Invention Grant
- Patent Title: Image details preservation and enhancement
- Patent Title (中): 图像细节保存和增强
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Application No.: US12695220Application Date: 2010-01-28
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Publication No.: US08781248B2Publication Date: 2014-07-15
- Inventor: Haiyun Wang , Lucas Hui
- Applicant: Haiyun Wang , Lucas Hui
- Applicant Address: SG Singapore
- Assignee: STMicroelectronics Asia Pacific Pte. Ltd.
- Current Assignee: STMicroelectronics Asia Pacific Pte. Ltd.
- Current Assignee Address: SG Singapore
- Agency: Wolf, Greenfield & Sacks, P.C.
- Main IPC: G06T5/00
- IPC: G06T5/00 ; G06T5/40 ; G06T5/50

Abstract:
The appearance of image details can be preserved and/or enhanced by applying contrast adaptive gain to the high spatial frequency component of the luminance information. The image details in bright and/or dark regions can be further boosted by applying a local mean adaptive gain. The contrast transfer mapping curve for luminance contrast enhancement can be re-scaled to account for the applied gain. The re-scaling may be performed from frame to frame of displayed video. The re-scaling may be temporally controlled for subsequent frames to make the re-scaling change gradually to prevent flickering.
Public/Granted literature
- US20110181787A1 IMAGE DETAILS PRESERVATION AND ENHANCEMENT Public/Granted day:2011-07-28
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