Artists' color display system

• US 8,089,482 B1
• Filed: 03/06/2009
• Issued: 01/03/2012
• Est. Priority Date: 09/30/2002
• Status: Active Grant

• Current Assignee: Dale Axelrod
• Original Assignee: Dale Axelrod
• Inventors: Axelrod, Dale
• Primary Examiner(s): CASCHERA, ANTONIO A
• Application Number:
  US12/381,216
• Time in Patent Office: 1,033 Days
• Field of Search: None
• US Class Current: 345/440
• CPC Class Codes: G01J 3/522 circular colour charts
• CPC Class Codes: G06T 11/001 Texturing; Colouring; Generation of texture or colour inpainting G06T5/77
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

An assortment of color elements is grouped within a plurality of color families which are organized in accordance with a bi-radial circular color chart (FIG. 10-A) and a columnar chart (FIG. 11-A). Except for the neutral-gray color family, a pair of boundary-hues respectively defines the extent of acceptable hue variation within each group, resulting in an included range of hue within each color family, and an excluded range of hue in between neighboring color families. A color map (FIG. 17-A) serves as an index for matching system color elements to various color media and mixing formulas. Variant-hue charts enhance color comparison and selection within each main color family by displaying variations of all three color attributes, that is, value, saturation, and hue, within a single chart. Variant-hue charts also consolidate color elements into a compact format, and provide a graphical user interface for computer color selection.

Claims

1. A method of creating a color chart for use on a computer screen or other color output device in defining, formulating, organizing, comparing, and selecting colors, comprising:

(a) organizing, by said computer screen or other color output device in a columnar chart, a series of columns for respectively grouping a plurality of uniformly sized color elements of a constant hue, said columns being uniform in height and sequentially arranged for grouping said color elements according to a predetermined range of prescribed, relatively declining saturation levels from most-saturated at one side to zero-saturation at the other, and

(b) organizing, by means of said columnar chart, said color elements arranged within each of said respective columns sequentially light to dark from top to bottom according to relative value levels, and

(c) defining such sequential value arrangement of said color elements within each respective column to be relative only to other of said color elements within the same respective column,

whereby the value levels of said color elements in any one column are independent of the value levels of said color elements in any other column, and such independence allows the arrangement and range of values within said columnar chart to be variably tailored to the characteristics of the specific constant hue of said color elements.

2. The method of claim 1, wherein one but no more than two of said columns of declining saturation exceed one or more of the other of said columns in said columnar chart in height by one color element at each end,

whereby one or two columns containing a larger number of color elements of declining saturation provides a wider value range in said columnar chart.

3. The method of claim 2, wherein the column containing the largest number of color elements of said columns is a neutral-gray scale having zero-saturation, comprising the achromatic color elements including black and white.

4. A columnar chart for use in defining, formulating, organizing, comparing, and selecting colors, on a computer screen or other color output device, comprising:

(a) a series of columns respectively grouping a plurality of uniformly sized color elements of a constant hue on said computer screen or other color output device, said columns sequentially arranged for grouping said color elements according to a predetermined range of prescribed relative saturation levels, in descending order, from strong moat-saturated to zero-saturation, and

(b) said constant hue selected from the general hue sectors of the visible spectrum from the group consisting of red, red-orange, orange, yellow-orange, yellow, yellow-green, green, blue-green, blue, blue-violet, violet, and red-violet, and

(c) said color elements arranged within each of said respective columns sequentially light to dark from top to bottom according to relative value levels, and

(d) said sequential value arrangement of said color elements within each respective column relative only to other of said color elements within the same respective column,

whereby the value levels of said color elements in any one column are independent of the value levels of said color elements in any other column, and such independence allows the arrangement and range of values within said columnar chart to be variably tailored to the value characteristics of the particular constant hue of said color elements.

5. The columnar chart of claim 4, further comprising:

(a) a class of colorants used to create colorant mixture gamuts for selecting said plurality of color elements,

(b) a plurality of collections of selected color elements generated by sampling a plurality of colors at a plurality of sampling points within said colorant mixture gamuts,

(c) said sampling points determined at a plurality of value levels with regard to respectively representing a range of the relatively most strongly-saturated, visually distinguishable color elements within each of said plurality of prescribed relative saturation levels,

(d) said collections of selected color elements arranged within a plurality of constant-hue charts, each of said constant-hue charts organized in columns corresponding to said columnar chart,

whereby each constant-hue chart, exhibiting strongly saturated, yet distinguishable color elements within each level of saturation configures an assortment of color elements which is so substantially clustered, in degree of saturation, around the most fully saturated color elements of the general hue sectors of the visible spectrum, that the color elements therein may be characterized as being near primaries.