Invention Grant
- Patent Title: Extraction and representation of three-dimensional (3D) and bidirectional reflectance distribution function (BRDF) parameters from lighted image sequences
- Patent Title (中): 从照明图像序列中提取和表示三维(3D)和双向反射分布函数(BRDF)参数
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Application No.: US14108358Application Date: 2013-12-17
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Publication No.: US09509905B2Publication Date: 2016-11-29
- Inventor: Ariel Gordon , Ehud Rivlin
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: McDonnell Boehnen Hulbert & Berghoff LLP
- Main IPC: H04N5/232
- IPC: H04N5/232 ; H04N5/235 ; G06T15/50

Abstract:
Methods and systems are provided that use images to determine lighting information for an object. A computing device can receive an image of the object. For a pixel of the image, the computing device can: apply a first lighting model to determine a first estimate of a bi-directional lighting function (BRDF) for the object at the pixel, apply a second lighting model to determine a second estimate of the BRDF for the object at the pixel, determine a third estimate of the BRDF based on the first and second estimates, and store the third estimate of the BRDF in lighting-storage data. The computing device can provide the lighting-storage data. The BRDF can utilize a number of lighting parameters, such as a normal vector and albedo, reflectivity, and roughness values.
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