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

[Faye Li]

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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