Image Based Rendering Using Algebraic Techniques
Author(s)
Evgeniou, Theodoros
DownloadAIM-1592.ps (10.66Mb)
Additional downloads
Metadata
Show full item recordAbstract
This paper presents an image-based rendering system using algebraic relations between different views of an object. The system uses pictures of an object taken from known positions. Given three such images it can generate "virtual'' ones as the object would look from any position near the ones that the two input images were taken from. The extrapolation from the example images can be up to about 60 degrees of rotation. The system is based on the trilinear constraints that bind any three view so fan object. As a side result, we propose two new methods for camera calibration. We developed and used one of them. We implemented the system and tested it on real images of objects and faces. We also show experimentally that even when only two images taken from unknown positions are given, the system can be used to render the object from other view points as long as we have a good estimate of the internal parameters of the camera used and we are able to find good correspondence between the example images. In addition, we present the relation between these algebraic constraints and a factorization method for shape and motion estimation. As a result we propose a method for motion estimation in the special case of orthographic projection.
Date issued
1996-11-01Other identifiers
AIM-1592
CBCL-140
Series/Report no.
AIM-1592CBCL-140
Keywords
reprojection, projective geometry, trilinear tensor, shape and motion