EP0546773B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Graphical user interface for editing a palette of colours
Assignee: Xerox Corp
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Filing: 1992-12-04
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Granted: 1996-12-11
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Expires: 2012-12-04
Abstract
No abstract record available.
Inventors
- 👤 Giordano Bruno Beretta
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 05:17
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/048; G06F3/0487; G06F3/0489; G06F3/04897; G06F3/0484; G06F3/04845; G09; G09G; G09G5/00; G09G5/02; G09G5/06; H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6058; H04N1/62
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
205 words
A graphical user interface (GUI) for modifying the appearance of a plurality of colors, said interface being for use in a system having memory means for storing color information signals representing the plurality of colors, and means for displaying the plurality of colors; said graphical user interface including, means for receiving input signals from a user; a color space display window; color space drawing means for drawing a graphical representation of a color space in said color space display window and for drawing the plurality of colors in said color space, each color being drawn in a current location in said color space, said current location having coordinates defined by the color information signals representing each color; and means for modifying one of the plurality of colors drawn in said color space in response to at least one signal received from said input signal receiving means, wherein said modifying means includes moving means for moving the one color from said current location to a destination location in said color space, said destination location having coordinates defining a set of modified color information signals corresponding to a modified color, said color space drawing means drawing said modified color in the destination location in said color space.
Claim 2
Dependent Claim
57 words
The graphical user interface of claim 1, further including a plurality of colorimetrically measured colors stored in the memory means and representing a gamut of reproducible colors of the display means; and wherein said modifying means further includes means for adjusting said set of modified color information signals to produce a reproducible color in said display gamut.
Claim 3
Independent Claim
220 words
A system for modifying a plurality of colors, each color being represented by a set of color information signals; said system comprising display means for displaying the plurality of colors; means for receiving input signals from a user; color modifying processing means, coupled to said input signal receiving means and to said display means; and memory means, in communication with said processing means, for storing therein the color information signals representing the plurality of colors; said color modifying processing means including color space drawing means for drawing on said display means a graphical representation of a color space, and for drawing the plurality of colors in said color space, each color being drawn in a current location in said color space, said current location having coordinates defined by the color information signals representing the respective color; and means for modifying each of the plurality of colors drawn in said color space in response to said input signal receiving means, said modifying means including means for moving one color of the plurality of colors from said current location to a destination location in said color space, said destination location having coordinates defining a set of modified color information signals corresponding to a modified color, said color space drawing means drawing said modified color in the destination location in said color space.
Claim 4
Dependent Claim
221 words
A graphical user interface according to claim 1, or the system of claim 3, for controlling and modifying the appearance of a plurality of colors for reproduction, further including: a gamut of reproducible colors of a color reproduction device, said device gamut defined by a plurality of colorimetrically measured gamut colors, each color thereof being represented by a set of gamut color information signals that are stored in the memory means; and wherein said color space drawing means is adapted for drawing a polygonal gamut boundary in said color space, said boundary having vertices at coordinates defined in said color space by the set of said gamut color information signals for respective ones of said plurality of colorimetrically measured gamut colors; and wherein said modifying means is adapted for modifying one of the plurality of colors drawn in said color space in response to at least one of said input signals to produce signals representing a reproducible color in said colorimetrically measured device gamut; said modifying means further including means for clipping said set of modified color information signals when the location of said modified color is inside said gamut boundary; and means for constraining said modified color in said gamut boundary when the destination location of said modified color moved by said moving means is outside of said gamut boundary.
Claim 5
Dependent Claim
67 words
The graphical user interface of claim 4 further including gamut boundary selection means for selecting said polygonal gamut boundary for display in said color space from a plurality of colorimetrically measured device gamuts, in response to at least one of said input signals, said color space drawing means being responsive to said gamut boundary selection means for drawing said selected polygonal gamut boundary in said color space.
Claim 6
Dependent Claim
56 words
The system of claim 3 further comprising a plurality of colorimetrically measured colors representing the gamut of colors reproducible by said display means, and wherein said modifying means further includes means for adjusting said set of modified colorinformation signals representing said modified color in said color space to represent a reproducible color in said display gamut.
Claim 7
Dependent Claim
58 words
The GUI or system of any of the preceding claims wherein the set of color information signals for each color includes a lightness signal, and wherein said modifying means further includes lightness modifying means for modifying said lightness signal in response to at least one of said input signals to produce said set of modified color information signals.
Claim 8
Dependent Claim
60 words
The GUI or system of any of the preceding claims further including color space selection means for selecting said color space for display on said display window or display means from a plurality of color spaces in response to at least one of said input signals; said color space drawing means drawing said selected color space on said display means.
Claim 9
Dependent Claim
58 words
The GUI or system of any of the preceding claims wherein one of said plurality of color spaces is a lightness frequency distribution color space, and wherein said color space drawing means further includes means for drawing a graphical representation of the plurality of colors according to said lightness signal thereof in said lightness frequency distribution color space.
Claim 10
Dependent Claim
19 words
The GUI or system of any of the preceding claims wherein said color space is a uniform color space.
Claim 11
Independent Claim
188 words
A method for modifying the appearance of a plurality of colors in a color display system having input signal receiving means for receiving signals from a user, a display device, and a memory for storing a set of color information signals corresponding to each color of the plurality of colors, the method comprising the steps of: drawing on the display device a graphical representation of a color space; plotting the plurality of colors in said color space, each color being plotted in a current location in said color space, said current location having coordinates defined by the set of color information signals of each color of the plurality of colors; modifying any one of the plurality of colors in response to signals received from the input signal receiving means, said modifying step including the step of moving the one color from said current location to a destination location in said color space, said destination location having coordinates defining a set of modified color information signals representing a modified color in said color space; and storing said set of modified color information signals in the color display system memory.
Claim 12
Dependent Claim
65 words
The method of claim 11 further including the steps of colorimetrically measuring a plurality of colors representing the gamut of reproducible colors of the display device; and storing said display gamut in the color display system memory; and wherein said modifying step further includes adjusting said set of modified color information signals representing said modified color to represent a reproducible color in said display gamut.
Claim 13
Independent Claim
326 words
A method for interactively controlling and modifying, in a color display system, the color reproduction of a plurality of colors; the color display system having input signal receiving means for receiving signals from a user, a display device, and a memory for storing a set of color information signals representing each color of the plurality of colors; the method comprising the steps of: colorimetrically measuring a gamut of reproducible colors of a color reproduction device, each color thereof being represented by a set of gamut color information signals; storing said colorimetrically measured device gamut in said memory; drawing on said display device a graphical representation of a color space; plotting the plurality of colors in said color space, each color being plotted in a current location in said color space, said current location having coordinates defined by the set of color information signals of each color of the plurality of colors, and plotting a polygonal gamut boundary in said color space, said boundary having vertices at coordinates defined in said color space by the set of said gamut color information signals for respective ones of said plurality of colorimetrically measured gamut colors; modifying any one of the plurality of colors in response to signals received from the input signal receiving means to produce signals representing a reproducible color in said colorimetrically measured device gamut; and storing said set of modified color information signals in said memory; said modifying step including moving the one color from said current location to a destination location in said color space, said destination location having coordinates defining a set of modified color information signals representing a modified color in said color space; clipping said set of modified color information signals when said destination location of said modified color is inside said gamut boundary; and constraining said modified color in said gamut boundary when said destination location of said modified color moved by said moving means is outside of said gamut boundary.
Claim 14
Independent Claim
58 words
The method of any of claims 11 to 13 wherein the set of color information signals of each color includes a lightness signal, and wherein said modifying step further includes a lightness modifying step of modifying said lightness signal, in response to at least one of said input signals, to produce said set of modified color information signals.
Claim 15
Independent Claim
18 words
The method of any of claims 11 to 15 wherein said color space is a uniform color space.
References Cited (Backward Citations)
No citation records indexed.
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