2013 | OriginalPaper | Buchkapitel
Optimal Covering of a Straight Line Applied to Discrete Convexity
verfasst von : Jean-Marc Chassery, Isabelle Sivignon
Erschienen in: Discrete Geometry for Computer Imagery
Verlag: Springer Berlin Heidelberg
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The relation between a straight line and its digitization as a digital straight line is often expressed using a notion of proximity. In this contribution, we consider the covering of the straight line by a set of balls centered on the digital straight line pixels. We prove that the optimal radius of the balls is strictly less than one, and can be expressed as a function of the slope of the straight line. This property is used to define discrete convexity in concordance with previous works on convexity.