and not need to
know red's physical properties to do so, but the link should take them to
that information if they desire. If we take Gordon's approach instead, how
big is the box of Crayolas that is used to single out simple colors without
detailed properties and what property do you use to distinguish the the
simple color scheme from the complex one? Is it only the domain they are in?

Similarly, conflicts in naming conventions might be an issue. How do you
handle two interpretations of "Blood Red"? Can there be a link to the namer
or naming convention publication?

-Ed


On Tue, Jun 10, 2008 at 4:50 AM, Faye Li <faye at metaweb.com> wrote:

> Interesting idea.
>
> The properties I added are all taken from the Wikipedia infobox for colors.
> See "Red" here:
> http://en.wikipedia.org/wiki/Red
>
> Are you saying that we should model "casual" uses of color separately from
> scientific or professional uses of color? Although the current Color type
> has carried no properties, it's used as a property's expected type in quite
> a few types: sport teams, fraternities/sororities, and material in fiction,
> etc. These everyday usage examples of color are not so concerned with the
> scientific side of color science as say, a visual device manufacturer. I'm
> open to expanding and exploring the color data into a full-fledged domain on
> its own, but I think it makes sense to have only one "Red" topic for the
> color to carry all its information, regardless of where it is.
>
> -- Faye
>
>
> ----- Original Message -----
> From: "Gordon Mackenzie" <gordon at metaweb.com>
> To: "Freebase data modeling mailing list" <data-modeling at freebase.com>
> Sent: Tuesday, June 10, 2008 1:28:09 AM (GMT-0800) America/Los_Angeles
> Subject: Re: [Data-modeling] New properties for the "Visual Art" domain
> "Color" type
>
> I think maybe Color should be it's on domain, a Visual Perception Domain?
> These properties look more appropriate to an Energy/Wavelengths?
>
> Here's a little somethin I was messing with earlier:
>
> http://www.freebase.com/view/user/gmackenz/color
>
> Color schemes, color systems, theories/models.
>
> Additive and Subtractive color methods for different media (printing,
> video, etc.)
>
> http://www.freebase.com/view/user/gmackenz/color/color_type
>
> ----- Original Message -----
> From: "Faye Li" <faye at metaweb.com>
> To: data-modeling at freebase.com
> Sent: Tuesday, June 10, 2008 12:54:11 AM (GMT-0800) America/Los_Angeles
> Subject: [Data-modeling] New properties for the "Visual Art" domain "Color"
> type
>
> Hi,
>
> In response to user spatialed's suggestion (from a while back), I've
> finally gotten to adding some properties to the empty "Color" type on
> Sandbox for review:
>
> http://sandbox.freebase.com/tools/schema/visual_art/color
>
> 1) Wavelength Range (nm), expected type "Integer Range", for spectral
> wavelength range of the color, in nanometers.
> 2) Frequency Range (THz), expected type "Integer Range", for spectral
> frequency range of the color, in terahertz.
> 3) sRGB Value, expected type (new type) "RGB Representation", for 24-bit
> RGB representation of the color. Valid range is 0-255 inclusive for each
> dimension.
> 4) Hex Triplet, expected type "Machine readable string", for 6-digit RGB
> value in hex with the conventional pound sign # as a prefix.
>
> All properties have the "restrict to one value" option checked.
>
> As an example, I've filled out the "Red" topic with values from Wikipedia:
> http://sandbox.freebase.com/view/en/red
>
> For now, I've left out HSV hexacone and CIE XYZ color spaces (what, you
> can't convert color representations between color spaces in your head?), but
> if desired, they can be modeled without too much effort.
>
> Thanks,
> -- Faye
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