Critical curves and surfaces for euclidean reconstruction
(2002) Computer Vision - ECCV 2002. 7th European Conference on Computer Vision. 2351. p.447-462- Abstract
- The problem of recovering scene structure and camera motion from images has a number of inherent ambiguities. In this paper, configurations of points and cameras are analyzed for which the image points alone are insufficient to recover the scene geometry uniquely. Such configurations are said to be critical. For two views, it is well-known that a configuration is critical only if the two camera centres and all points lie on a ruled quadric. However, this is only a necessary condition. We give a complete characterization of the critical surfaces for two calibrated cameras and any number of points. Both algebraic and geometric characterizations of such surfaces are given. The existence of critical sets for n-view projective reconstruction... (More)
- The problem of recovering scene structure and camera motion from images has a number of inherent ambiguities. In this paper, configurations of points and cameras are analyzed for which the image points alone are insufficient to recover the scene geometry uniquely. Such configurations are said to be critical. For two views, it is well-known that a configuration is critical only if the two camera centres and all points lie on a ruled quadric. However, this is only a necessary condition. We give a complete characterization of the critical surfaces for two calibrated cameras and any number of points. Both algebraic and geometric characterizations of such surfaces are given. The existence of critical sets for n-view projective reconstruction has recently been reported in the literature. We show that there are critical sets for n-view Euclidean reconstruction as well. For example, it is shown that for any placement of three calibrated cameras, there always exists a critical set consisting of any number of points on a fourth-degree curve. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/321062
- author
- Kahl, Fredrik LU and Hartley, Richard
- organization
- publishing date
- 2002
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Euclidean reconstruction, critical surfaces, critical curves, scene structure, fourth-degree curve, n-view projective reconstruction, calibrated cameras, scene geometry, camera motion
- host publication
- Computer Vision - ECCV 2002, PT II
- volume
- 2351
- pages
- 447 - 462
- publisher
- Springer
- conference name
- Computer Vision - ECCV 2002. 7th European Conference on Computer Vision.
- conference location
- Copenhagen, Denmark
- conference dates
- 2002-05-28 - 2002-05-31
- external identifiers
-
- wos:000179968800030
- scopus:84948949988
- ISSN
- 1611-3349
- 0302-9743
- ISBN
- 3-540-43744-4
- language
- English
- LU publication?
- yes
- id
- 8086bda4-43ce-497d-b4f1-2ef9873d6832 (old id 321062)
- alternative location
- http://www.springerlink.com/content/5tul14dkugfnm23y
- date added to LUP
- 2016-04-01 12:35:42
- date last changed
- 2024-01-09 02:02:03
@inproceedings{8086bda4-43ce-497d-b4f1-2ef9873d6832,
abstract = {{The problem of recovering scene structure and camera motion from images has a number of inherent ambiguities. In this paper, configurations of points and cameras are analyzed for which the image points alone are insufficient to recover the scene geometry uniquely. Such configurations are said to be critical. For two views, it is well-known that a configuration is critical only if the two camera centres and all points lie on a ruled quadric. However, this is only a necessary condition. We give a complete characterization of the critical surfaces for two calibrated cameras and any number of points. Both algebraic and geometric characterizations of such surfaces are given. The existence of critical sets for n-view projective reconstruction has recently been reported in the literature. We show that there are critical sets for n-view Euclidean reconstruction as well. For example, it is shown that for any placement of three calibrated cameras, there always exists a critical set consisting of any number of points on a fourth-degree curve.}},
author = {{Kahl, Fredrik and Hartley, Richard}},
booktitle = {{Computer Vision - ECCV 2002, PT II}},
isbn = {{3-540-43744-4}},
issn = {{1611-3349}},
keywords = {{Euclidean reconstruction; critical surfaces; critical curves; scene structure; fourth-degree curve; n-view projective reconstruction; calibrated cameras; scene geometry; camera motion}},
language = {{eng}},
pages = {{447--462}},
publisher = {{Springer}},
title = {{Critical curves and surfaces for euclidean reconstruction}},
url = {{http://www.springerlink.com/content/5tul14dkugfnm23y}},
volume = {{2351}},
year = {{2002}},
}