Invention Grant
US09172853B2 Microlens array architecture for avoiding ghosting in projected images
有权
微透镜阵列架构,用于避免投影图像中的重影
- Patent Title: Microlens array architecture for avoiding ghosting in projected images
- Patent Title (中): 微透镜阵列架构,用于避免投影图像中的重影
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Application No.: US14456132Application Date: 2014-08-11
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Publication No.: US09172853B2Publication Date: 2015-10-27
- Inventor: Colvin Pitts , Timothy James Knight , Chia-Kai Liang , Yi-Ren Ng
- Applicant: Lytro, Inc.
- Applicant Address: US CA Mountain View
- Assignee: Lytro, Inc.
- Current Assignee: Lytro, Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Raubvogel Law Office
- Main IPC: G06K7/00
- IPC: G06K7/00 ; H04N5/217 ; H04N17/00 ; H04N5/225 ; G02B27/00 ; H04N5/21 ; G02B3/00

Abstract:
Light-field image data is processed in a manner that reduces projection artifacts in the presence of variation in microlens position by calibrating microlens positions. Approximate centers of disks in a light-field image are identified, and gridded calibration is performed, by fitting lines to disk centers along orthogonal directions, and then fitting a rigid grid to the light-field image. For each grid region, a corresponding disk center is computed, and a displacement vector is generated. For each grid region, the final disk center is computed as the vector sum of the grid region's geometric center and displacement vector. Calibration data, including displacement vectors, is then used in calibrating disk centers for more accurate projection of light-field images. In at least one embodiment, the imaging geometry is arranged so that disks are separated by a gap, so as to limit or eliminate ghosting.
Public/Granted literature
- US20150029386A1 MICROLENS ARRAY ARCHITECTURE FOR AVOIDING GHOSTING IN PROJECTED IMAGES Public/Granted day:2015-01-29
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