Invention Grant
- Patent Title: Acquisition of surface normal maps from spherical gradient illumination
- Patent Title (中): 从球形渐变照明获取表面法线贴图
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Application No.: US12105141Application Date: 2008-04-17
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Publication No.: US08134555B2Publication Date: 2012-03-13
- Inventor: Paul E. Debevec , Wan-Chun Ma , Timothy Hawkins
- Applicant: Paul E. Debevec , Wan-Chun Ma , Timothy Hawkins
- Applicant Address: US CA Los Angeles
- Assignee: University of Southern California
- Current Assignee: University of Southern California
- Current Assignee Address: US CA Los Angeles
- Agency: McDermott Will & Emery LLP
- Main IPC: G06T15/00
- IPC: G06T15/00

Abstract:
An apparatus for generating a surface normal map of an object may include a plurality of light sources having intensities that are controllable so as to generate one or more gradient illumination patterns. The light sources are configured and arranged to illuminate the surface of the object with the gradient illumination patterns. A camera may receive light reflected from the illuminated surface of the object, and generate data representative of the reflected light. A processing system may process the data so as to estimate the surface normal map of the surface of the object. A specular normal map and a diffuse normal map of the surface of the object may be generated separately, by placing polarizers on the light sources and in front of the camera so as to illuminate the surface of the object with polarized spherical gradient illumination patterns.
Public/Granted literature
- US20080304081A1 Acquisition of Surface Normal Maps from Spherical Gradient Illumination Public/Granted day:2008-12-11
Information query
IPC分类:
G | 物理 |
G06 | 计算;推算或计数 |
G06T | 一般的图像数据处理或产生 |
G06T15/00 | 3D〔三维〕图像的加工 |