Image color correction

Patent metadata

Field	Value
Publication number	US-8929650-B2
Application number	US-201213687370-A
Country	US
Kind code	B2
Filing date	Nov 28, 2012
Priority date	Nov 28, 2012
Publication date	Jan 6, 2015
Grant date	Jan 6, 2015

Abstract

Color-correcting a digital image comprising P pixels (P≧4) is presented. Each of the P pixels has a respective color. Color strengths of the P pixels are determined based at least on respective intensities, respective saturations, or both respective intensities and respective saturations of the P pixels. A subset of the P pixels less than all of the P pixels is determined. The pixels in the subset have respective color strengths in a range of respective color strength. All other pixels of the P pixels have respective color strengths outside of the range of respective color strengths. Color correction is determined for the P pixels based in part on the colors of the respective pixels in the subset which are the only pixels of the P pixels used for determining the color correction. The colors of the P pixels are corrected based on the color correction.

First claim

What is claimed is:

1. A method for color-correcting a digital image comprising P pixels, P being a positive integer of at least 4, each of the P pixels having a respective color, the method comprising;
determining, by one or more processors, color strengths of the P pixels, respectively, based at least on respective intensities, respective saturations, or both the respective intensities and the respective saturations of the P pixels;
determining, by the one or more processors,…

Assignees

• IBM

Inventors

• Brown Lisa M
• Datta Ankur
• Pankanti Sharathchandra U

Classifications

• G06T5/00 Primary

  Physics · mapped topic

• H04N1/6027 Primary

  Electricity · mapped topic

• G06T2207/10024

  Physics · mapped topic

• H04N1/6075

  Electricity · mapped topic

• G06T7/90

  Physics · mapped topic