Invention Grant
- Patent Title: Video matting based on foreground-background constraint propagation
- Patent Title (中): 基于前景背景约束传播的视频消隐
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Application No.: US13138384Application Date: 2010-01-05
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Publication No.: US08611728B2Publication Date: 2013-12-17
- Inventor: Sitaram Bhagavathy , Joan Llach
- Applicant: Sitaram Bhagavathy , Joan Llach
- Applicant Address: FR Boulogne-Billancourt
- Assignee: Thomson Licensing
- Current Assignee: Thomson Licensing
- Current Assignee Address: FR Boulogne-Billancourt
- Agent Robert D. Shedd; Jermone G. Schaefer
- International Application: PCT/US2010/000009 WO 20100105
- International Announcement: WO2010/093408 WO 20100819
- Main IPC: H04N5/93
- IPC: H04N5/93 ; H04N9/80 ; G11B27/00 ; G06K9/34 ; G06K9/00 ; G06K9/74 ; G06G5/00

Abstract:
A method for propagating user-provided foreground-background constraint information for a first video frame to subsequent frames allows extraction of moving foreground objects with minimal user interaction. Video matting is performed wherein constraints derived from user input with respect to a first frame are propagated to subsequent frames using the estimated alpha matte of each frame. The matte of a frame is processed in order to arrive at a rough foreground-background segmentation which is then used for estimating the matte of the next frame. At each frame, the propagated constraints are used by an image matting method for estimating the corresponding matte which is in turn used for propagating the constraints to the next frame, and so on.
Public/Granted literature
- US20110293247A1 Video matting based on foreground-background constraint propagation Public/Granted day:2011-12-01
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