Rendering Synthetic Objects Into Real Scenes
- Detailed Technology Description
- None
- Supplementary Information
- Patent Number: US6628298B1
Application Number: US1999356247A
Inventor: Debevec, Paul E.
Priority Date: 17 Jul 1998
Priority Number: US6628298B1
Application Date: 16 Jul 1999
Publication Date: 30 Sep 2003
IPC Current: G06T001550
US Class: 345632
Assignee Applicant: The Regents of the University of California
Title: Apparatus and method for rendering synthetic objects into real scenes using measurements of scene illumination
Usefulness: Apparatus and method for rendering synthetic objects into real scenes using measurements of scene illumination
Summary: For rendering synthesized image of object in scene in computer graphics application.
Novelty: Synthesized object image rendering method for computer graphics, involves computing global illumination solutions of distant and local scenes by assuming that they are affected/unaffected by synthesized object respectively
- Industry
- Electronics
- Sub Category
- Computer System
- Application No.
- 6628298
- Others
-
Tech ID/UC Case
18584/1998-078-0
Related Cases
1998-078-0
- *Abstract
-
For the motion picture industry and other industries that rely on realistic visual imagery, it would be highly desirable to provide a technique for realistically adding new objects to light-based models. The synthetic objects should be able to have arbitrary material properties and should be able to be rendered with appropriate illumination in arbitrary lighting environments. Furthermore, the objects should correctly interact with the environment around them; that is, they should cast the appropriate shadows, they should be properly reflected, they should reflect and focus light, and they should exhibit appropriate diffuse interreflection. Ideally, the method shoudl be carried out with commonly available equipment and software.
Researchers at the University of California, Berkeley have developed a method of using measured scene radiance and global illumination in order to add new objects to light-based models with correct lighting. The method uses a high dynamic range image-based model of the scene, rather than synthetic light sources, to illuminate the new objects. To compute the illumination, the scene is considered as three components: the distant scene, the local scene, and the synthetic objects. The distant scene is assumed to be photometrically unaffected by the objects, obviating the need for reflectance model information. The local scene is endowed with estimated reflectance model information so that it can catch shadows and receive reflected light from the new objects. Renderings are created with a standard global illumination method by simulating the interaction of light among the three components. A differential rendering technique obtains good results when the local scene reflectance properties are only estimated.
- *IP Issue Date
- Sep 30, 2003
- *Principal Investigator
-
Name: Paul Debevec
Department:
- Country/Region
- USA
