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1.发明授权Extraction and representation of three-dimensional (3D) and bidirectional reflectance distribution function (BRDF) parameters from lighted image sequences 有权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）参数公开(公告)号：US09509905B2
公开(公告)日：2016-11-29
申请号：US14108358
申请日：2013-12-17
Applicant: Google Inc.
Inventor： Ariel Gordon , Ehud Rivlin
CPC classification number: H04N5/23229 , G06T15/506 , H04N5/2354
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.
Abstract translation: 提供了使用图像来确定对象的照明信息的方法和系统。 计算设备可以接收对象的图像。 对于图像的像素，计算设备可以：应用第一照明模型以确定在像素处的对象的双向照明功能（BRDF）的第一估计，应用第二照明模型以确定第二估计 在像素处的对象的BRDF基于第一和第二估计确定BRDF的第三估计，并将BRDF的第三估计存储在照明存储数据中。 计算设备可以提供照明存储数据。 BRDF可以利用许多照明参数，例如法向量和反照率，反射率和粗糙度值。
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2.发明申请Extraction and Representation of Three-Dimensional (3D) and Bidirectional Reflectance Distribution Function (BRDF) Parameters from Lighted Image Sequences 有权来自照明图像序列的三维（3D）和双向反射分布函数（BRDF）参数的提取和表示公开(公告)号：US20150172636A1
公开(公告)日：2015-06-18
申请号：US14108358
申请日：2013-12-17
Applicant: Google Inc.
Inventor： Ariel Gordon , Ehud Rivlin
CPC classification number: H04N5/23229 , G06T15/506 , H04N5/2354
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.
Abstract translation: 提供了使用图像来确定对象的照明信息的方法和系统。 计算设备可以接收对象的图像。 对于图像的像素，计算设备可以：应用第一照明模型以确定在像素处的对象的双向照明功能（BRDF）的第一估计，应用第二照明模型以确定第二估计 在像素处的对象的BRDF基于第一和第二估计确定BRDF的第三估计，并将BRDF的第三估计存储在照明存储数据中。 计算设备可以提供照明存储数据。 BRDF可以利用许多照明参数，例如法向量和反照率，反射率和粗糙度值。
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