Invention Grant
US07710432B2 Color correction techniques for correcting color profiles or a device-independent color space 有权
用于校正颜色配置文件或与设备无关的颜色空间的颜色校正技术

  • Patent Title: Color correction techniques for correcting color profiles or a device-independent color space
  • Patent Title (中): 用于校正颜色配置文件或与设备无关的颜色空间的颜色校正技术
  • Application No.: US11311581
    Application Date: 2005-12-14
  • Publication No.: US07710432B2
    Publication Date: 2010-05-04
  • Inventor: Christopher J. Edge
  • Applicant: Christopher J. Edge
  • Applicant Address: US NY Rochester
  • Assignee: Eastman Kodak Company
  • Current Assignee: Eastman Kodak Company
  • Current Assignee Address: US NY Rochester
  • Agent Nelson Aelrian Blish
  • Main IPC: G09G5/02
  • IPC: G09G5/02 G09G5/00
Color correction techniques for correcting color profiles or a device-independent color space
Abstract:
According to an embodiment of the present invention, selective tristimulus corrections to device-independent coordinates are applied using a piecewise linear correction function. The piecewise linear correction function is defined such that a maximum of the piecewise linear correction function occurs at a boundary condition of a corresponding device-dependent color space, and the piecewise linear correction function is linearly reduced to zero or approximately zero as values in the corresponding device-dependent color space approach either a different boundary condition or a neutral axis. By having the piecewise linear correction function reduce linearly to zero or approximately zero, corrections to one region of color smoothly diminish and blend into the other regions of color, thereby substantially preventing the introduction of artifacts or image corruption due to the corrections.
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