大量地震监测模拟记录图纸面临腐烂和损坏，模拟记录资料数字化是挽救此成果的一种办法，在模拟记录图纸中，代表时点的纵轴线存在直线轴和曲线轴2种类型。为实现地震监测模拟记录图纸数字化，分析并提出轴线、记录曲线的数字化解决方法，基于Matlab实现影像读取、图像旋转、轴线匹配、曲线跟踪、数值转换、导出"时点-测量值"数据表等功能，并通过实例展现模拟图纸数字化成果，为验证成果的可靠性，将数字化与人工读取成果进行比较，发现二者具有一致性。
A large number of the analog drawings of seismic monitoring records are faced with decay and damage. To digitize the analogue record data is a method to save the valuable data. Firstly, the two methods, linear axis and curve axis, for presenting the longitudinal axis of time scale in analog recording drawings are analyzed for the design of digitization module, and the method for extracting axis lines and record curves is put forward. Then, with Matlab, the functions, such as image reading, image rotation, axis curve matching, tracking and numerical conversion, exporting the data table about "time-measured value" etc. are implemented. Finally, the digitization results of analogous record drawings are illustrated as examples. To verify the reliability of digitization results, it is compared with manual readings. The comparative results show that the two are consistent.
2017,38(4): 187-193 收稿日期：2016-10-19
DOI：10.3969/j.issn.1003-3246.2017.04.031
基金项目：测震台网青年骨干培养专项任务（项目编号：20160523）
作者简介：易天阳(1976-),男,四川遂宁人,硕士,工程师,主要从事地震监测工作。E-mail:sunsky-yi@163.com
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