SOFTWARE CONFIGURATION11177.2.5 Direct Part Marking ApplicationsFor Data Matrix family codes the Decoding Complexity parameter is available whenProcessing Mode is set to Standard and selects the decoding algorithm according to theprinting/marking technique used to create the symbol and on the overall printing/markingquality.The possible selections progress from Low to Very High where Low can improve decodingtime for good print/mark quality and/or relatively normal size codes. This is the defaultsetting. Very High can improve the decode rate for low print/mark quality and/or small sizecodes. This algorithm is much more aggressive but in general it may have longer decodingtimes than the lower complexity algorithms. To minimize decoding time it is better toselect the lowest value that still guarantees good decoding.Figure 69 – Problematic Direct Part Marking ExamplesFor QR code the Decoding Method parameter allows the Dot Peen Decoding algorithm tobe selected which improves the decode rate for low quality Direct Part Mark codes and ingeneral for Direct Part Mark codes with dot peening type module shapes.Washed out and AxialDistortion Dot Peening OnScratched Surface Low ContrastProblemBackgroundProblems Marked On CurvedShiny SurfaceAxialdistortionHalf moon effects Shiny surface,noisy backgroundLow contrast,noisy background
