Invention Publication
- Patent Title: SYSTEMS AND METHODS FOR SHADOW DETECTION AND REDUCTION IN DOCUMENT CAPTURE
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Application No.: US17957902Application Date: 2022-09-30
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Publication No.: US20240114250A1Publication Date: 2024-04-04
- Inventor: Tao Chen , Reda Harb
- Applicant: Rovi Guides, Inc.
- Applicant Address: US CA San Jose
- Assignee: Rovi Guides, Inc.
- Current Assignee: Rovi Guides, Inc.
- Current Assignee Address: US CA San Jose
- Main IPC: H04N23/74
- IPC: H04N23/74 ; G06T7/00 ; H04N23/71

Abstract:
Systems and methods for shadow detection and reduction during document capture are disclosed herein. Temporary images of hardcopy documents are analyzed to determine the presence of a shadow or hotspot that obscures information of the hardcopy document. In response to detecting the shadow or hotspot, a controllable light source is used to illuminate the hardcopy document at predicted and/or predetermined intensities to minimize or eliminate the shadow on the hardcopy document. A permanent image of the hardcopy document illuminated by the controllable light source at the intensity that minimizes or eliminates the shadow is then stored. In this way, information of the hardcopy document (such as text, color, layout, spacing etc.) is increased in the permanent image and a need for post-processing the permanent image is reduced or eliminated.
Public/Granted literature
- US12170850B2 Systems and methods for shadow detection and reduction in document capture Public/Granted day:2024-12-17
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