Invention Grant
US08928735B2 Combined lighting, projection, and image capture without video feedback
有权
组合照明,投影和图像捕获,无视频反馈
- Patent Title: Combined lighting, projection, and image capture without video feedback
- Patent Title (中): 组合照明,投影和图像捕获,无视频反馈
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Application No.: US13160080Application Date: 2011-06-14
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Publication No.: US08928735B2Publication Date: 2015-01-06
- Inventor: Sasa Junuzovic , William Thomas Blank , Steven Bathiche , Anoop Gupta , Andrew D. Wilson
- Applicant: Sasa Junuzovic , William Thomas Blank , Steven Bathiche , Anoop Gupta , Andrew D. Wilson
- Applicant Address: US WA Redmond
- Assignee: Microsoft Corporation
- Current Assignee: Microsoft Corporation
- Current Assignee Address: US WA Redmond
- Agent Cassandra T. Swain; Judy Yee; Micky Minhas
- Main IPC: H04N5/225
- IPC: H04N5/225 ; G03B17/54 ; G03B15/05 ; G06F3/00 ; H04N5/247 ; H04N9/31 ; H04N13/02 ; H04L12/18 ; H04N7/14 ; H04N5/33

Abstract:
A “Concurrent Projector-Camera” uses an image projection device in combination with one or more cameras to enable various techniques that provide visually flicker-free projection of images or video, while real-time image or video capture is occurring in that same space. The Concurrent Projector-Camera provides this projection in a manner that eliminates video feedback into the real-time image or video capture. More specifically, the Concurrent Projector-Camera dynamically synchronizes a combination of projector lighting (or light-control points) on-state temporal compression in combination with on-state temporal shifting during each image frame projection to open a “capture time slot” for image capture during which no image is being projected. This capture time slot represents a tradeoff between image capture time and decreased brightness of the projected image. Examples of image projection devices include LED-LCD based projection devices, DLP-based projection devices using LED or laser illumination in combination with micromirror arrays, etc.
Public/Granted literature
- US20120320157A1 COMBINED LIGHTING, PROJECTION, AND IMAGE CAPTURE WITHOUT VIDEO FEEDBACK Public/Granted day:2012-12-20
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