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US 7,064,794 B2Granted
Method for dynamic contrast improvement
AssigneeThomson Licensing
InventorsPaul Dean Filliman, Thomas Edward Horlander
Life of this patent
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Abstract
A method for dynamic contrast improvement of video data includes the steps of analyzing a portion of a video frame, and forcing a start of DCI transfer function computations in response to an end of the analysis of the portion of the video frame.
Claims11
A method for dynamic contrast improvement of video data, comprising the steps of:
- analyzing a portion of a video frame;
- forcing a start of DCI transfer function computations in response to an end of the analysis of the portion of the video frame completing the DCI transfer function computations during a reception of said video frame.
A method for dynamic contrast improvement of video data, comprising the steps of:
- receiving data representing a video frame;
- analyzing at least a portion, defined by an analysis window, of the data representing the video frame for an image average brightness value and a dark sample distribution value;
- adjusting parameters of a dual segment transfer function based on the image average brightness value and the dark sample distribution value, the dual segment transfer function having a lower segment, an upper segment, and an adaptive pivot point which separates the lower segment and the upper segment;
- triggering a commencement of the adjusting step in response to a completion of the analyzing step, said completion of said analyzing step occurring during a reception of said video frame.
1 more element
Dependencies are inferred from the claim text.