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Conference Paper
Geometric Method for Detection of Image Quadrilateral
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- Authors
- Joo-Haeng Lee
- Issue Date
- 2015-06
- Citation
- International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC) 2015, pp.482-484
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- A geometric method to detect a quadrilateral area in an image is proposed. The underlying geometric primitive is a line segment represented by two endpoints, which can be detected from an image with an existing detector. The initial set of line segments is filtered with simple heuristics such as weights and length. Given a seed point of a target quadrilateral, a nearest-point measure is applied for further filtering. For the final search set of nearest points, we build Voronoi diagram that manages geometric proximity and accelerates neighborhood search. The result is given as ordered vertices of an image quad in subpixel precision. The proposed method shows an interactive performance for test images.
- KSP Keywords
- Geometric Primitives, Geometric method, Interactive performance, Line segments, Nearest points, Voronoi Diagram, neighborhood search, seed point