Computer graphics processing and selective visual display system – Computer graphics processing – Graph generating
Reexamination Certificate
1998-10-21
2001-05-22
Brier, Jeffery (Department: 2672)
Computer graphics processing and selective visual display system
Computer graphics processing
Graph generating
C345S426000, C345S427000
Reexamination Certificate
active
06236406
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to the display of color spaces. More specifically, the present invention relates to the three-dimensional display of color spaces.
BACKGROUND
Color may be the one of the most straightforward features utilized by humans for visual recognition and discrimination. The term “color” is often defined by such common terms as hue, saturation (also referred to as chroma), and value (also referred to as intensity or luminance) which are used to represent a particular color space. A color space is merely a representation of the different colors or color elements which comprise the respective color space.
Typically, each color space (or color gamut) is comprised of three elements which define the color space, as such, the three elements constituting the color space define the physical color space representation. Accordingly, there are a number of different theoretical physical color space representations (e.g., cubes, cones, etc.) for each individual color space. For instance, an RGB (red, green, and blue) color space may be theoretically represented as a cube, or more commonly referred to as an RGB cube. Likewise, an HSV(hue, saturation, and value) color space may be theoretically represented as a hexagonal cone, or more commonly referred to as an HSV hexcone.
The usage and representation of different color spaces is very important for those persons engaged in the field of performing color/image comparisons and analysis, such as for example, color comparisons utilized in content based searches. The graphical physical display or representation of various color spaces on a physical display system (e.g., graphic user interface (GUI) or monitor), however, has proposed a dilemma in that the various color spaces are typically represented as two different graphical components or graphical representations. For instance, a typical graphical user interface (GUI)
100
, as illustrated in
FIG. 1
, for the viewing of the HSV color space is represented as two distinct graphical components, a first two-dimensional graphical component
105
that comprises a hue (H) element
110
and a saturation (S) element
115
of the corresponding HSV color space, and a second one-dimensional graphical component
120
that comprises a value (V) element
125
of the corresponding HSV color space.
As such, the currently used graphical representations, illustrated in
FIG. 1
, fail to provide a global picture of the various color elements within a color space. Moreover, the currently used graphical representations of color spaces fail to illustrate how the different color elements within a particular color space inter-relate to one another. As a result, the current representation of different color spaces on a display medium is very limited, resulting in color/imaging analysis limitations for those persons engaged in the field of color/image comparisons and analysis.
It is therefore desirable to provide graphical representations of color spaces which provide a global picture of the various color spaces used for performing color/image comparisons.
SUMMARY OF THE INVENTION
An embodiment of the present invention provides for a method of generating a global three-dimensional representation of a color space. Initially, the color elements associated with a color space are quantized. A three-dimensional color space frame model is generated based upon the color space. The quantized color elements are mapped to the three-dimensional color space frame model. Accordingly, perspective parameters are used to manipulate the three-dimensional color space frame model to provide different three-dimensional views of the three-dimensional color space frame model.
Another embodiment of the present invention provides for a computer readable medium containing executable instructions which, when executed in a processing system, causes the processing system to perform the steps of a method for generating a global three-dimensional representation of a color space. Initially, the color elements associated with a color space are quantized. A three-dimensional color space frame model is generated based upon the color space. The quantized color elements are mapped to the three-dimensional color space frame model. Accordingly, perspective parameters are used to manipulate the three-dimensional color space frame model to provide different three-dimensional views of the three-dimensional color space frame model.
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Blakely , Sokoloff, Taylor & Zafman LLP
Brier Jeffery
Havan Thu-Thao
Sony Corporation
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