Invention Grant
- 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
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Application No.: US12651104Application Date: 2009-12-31
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Publication No.: US08760535B2Publication 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

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.
Public/Granted literature
- US20100103289A1 REDUCING COMPUTATIONAL COMPLEXITY IN DETERMINING AN ILLUMINANT OF A SCENE Public/Granted day:2010-04-29
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