# US 2010/0165149 A1 · Opponent Color Detail Enhancement for Saturated Colors

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- Number: US 2010/0165149 A1
- Document ID: US20100165149A1
- Status: Published application
- Kind: A1
- Application number: 12/347,272
- Filed: 2008-12-31
- Published: 2010-07-01
- Earliest claimed: 2008-12-31
- Assignees: Apple Inc.
- Inventors: Mark Zimmer
- Web page: https://patentgrep.com/patent/US20100165149A1

## CPC

- H04N 1/6027: {Correction or control of colour gradation or colour contrast (H04N1/6058 takes precedence)}
- H04N 1/648: {Transmitting or storing the primary (additive or subtractive) colour signals; Compression thereof (H04N1/642 - H04N1/646 take precedence)}
- H04N 23/86: for controlling the colour saturation of colour signals, e.g. automatic chroma control circuits
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A method, system and device for enhancing detail in areas of saturated color in an image are described. As areas of saturated color are detected in an image the opponent color channel is used to calculate a factor to apply to the original pixel value. By calculating this factor to adjust the pixel values of the image detail may be enhanced in the color saturated areas. A user supplied value may also be included to control the amount of automatic adjustment to the pixel values.

## Claims

### Claim 1

A method of image processing comprising:
determining an area of saturated color in an input image;
identifying the opponent color of the saturated color at this location of the input image;
calculating an interpolant factor to apply when combining a processed color image and a luminance image; and
applying this interpolant factor to each appropriate location of a combination of the two input images to produce an output image result.

### Claim 2 (depends on 1)

The method of claim 1 wherein the opponent color is used to increase the amount of perceivable detail in areas of saturated color.