Relighting with 4D incident light fields
- 1 July 2003
- journal article
- Published by Association for Computing Machinery (ACM) in ACM Transactions on Graphics
- Vol. 22 (3) , 613-620
- https://doi.org/10.1145/882262.882315
Abstract
We present an image-based technique to relight real objects illuminated by a 4D incident light field, representing the illumination of an environment. By exploiting the richness in angular and spatial variation of the light field, objects can be relit with a high degree of realism.We record photographs of an object, illuminated from various positions and directions, using a projector mounted on a gantry as a moving light source. The resulting basis images are used to create a subset of the full reflectance field of the object. Using this reflectance field, we can create an image of the object, relit with any incident light field and observed from a flxed camera position.To maintain acceptable recording times and reduce the amount of data, we propose an efficient data acquisition method.Since the object can be relit with a 4D incident light field, illumination effects encoded in the light field, such as shafts of shadow or spot light effects, can be realized.This publication has 13 references indexed in Scilit:
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