Invention Grant
US09407896B2 Multi-view synthesis in real-time with fallback to 2D from 3D to reduce flicker in low or unstable stereo-matching image regions
有权
多视点合成实时从3D回退到2D,以减少低或不稳定的立体匹配图像区域的闪烁
- Patent Title: Multi-view synthesis in real-time with fallback to 2D from 3D to reduce flicker in low or unstable stereo-matching image regions
- Patent Title (中): 多视点合成实时从3D回退到2D,以减少低或不稳定的立体匹配图像区域的闪烁
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Application No.: US14222893Application Date: 2014-03-24
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Publication No.: US09407896B2Publication Date: 2016-08-02
- Inventor: Che Yuen Brian Lam , Wei Lun Alan Cheung
- Applicant: Hong Kong Applied Science & Technology Research Institute Company Limited
- Applicant Address: HK Hong Kong
- Assignee: Hong Kong Applied Science and Technology Research Institute Company, Limited
- Current Assignee: Hong Kong Applied Science and Technology Research Institute Company, Limited
- Current Assignee Address: HK Hong Kong
- Agency: gPatent LLC
- Agent Stuart T. Auvinen
- Main IPC: H04N13/00
- IPC: H04N13/00 ; G06T15/00

Abstract:
Multi view images are generated with reduced flickering. A first depth map is generated from stereo images by stereo-matching. When stereo-matching is poor or varies too much from frame to frame, disparity fallback selects a second depth map that is generated from a single view without stereo-matching, preventing stereo-matching errors from producing visible artifacts or flickering. Flat or textureless regions can use the second depth map, while regions with good stereo-matching use the first depth map. Depth maps are generated with a one-frame delay and buffered. Low-cost temporal coherence reduces costs used for stereo-matching when the pixel location selected as the lowest-cost disparity is within a distance threshold of the same pixel in a last frame. Hybrid view synthesis uses forward mapping for smaller numbers of views, and backward mapping from the forward-mapping results for larger numbers of views. Rotated masks are generated on-the-fly for backward mapping.
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