METHOD AND SYSTEM FOR COLOR ENHANCEMENT WITH COLOR VOLUME ADJUSTMENT AND VARIABLE SHIFT ALONG LUMINANCE AXIS

• US 20100141671A1
• Filed: 12/10/2008
• Published: 06/10/2010
• Est. Priority Date: 12/10/2008
• Status: Active Grant

• Current Assignee: NVIDIA Corporation
• Original Assignee: NVIDIA Corporation
• Inventors: Chrysafis, Christos, Dutta, Santanu
• Granted Patent: US 8,373,718 B2
• Time in Patent Office: Days
• US Class Current: 345/589
• CPC Class Codes: G09G 2340/06 Colour space transformation
• CPC Class Codes: G09G 2340/10 Mixing of images, i.e. displayed pixel being the result of an operation, e.g. adding, on the corresponding input pixels
• 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
• CPC Class Codes: G09G 5/026 Control of mixing and/or overlay of colours in general G09G5/022 and G09G5/024 take precedence

Abstract

Embodiments of the claimed subject matter provide a system and process for enhancing the display of color in a graphical display. In one embodiment, a process is provided for color enhancement using a detection volume and a shift volume. In one embodiment, input from pixels, as color data, is compared to a detection volume. If the color data of an input is detected in the detection volume, the color data is modified to a corresponding position in the shift volume, the modification consisting of an enhancement to the original color.

Claims

1. A method of color enhancement using a detection volume and a shift volume, said method, comprising:

receiving color data for a plurality of pixels, color data for a pixel comprising a luminance value and a set of chromatic values;

translating a set of chromatic values for a pixel into a first position in a color coordinate plane, said color coordinate plane corresponding to said luminance value;

comparing said first position of said pixel to said detection volume;

shifting said first position of said pixel to a second position if said first position is detected in said detection volume, said second position comprised in a shift volume, wherein said detection volume and said shift volume are variable along a luminance axis; and

displaying said plurality of pixels.

2. The method according to claim 1, further comprising:

constructing said detection volume by interpolating a detection volume from a first detection region having a first luminance value and a second detection region having a second luminance value, said detection volume comprising said first detection region, said second detection region, and a plurality of detection regions having a plurality of luminance values between said first luminance value and said second luminance value; and

constructing said shift volume by interpolating a shift volume from a first shift region having said first luminance value and a second shift region having said second discrete luminance, said shift volume comprising said first shift region, said second shift region, and a plurality of shift regions having said plurality of luminance values.

3. The method according to claim 1, wherein shifting a first position of a pixel in said plurality of pixels comprises:

determining a detection region in said detection volume comprising an equivalent luminance value with said luminance value corresponding to said pixel;

determining a location of said first position in said detection region corresponding to said set of coordinates in said color coordinate plane of said color data;

determining the location of said second position in a shift region corresponding to said detection region; and

modifying said set of coordinates to represent said second position, wherein said second position comprises a displacement in said color coordinate plane from said first position.

4. The method according to claim 1, wherein:

a detection region comprised in said detection volume comprises a first plurality of positions in a color coordinate plane for a luminance value; and

a shift region comprised in said shift volume comprises a second plurality of positions in a color coordinate plane for said luminance value.

5. The method according to claim 1, wherein:

a detection region for a luminance value comprised in said detection volume has a corresponding shift region comprised in said shift volume for the same luminance value; and

a position in said detection region has a corresponding position in said shift region, said corresponding position comprising a displacement in a color coordinate plane from said position in said detection region.

6. The method according to claim 5, wherein a shift region comprised in said shift volume for a luminance value is arranged in a geometric shape that is similar to a geometric shape of a corresponding detection region comprised in said detection volume for said luminance value.

7. The method according to claim 1, wherein a size of a luminance-specific detection region comprised in said detection volume is variable relative to a size of a luminance-specific shift region comprised in said shift volume along a luminance axis.

8. The method according to claim 7, wherein a size of a detection region is variable relative to a size of a shift region corresponding to said detection region along said luminance axis.

9. The method according to claim 5, wherein a directional orientation of a shift region for a luminance value comprised in said shift volume is variable from a directional orientation of a corresponding detection region for said luminance comprised in said detection volume.

10. A method for constructing a detection volume and a shift volume for color enhancement, comprising:

receiving a first detection area in a first color coordinate plane;

receiving a second detection area in a second color coordinate plane;

defining a first shift area in said first color coordinate plane, said first shift area corresponding to said first detection area;

defining a second shift area in said second color coordinate plane, said second shift area corresponding to said second detection area;

interpolating, from said first detection area and said second detection area, a plurality of detection areas disposed in a plurality of color coordinate planes, said plurality of detection areas constructing a detection volume; and

interpolating, from said first shift area and said second shift area, a plurality of shift areas disposed in said plurality of color coordinate planes, constructing a shift volume, wherein said detection volume and said shift volume are variable along a luminance axis.

11. The method according to claim 10, further comprising:

receiving a third detection area disposed in a third color coordinate plane, said third coordinate plane corresponding to a third discrete luminance between a first discrete luminance corresponding to said first detection area and a second discrete luminance corresponding to said second detection area in a luminance axis; and

defining a third shift area, said third shift area disposed in said third color coordinate plane and corresponding to said third detection area.

12. The method according to claim 11, wherein constructing said detection volume further comprises:

interpolating, from said first detection area, said second detection area and said third detection area;

a first set of detection areas disposed in said plurality of detection areas, said first set of detection areas corresponding to a first plurality of discrete luminance between said first discrete luminance and said third discrete luminance;

a second set of detection areas disposed in said plurality of detection areas, said second set of detection areas corresponding to a second plurality of discrete luminance between said third discrete luminance and said second discrete luminance; and

aggregating said first set of detection areas and said second set of detection areas to form said detection volume.

13. The method according to claim 12, wherein constructing a shift volume comprises:

interpolating, from said first shift area, said second shift area and said third shift area;

a first set of shift areas disposed in said plurality of shift areas, said first set of shift areas corresponding to said first plurality of discrete luminance between said first discrete luminance and said third discrete luminance;

a second set of shift areas disposed in said plurality of shift areas, said second set of shift areas corresponding to said second plurality of; and

aggregating said first set of shift areas and said second set of shift areas to form said shift volume.

14. The method according to claim 10, wherein,

defining a first shift area comprises defining a first shift area having a first displacement relative to said first detection area,

defining a second shift area comprises defining a second shift area having a second displacement relative to said first detection area,

15. The method according to claim 14, wherein said first displacement relative to said first detection area variable from said second displacement relative to said second detection area.

16. In a computer system having a graphical user interface including a display and a user interface selection device, a method of providing color enhancement from an interface on the display, comprising:

displaying a detection volume comprising a plurality of detection regions disposed in a plurality of color coordinate planes, said plurality of color coordinate planes corresponding to an axis of discrete luminance;

displaying a shift volume comprising a plurality of shift regions disposed in a plurality of color coordinate planes, said plurality of color coordinate planes corresponding to an axis of discrete luminance;

receiving an input from said interface on said display, said input indicative of a modification to a detection region comprised in said detection volume and a modification to a shift region comprised in said shift volume;

modifying said detection volume and said shift volume to correspond to said input; and

storing said input in a memory.

17. The system according to claim 16, wherein said modifying of said detection volume comprises interpolating said modification to said detection region throughout said detection volume.

18. The system according to claim 16, wherein said modifying of said detection volume comprises interpolating said modification to said shift region throughout said shift volume.

19. The system according to claim 16, wherein said display displays said detection volume and said shift volume.

20. The system according to claim 16, wherein said display displays a color coordinate plane comprising a detection region comprised in said detection volume and a shift region comprised in said shift volume for a discrete luminance.