摘要： 分析了当前对于从固定背景下的特征符号与背景符号相粘连的图表中提取信息所存在的问题，设计了适用于此类问题的方法模型。提出了一种在固定背景下通过背景符号检测和背景符号擦除来实现随机波形提取的方法。

关键词: 特征符号；背景符号；检测；擦除

Abstract: Through analyzing the problem of acquiring information from the chart with feature symbol and background symbol, this paper devises a kind of approach that can acquire the information by inspecting background symbol and removing it under regular background

Key words: Feature symbol; Background symbol; Inspecting; Removing