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contains various challenges, all of themcould be resolved. Themost important challengeswere the meshsimplificationstepandthedeterminationofthemaximumgradientdirection.Wecouldshowthe adaptationof theCannyedgedetector,usedonregulargrids to irregular triangularmeshes inR3. The necessaryuser input iskept toaminimum,namelyonlyoneparameter,whichcontrols thestrengthof the localand temporarymeshsimplification. Ingeneralouralgorithmdelivers robustapproximations withhighperformanceused for furtherprocessingwithmethods frommachine learning [5]. References [1] B.Bogacz,M.Gertz,andH.Mara.CharacterRetrievalofVectorizedCuneiformScript. InProc. of Int.Conf. onDocumentAnalysisandRecognition (ICDAR), pages326–330. IEEE,2015. [2] J.Canny.AComputationalApproachtoEdgeDetection. IEEETransactionsonPatternAnalysis andMachine Intelligence, PAMI-8(6):679–698,1986. [3] P.Cignoni,M.Callieri,M.Corsini,M.Dellepiane, F.Ganovelli, andG.Ranzuglia. MeshLab: anOpen-SourceMeshProcessingTool. In ItalianEurographicsConf., pages129–136,2008. [4] J.DavidEisenberg. SVGEssentials. O’Reilly, 1edition,2002. [5] D. Fisseler, F.Weichert, G.Mu¨ller, andM.Cammarosano. Towards an Interactive andAuto- matedScript FeatureAnalysis of 3DScannedCuneiformTablets. InProc. of the4thScientific ComputingandCulturalHeritage,Heidelberg,Germany,2013. [6] B. Groneberg, F. Weiersha¨user, T. Linnemann, and D. Ullrich. Digitale Keilschriftbiblio- thek Lexikalischer Listen aus Assur. InMax-Planck-Gesellschaft – Jahrbuch. Max-Planck- Gesellschaft, 2005. [7] H.Mara.Multi-Scale Integral Invariants forRobustCharacterExtraction fromIrregularPoly- gonMeshData. PhD thesis,Ruprecht-Karls-Universita¨t, InterdisciplinaryCenter forScientific Computing (IWR),Heidelberg,Germany,2012. [8] H.MaraandS.Kro¨mker.Vectorizationof3D-CharactersbyIntegral InvariantFilteringofHigh- ResolutionTriangularMeshes. InProc.of theInt.Conf.onDocumentAnalysisandRecognition (ICDAR), pages62–66. IEEE,2013. [9] H.Mara, S. Kro¨mker, S. Jakob, andB. Breuckmann. GigaMesh andGilgamesh - 3DMulti- scale Integral InvariantCuneiformCharacterExtraction. InA.Artusi et. al., editor,Proc.VAST Int. SymposiumonVirtual Reality, Archaeology andCulturalHeritage, pages 131–138, Paris, France,2010.EurographicsAssociation. [10] S.M.Maul.DasGilgamesch-Epos. Beck,2005. [11] D. L. Page, Y. Sun, A. F. Koschan, J. Paik, andM.A.Abidi. NormalVectorVoting: Crease DetectionandCurvatureEstimationonLarge,NoisyMeshes.GraphicalModels, 64(3–4):199– 229,2002. Special issue: Processingon largepolygonalmeshes. [12] R. Sablatnig andC.Menard. Stereo andStructuredLight asAcquisitionMethods in theField ofArchaeology. InMustererkennung1992, pages398–404.Springer, 1992. [13] W.vonSoden. TheancientOrient: an introduction to the studyof theancientNearEast. Wm. B.EerdmansPublishingCo., 1994. 182