Accession Number:

AD1157723

Title:

A Reflective Light Stage

Descriptive Note:

[Technical Report, Research Paper]

Corporate Author:

UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES

Personal Author(s):

• Peers, Pieter
• Hawkins, Tim
• Debevec, Paul

Report Date:

2006-12-23

Pagination or Media Count:

18

Abstract:

We present a novel acquisition device to capture high resolution 4D reflectance fields of real scenes. The device consists of a concave hemispherical surface coated with a rough specular paint and a digital video projector with a fish-eye lens positioned near the center of the hemisphere. The scene is placed near the projector, also near the center, and photographed from a fixed vantage point. The projector projects a high-resolution image of incident illumination which is reflected by the rough hemispherical surface to become the illumination on the scene. We demonstrate the utility of this device by capturing a high resolution hemispherical reflectance field of a specular object which would be difficult to capture using previous acquisition techniques.

Descriptors:

• cameras
• computer graphics
• photographs
• high resolution
• materials
• fungi
• graphics
• light sources
• photography
• acquisition
• computer science
• mirrors
• reflectance
• reflection
• specular reflection
• computer vision
• images

Subject Categories:

• Electrooptical and Optoelectronic Devices
• Optics
• Photography

Distribution Statement:

[A, Approved For Public Release]