Method for extracting non-periodical patterns masked by periodical patterns, and device implementing the method

The present invention relates to a method for extracting information of interest from a measurement signal including a periodical interference pattern, including the steps of: (i) generating a filtering function, representing the frequency components of the interference pattern, by implementing an analysis of an amplitude spectrum of the measurement signal based on morphological criteria; (ii) applying said filtering function to the measurement signal so as to generate an interference signal essentially consisting of the interference pattern; and (iii) calculating a filtered signal by determining a difference between the measurement signal and the interference signal. The invention also relates to a device implementing the method. 本发明涉及用于从包括周期性干扰图案的测量信号中提取感兴趣的信息的方法，其包括以下步骤：(i)通过基于形态学标准对测量信号的幅度谱进行分析来生成代表干扰图案的频率分量的滤波函数，(ii)对测量信号应用所述滤波函数以生成基本上由干扰图案构成的干扰信号，以及(iii)通过确定测量信号和干扰信号之差来计算滤波信号。本发明还涉及执行该方法的装置。