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Content Provider | IEEE Xplore Digital Library |
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Author | Lindeberg, T. |
Copyright Year | 1995 |
Description | Author affiliation: R. Inst. of Technol., Stockholm, Sweden (Lindeberg, T.) |
Abstract | This article deals with the problem of estimating deformations of brightness patterns using visual front-end operations. Estimating such deformations constitutes an important subtask in several computer vision problems relating to image correspondence and shape estimation. The following subjects are treated: The problem of decomposing affine flow fields into simpler components is analysed in detail. A canonical parametrization is presented based on singular value decomposition, which naturally separates the rotationally invariant components of the flow field from the rotationally variant ones. A novel mechanism is presented for automatic selection of scale levels when estimating local affine deformations. This mechanism is expressed within a multiscale framework where disparity estimates are computed in a hierarchical coarse-to-fine manner and corrected using iterative techniques. Then, deformation estimates are selected from the scales that minimize a certain normalized residual over scales. Finally, the descriptors so obtained serve as initial data for computing refined estimates of the local deformations.< |
Starting Page | 134 |
Ending Page | 141 |
File Size | 964774 |
Page Count | 8 |
File Format | |
ISBN | 0818670428 |
DOI | 10.1109/ICCV.1995.466795 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 1995-06-20 |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Computer vision Deformable models Shape control Brightness Cameras Motion estimation Laboratories Computational modeling Stereo vision Motion control |
Content Type | Text |
Resource Type | Article |
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