Invention Grant
US08493432B2 Digital refocusing for wide-angle images using axial-cone cameras
有权
使用轴向锥形相机对广角图像进行数字重新对焦
- Patent Title: Digital refocusing for wide-angle images using axial-cone cameras
- Patent Title (中): 使用轴向锥形相机对广角图像进行数字重新对焦
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Application No.: US12825608Application Date: 2010-06-29
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Publication No.: US08493432B2Publication Date: 2013-07-23
- Inventor: Yuichi Taguchi , Amit K. Agrawal , Ashok N. Veeraraghavan , Srikumar Ramalingam , Ramesh Raskar
- Applicant: Yuichi Taguchi , Amit K. Agrawal , Ashok N. Veeraraghavan , Srikumar Ramalingam , Ramesh Raskar
- Applicant Address: US MA Cambridge
- Assignee: Mitsubishi Electric Research Laboratories, Inc.
- Current Assignee: Mitsubishi Electric Research Laboratories, Inc.
- Current Assignee Address: US MA Cambridge
- Agent Gene Vinokur; Dirk Brinkman
- Main IPC: H04N7/00
- IPC: H04N7/00

Abstract:
A single camera acquires an input image of a scene as observed in an array of spheres, wherein pixels in the input image corresponding to each sphere form a sphere image. A set of virtual cameras are defined for each sphere on a line joining a center of the sphere and a center of projection of the camera, wherein each virtual camera has a different virtual viewpoint and an associated cone of rays, appearing as a circle of pixels on its virtual image plane. A projective texture mapping of each sphere image is applied to all of the virtual cameras on the virtual image plane to produce a virtual camera image comprising circle of pixels. Each virtual camera image for each sphere is then projected to a refocusing geometry using a refocus viewpoint to produce a wide-angle lightfield view, which are averaged to produce a refocused wide-angle image.
Public/Granted literature
- US20110316968A1 Digital Refocusing for Wide-Angle Images Using Axial-Cone Cameras Public/Granted day:2011-12-29
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