【摘要】 提出了一种基于提升格式小波的地震数据压缩算法,该算法针对地震数据信号及其噪声的特点,首先利用提升格式小波对地震数据进行小波变换,然后结合嵌入式零树编码的思想,对变换后的小波系数采用改进的SPIHT算法进行编码。研究结果表明:本文所提出的算法能实现海量地震数据的快速编码,达到了对地震数据的高保真压缩;本算法实现的编解码时间快,同时解压的地震剖面图视觉效果要优于目前的离散小波压缩算法。更多还原

【Abstract】 Specific to the feature of seismic data signal and noise,and combining the embedded zerotree code,this paper proposes an encoding algorithm of seismic data compression based on the lifting wavelet transform;this algorithm uses the lifting scheme of Daubechies9/7,and codes the coefficient by improved SPIHT.The results of the method are obtained for real seismic data.The experiment indicates that the program can code the large seismic data quickly,achieve the high fidelity compression of seismic data,and has well practical value.更多还原