Analysis of Edge Detection in Bar Code Symbols: An Overview and Open Problems

<table>Noise-free signal <svg height="20.6" id="M412" style="vertical-align:-2.3205pt" version="1.1" viewbox="0 0 28.2125 20.6" width="28.2125" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> (– –) generated by different scanning beams: (a) Gaussian beam with <svg height="15.1375" id="M413" style="vertical-align:-3.3907pt" version="1.1" viewbox="0 0 45.825001 15.1375" width="45.825001" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> and <svg height="15.1375" id="M414" style="vertical-align:-3.3907pt" version="1.1" viewbox="0 0 45.825001 15.1375" width="45.825001" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>, (b) beam with intensity distribution given by (<a href="https://static.hindawi.com/articles/jam/volume-2012/758657/figures/#EEq96">4.2</a>).</table>

Journal of Applied Mathematics

fig9

Figure 9

Figure 9: Analysis of Edge Detection in Bar Code Symbols: An Overview and Open Problems 