地下介质横向变化的地震多尺度边缘检测技术

本文提出的地震多尺度边缘检测技术以坎尼最佳边缘检测准则和小波变换的多分辨分析为理论基础，能在地震记录上较方便而可靠地识别地下介质的横向变化。这些横向变化包括不能用肉眼在地震同相轴上直接发现而又实际存在的隐蔽特征。对地层尖灭，透镜体、岩性变化和孔洞、裂缝发育带均可进行识别。模型计算和实际地震资料的处理结果显示该方法具有实际应用价值

LATERAL IDENTIFICATION BY SEISMIC MULTI-SCALE EDGE DETECTION

Geological lateral variances in the earth, involving stratigraphic pinch out, sand lens, lithologic variance, fracture, fault, cave et al. are quite important for resource, environment and engineering survey. In this paper a seismic multi scale edge detection (SMED) technique is proposed for detecting those variances from seismic data. SMED is based on Canny optimal edge detection principle and multi scale wavelet analysis and is able to map those anomalies efficiently even if the variances are subtle in seismic events. Numerical calculating and real seismic data processing results show that the above technique is reliable.