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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ahmed, A. Farag, A. |
| Copyright Year | 2007 |
| Description | Author affiliation: Univ. of Louisville, Louisville (Ahmed, A.; Farag, A.) |
| Abstract | This paper presents a new method for recovering the shape of hybrid surfaces that have both diffuse reflection and specular reflection using shape from shading (SFS). The image irradiance equation has been derived as an explicit partial differential equation (PDE) under the assumptions of orthographic camera projection and distant point light source. The reflectance model of Ward has been used to express the hybrid reflection as a linear combination from the diffuse and specular components. The resulting PDE is solved using the Lax-Friedrichs sweeping method. The proposed algorithm is evaluated by using both synthetic data and real images and the experimental results show the efficiency of the approach. |
| File Size | 1795102 |
| File Format | |
| ISBN | 9781424414369 |
| ISSN | 15224880 |
| DOI | 10.1109/ICIP.2007.4379208 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-09-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Shape Reflectivity Optical reflection Nonlinear equations Light sources Laboratories Layout Partial differential equations Brightness Computer vision Lax-Friedrichs sweeping Shape from Shading Ward Model |
| Content Type | Text |
| Resource Type | Article |
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