The Curvature Primal Sketch
- 1 January 1986
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. PAMI-8 (1) , 2-14
- https://doi.org/10.1109/tpami.1986.4767747
Abstract
In this paper we introduce a novel representation of the significant changes in curvature along the bounding contour of planar shape. We call the representation the Curvature Primal Sketch because of the close analogy to the primal sketch representation advocated by Marr for describing significant intensity changes. We define a set of primitive parameterized curvature discontinuities, and derive expressions for their convolutions with the first and second derivatives of a Gaussian. We describe an implemented algorithm that computes the Curvature Primal Sketch by matching the multiscale convolutions of a shape, and illustrate its performance on a set of tool shapes. Several applications of the representation are sketched.Keywords
This publication has 19 references indexed in Scilit:
- Describing surfacesComputer Vision, Graphics, and Image Processing, 1985
- A fast sequential method for polygonal approximation of digitized curvesComputer Vision, Graphics, and Image Processing, 1984
- Smoothed Local Symmetries and Their ImplementationThe International Journal of Robotics Research, 1984
- Inferring surfaces from imagesArtificial Intelligence, 1981
- A new approach to contour codingComputer Graphics and Image Processing, 1981
- Theory of edge detectionProceedings of the Royal Society of London. B. Biological Sciences, 1980
- Shape description using weighted symmetric axis featuresPattern Recognition, 1978
- Early processing of visual informationPhilosophical Transactions of the Royal Society of London. B, Biological Sciences, 1976
- Edge and Curve Detection for Visual Scene AnalysisIEEE Transactions on Computers, 1971
- Some informational aspects of visual perception.Psychological Review, 1954