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；
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.
数字记录的初至波早于模拟记录，且持续时间较长，大部分的数字地震震级比模拟记录、标准震级小。
The first array wave in digital record is earlier than that in analog record, and with longer duration. It also found that the most of the ear...
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