一种实现初至波自动拾取的方法

An automatic method to pick up the first break time

成都理工大学信息工程学院,四川成都 610059

Chengdu Univerisity of Science and Technology, Chengdu 610059, China

根据初至波特点,基于数字图像处理技术,提出了应用边缘检测和边缘追踪技术进行初至波自动拾取的方 法。该方法的实现过程为:①对地震记录做单道归一化处理;②将地震记录转化为灰度图;③应用边缘检测方法 确定初至波的位置;④采用中值滤波处理消除异常点干扰;⑤利用边缘追踪算法拾取初至波。实例表明,应用边 缘检测和边缘追踪技术进行初至波自动拾取快速有效。

The digital image processing such as edge detection and boundary tracing to pick up the first break time is discussed in this paper, which based on the specialty of first break time. Have put forward a kind of new train of thought for picking up the first break time. Firstly, we make gradation processing to the seismic data. Secondly, we turn the seismic graph into a gray graph. Third, we determine the position of arrival time of the first wave by u sing edge detection processing. Fourth, we process the data using a filter. Last, we pick up the arrival time of the first wave by using boundary tracing. This method can improve production efficiency greatly by picking up the first break time automatically.