A novel approach to polygonal approximation of digital curves
Journal of Visual Communication and Image Representation
Technical Section: An efficient technique for capturing 2D objects
Computers and Graphics
Capturing outlines of 2D objects with Bézier cubic approximation
Image and Vision Computing
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The performance of chain codes for line drawings in the framework of source coding with a fidelity criterion is investigated. A formal characterization is given for a broad class of chain codes that includes the generalized chain codes of Freeman and the convex quantizers of Koplowitz. Measures of distortion (fidelity) and rate (efficiency) are introduced. The distortion and rate are calculated for several types of chain codes applied to straight and slowly curving lines. Several statistical models for straight lines are introduced and the average performance of chain codes for these models is investigated.