# US 2014/0152866 A1 · Ranking color correction processes

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- Number: US 2014/0152866 A1
- Document ID: US20140152866A1
- Status: Published application
- Kind: A1
- Application number: 14/131,491
- Filed: 2011-07-11
- Published: 2014-06-05
- Earliest claimed: 2011-07-11
- Inventors: Ren Wu; Yu-Wei Wang
- Web page: https://patentgrep.com/patent/US20140152866A1

## CPC

- H04N 1/6077: {Colour balance, e.g. colour cast correction}
- H04N 1/6086: {by scene illuminant, i.e. conditions at the time of picture capture, e.g. flash, optical filter used, evening, cloud, daylight, artificial lighting, white point measurement, colour temperature}
- H04N 5/262: Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects {; Cameras specially adapted for the electronic generation of special effects}
- H04N 23/88: for colour balance, e.g. white-balance circuits or colour temperature control
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

Systems and methods of ranking color correction processes are disclosed. An example method includes processing subimages of an image using a plurality of color correction processes. The method also includes ranking the plurality of results of color correction processes across the subimages. The method also includes applying color correction to the image based on the ranking of the color correction processes.

## Claims

### Claim 1

A method of ranking color correction processes in imaging devices, comprising,
processing subimages of an image using a plurality of color correction processes;
ranking the plurality of results of color correction processes across the subimages; and
applying color correction to the image based on the ranking of the color correction processes.

### Claim 2 (depends on 1)

The method of claim 1, wherein processing subimages includes applying color correction processes to the subimages to obtain color correction results.

### Claim 3 (depends on 1)

The method of claim 1, wherein a degree of influence each color correction process contributes to applying color correction to the image is based on the ranking.

### Claim 4 (depends on 1)

The method of claim 1, wherein ranking the color correction processes is based on statistical analysis of results from processing the subimages by the color correction processes.

### Claim 5 (depends on 1)

The method of claim 1, wherein ranking the color correction processes is based on a function f(W, F) where F is results from processing the subimages by each color correction process, and W is a set of parameters.

### Claim 6 (depends on 5)

The method of claim 5, further comprising determining W from a labeled dataset and optimizing W using machine learning.

### Claim 7

A system for ranking color correction processes, comprising program code stored on non-transient computer readable media and executable on a processor in an imaging device to:
process subimages using a plurality of color correction processes;
rank color correction processes across the subimages; and
apply color correction to an image comprising the subimages based on the ranking of the color correction processes.

### Claim 8 (depends on 7)

The system of claim 7, further comprising adjusting voting power of each color correction process based on a ranking, the ranking determining a degree of influence each color correction process contributes to a final color correction process.

### Claim 9 (depends on 7)

The system of claim 7, wherein each color correction process is ranked for use in color correction using the same image being analyzed.

### Claim 10 (depends on 7)

The system of claim 7, wherein the subimages include both wide angle crops and telephoto crops of the same image.

### Claim 11 (depends on 7)

The system of claim 7, wherein a ranking of the color correction processes is based on results from processing the subimages by the color correction processes.

### Claim 12 (depends on 7)

The system of claim 7, wherein a ranking of the color correction processes is based on statistical analysis of results from processing the subimages by the color correction processes.

### Claim 13 (depends on 7)

The system of claim 7, wherein a ranking of the color correction processes is based on a function f(W, F) where F is the results from processing the subimages by each color correction process, and W is a set of parameters.

### Claim 14

A camera system with ranking color correction processes, comprising:
an image processing module to process subimages with a plurality of color correction processes;
a ranking module to rank color correction processes across the subimages; and
a rendering module to apply color correction to an image based on the ranking of the color correction processes, the amount of influence each color correction process contributes to a final color correction process is based on the ranking.

### Claim 15 (depends on 14)

The system of claim 14, wherein the subimages are wide angle crops and telephoto crops of the image.