Invention Grant
- Patent Title: System, method, and computer program for adjusting image contrast using parameterized cumulative distribution functions
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Application No.: US16552649Application Date: 2019-08-27
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Publication No.: US11308626B2Publication Date: 2022-04-19
- Inventor: William Guie Rivard , Brian J. Kindle , Adam Barry Feder
- Applicant: Duelight LLC
- Applicant Address: US CA Sunnyvale
- Assignee: Duelight LLC
- Current Assignee: Duelight LLC
- Current Assignee Address: US CA Sunnyvale
- Agency: Zilka-Kotab, P.C.
- Main IPC: G06T7/143
- IPC: G06T7/143 ; G06F17/18 ; G06T3/40 ; G06T7/11 ; G06T5/40 ; G06T5/00

Abstract:
A system and method are provided for optimizing histogram cumulative distribution function curves. In use, a first cumulative distribution function for a first histogram of a first pixel region of a first image is computed, and a first set of parameters for the first cumulative distribution function is extracted. A second cumulative distribution function for a second histogram of a second pixel region of the first image is computed, and a second set of parameters for the second cumulative distribution function is extracted. An interpolated cumulative distribution function comprising interpolated parameters calculated by interpolating between the first set of parameters and the second set of parameters is created. Additionally, a first equalized pixel in a second image based on a first input pixel in the first image and the interpolated cumulative distribution function is generated.
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