Searching for authors named Charlie Rothwell – sorted by Relevance.
9 documents found, showing 1 through 9.
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Reasoning about Occlusions during Hypothesis Verification
- …. In this paper we study the limitations of current verification strategies in object recognition and suggest how they may be enhanced. On the whole object topology is exploited little during verification. In practice, understanding the connectivity relationships between features in the image, or on…
- Cited by 6 (0 self) – Add To MetaCart
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Understanding the Shape Properties of Trihedral Polyhedra
- …. This paper presents a general framework for the computation of projective invariants of arbitrary degree of freedom (dof) trihedral polyhedra. We show that high dof. figures can be broken down into sets of connected four dof. polyhedra, for which known invariants exist. Although the more general s…
- Cited by 2 (0 self) – Add To MetaCart
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Representing Objects using Topology
- …. In this paper we call for the revival of the study of topological representations in computer vision. Topology allows us to express the connectivity relationships which exist between different primitives in images and in scenes. Although topology was once of significant interest in vision, it has …
- Cited by 6 (2 self) – Add To MetaCart
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Different Paths Towards Projective Reconstruction
- …This paper introduces a simple and effective parametrization for camera matrices that can be used for computing multiple view projective reconstructions for uncalibrated cameras. The parametrization is dependent only on the fundamental matrices which relate pairs of images, and so can be computed au…
- Cited by 2 (1 self) – Add To MetaCart
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A Comparison of Projective Reconstruction Methods for Pairs of Views
- …Recently, different approaches for uncalibrated stereo have been suggested which permit projective reconstructions from multiple views. These use weak calibration which is represented by the epipolar geometry, and so we require no knowledge of the intrinsic or extrinsic camera parameters. In this pa…
- Cited by 27 (6 self) – Add To MetaCart
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Efficient Recognition of Rotationally Symmetric Surfaces and Straight Homogeneous Generalized Cylinders
- …It is known that rotationally symmetric surfaces can be recognized from their outlines alone, using crossratio 's of bitangent intersections. This paper demonstrates a successful implementation of this technique, using a novel bitangent finder, that works on images of real scenes. We report on the s…
- Cited by 18 (9 self) – Add To MetaCart
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Driving Vision by Topology
- …: Recently, vision research has centred on both the extraction and organization of geometric features, and on geometric relations. It is largely assumed that topological structure, that is linked edgel chains and junctions, cannot be extracted reliably from image intensity data. In this paper we dem…
- Cited by 23 (2 self) – Add To MetaCart
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Class-Based Grouping in Perspective Images
- …In any object recognition system a major and primary task is to associate those image features, within an image of a complex scene, that arise from an individual object. The key idea here is that a geometric class defined in 3D induces relationships in the image which must hold between points on the…
- Cited by 24 (8 self) – Add To MetaCart
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3D Object Recognition using Invariance
- …The systems and concepts described in this paper document the evolution of the geometric invariance approach to object recognition over the last five years. Invariance overcomes one of the fundamental difficulties in recognising objects from images: that the appearance of an object depends on viewpo…
- Cited by 28 (5 self) – Add To MetaCart
Showing 1 through 9.
