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METHOD IN CREATING A SYMBOL PATTERN, SYMBOL PATTERN OBTAINED THEREBY, METHOD AND SYSTEM FOR FINDING A POSITION IN SUCH SYMBOL PATTERN AND COMPUTER PROGRAM PRODUCT FOR PERFORMING THE METHOD
METHOD IN CREATING A SYMBOL PATTERN, SYMBOL PATTERN OBTAINED THEREBY, METHOD AND SYSTEM FOR FINDING A POSITION IN SUCH SYMBOL PATTERN AND COMPUTER PROGRAM PRODUCT FOR PERFORMING THE METHOD
The invention relates to a method in creating a two-dimensional symbol pattern which may be utilized to determine a position in a large area covered by the pattern, for example for recording handwritten information by means of a pen-like instrument. The invention is useful for creating a symbol pattern having desired properties, namely that any sufficiently large observed part of the pattern is unique, enabling an unambiguous determination of position. The symbol pattern is based on a non-repeating sequence of symbol values Sk that each corresponds to a fixed linear combination of the coefficients of the monomials in xk mod P(x), where P(x) is any polynomial of degree n in the field Fq. The symbol pattern is generated by folding the sequence according to a wrapping scheme. The invention also relates to methods and systems for finding the position of a group of observed symbol values in this symbol pattern and computer program products performing the methods.
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机译:用于创建二维符号图案的方法技术领域本发明涉及一种用于创建二维符号图案的方法,该方法可用于确定图案所覆盖的大区域中的位置,例如用于借助于笔状仪器记录手写信息。本发明可用于创建具有期望特性的符号图案,即,图案的任何足够大的观察部分都是唯一的,从而能够明确确定位置。符号模式基于符号值Sk的非重复序列,每个符号值对应于xk mod P(x)中单项式的系数的固定线性组合,其中P(x)是n中阶n的任何多项式。现场Fq。通过根据包装方案折叠序列来产生符号图案。本发明还涉及用于在该符号模式中找到一组观察到的符号值的位置的方法和系统以及执行该方法的计算机程序产品。
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