发明授权
US08437053B2 Gamut mapping using hue-preserving color space 有权
使用色相保留颜色空间的色域映射

  • 专利标题: Gamut mapping using hue-preserving color space
  • 专利标题(中): 使用色相保留颜色空间的色域映射
  • 申请号: US12760600
    申请日: 2010-04-15
  • 公开(公告)号: US08437053B2
    公开(公告)日: 2013-05-07
  • 发明人: Christopher J. Edge
  • 申请人: Christopher J. Edge
  • 申请人地址: US NY Rochester
  • 专利权人: Eastman Kodak Company
  • 当前专利权人: Eastman Kodak Company
  • 当前专利权人地址: US NY Rochester
  • 代理商 Kevin E. Spaulding
  • 主分类号: G03F3/08
  • IPC分类号: G03F3/08 G06K9/00
Gamut mapping using hue-preserving color space
摘要:
A method for applying gamut mapping to an input digital image having an associated input color gamut, to produce an output digital image having an associated output color gamut, which includes: defining a gamut mapping color transform which embodies the operations of transforming input color values from the input color space to linear RGB color values for a linear RGB color space, wherein the linear RGB color space has desirable hue preserving characteristics; transforming the linear RGB color values to determine nonlinear RGB color values; applying a 3×3 matrix transformation to the nonlinear RGB values to an opponent color space; applying a gamut mapping function to map opponent color values within the input color gamut to produce modified opponent color values within the output color gamut; and transforming the modified opponent color values to produce the output color values in the output color space.
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