Invention Grant
US08760535B2 Reducing computational complexity in determining an illuminant of a scene 有权
降低确定场景光源的计算复杂度

  • Patent Title: Reducing computational complexity in determining an illuminant of a scene
  • Patent Title (中): 降低确定场景光源的计算复杂度
  • Application No.: US12651104
    Application Date: 2009-12-31
  • Publication No.: US08760535B2
    Publication Date: 2014-06-24
  • Inventor: Anurag Goel
  • Applicant: Anurag Goel
  • Applicant Address: US CA Santa Clara
  • Assignee: Nvidia Corporation
  • Current Assignee: Nvidia Corporation
  • Current Assignee Address: US CA Santa Clara
  • Main IPC: H04N9/73
  • IPC: H04N9/73
Reducing computational complexity in determining an illuminant of a scene
Abstract:
In an embodiment, computational complexity of estimating the actual illuminant of a scene is reduced by examining only a subset of the pixel values generated for a received image frame. In another embodiment, number of rotations of color values is minimized by selecting an area which contains the color cue values of a color in an original/unrotated coordinate space and has boundaries which parallel the axis of the original coordinate space, and rotating a color value only if the color value is within the selected area. In another embodiment, such an area is used in conjunction with a histogram-based approach to determine the actual illuminant.
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