01045nas a2200145 4500008004100000245007600041210006900117260005400186300001200240520052600252100002000778700002800798700001400826856005900840 2013 eng d00aBarcode detection with uniform partitioning and distance transformation0 aBarcode detection with uniform partitioning and distance transfo aInnsbruck, AustriabIASTED - Acta PresscFeb 2013 a48 - 533 a

Barcode detection is required in a wide range of real-lifeapplications. Imaging conditions and techniques vary considerably and each application has its own requirements for detection speed and accuracy. In our earlier works we used uniform partitioning with several approaches for detection of various types of 1D and 2D barcodes and showed their behaviour on a set of test images. In this work, we extend the partitioning idea and replace scan-line based methods with distance transformation to improve accuracy.

1 aBodnár, Péter1 aNyúl, László, Gábor1 aLinsen, L uhttp://www.actapress.com/PaperInfo.aspx?paperId=45498801602nas a2200145 4500008004100000245008200041210006900123260004300192300001400235520102400249100001901273700002301292700001401315856012701329 2013 eng d00aSufficient Conditions for Topology Preserving Additions and General Operators0 aSufficient Conditions for Topology Preserving Additions and Gene aCalgarybIASTED - Acta PresscFeb 2013 a107 - 1143 a

Topology preservation is a crucial issue of digital topology. Various applications of binary image processing rest on topology preserving operators. Earlier studies in this topic mainly concerned with reductions (i.e., operators that only delete some object points from binary images), as they form the basis for thinning algorithms. However, additions (i.e., operators that never change object points) also play important role for the purpose of generating discrete Voronoi diagrams or skeletons by influence zones (SKIZ). Furthermore, the use of general operators that may both add and delete some points to and from objects in pictures are suitable for contour smoothing. Therefore, in this paper we present some new sufficient conditions for topology preserving reductions, additions, and general operators. Two additions for 2D and 3D contour smoothing are also reported.

 

1 aKardos, Péter1 aPalágyi, Kálmán1 aLinsen, L uhttps://tisat.inf.u-szeged.hu/en/publication/sufficient-conditions-for-topology-preserving-additions-and-general-operators