Stable and Robust Vectorization: How to Make the Right Choices

As a complement to quantitative evaluation methods for raster-to-graphics conversion, we discuss in this paper some qualitative elements which should be taken into account when choosing the different steps of one's vectorization method. We stress the importance of having robust methods and stable implementations, and we base ourselves extensivelyon our own implementations and tests, concentrating on methods designed to have few, if any, parameters.