基于空间分布规律的峰值跳变点去除仿真研究

Simulation Study on Removal of Peak Jump Points Based on Spatial Distribution Law

针对多种因素影响下产生的任意斑块半径的峰值跳变点去除,提出采用两点相关函数对峰值跳变点进行分析,将正确位移估计点和峰值跳变点看作两种异质材料,以研究组织位移估计中可能会影响其构成的空间分布因素。通过仿真,分别在计算机仿真数据、仿组织体模数据、真实乳腺超声数据中找到峰值跳变点影响因子分布规律。根据得到的结论对比分析不同峰值跳变点去除算法,提出了基于任意斑块半径的峰值跳变点更优的去除方案,为超声弹性成像中峰值跳变点的去除提供先验信息和参考借鉴。

Aiming at the removal of peak jump points of arbitrary patch radius under the influence of many factors,a two-point correlation function is proposed to analyze the peak jump points.The correct displacement estimation point and peak jump point are regarded as two kinds of heterogeneous materials to study the spatial distribution factors that may affect their composition in tissue displacement estimation.Through simulation experiment,the distribution law of the influence factor of peak jump point was found in the computer simulation data,the simulated tissue modulus data and the real breast ultrasound data.According to the conclusions,the removal algorithms of different peak jump points were compared and analyzed,and a better removal scheme of peak jump points based on arbitrary patch radius was proposed,which provides prior information and reference for the removal of peak jump points in ultrasonic elastic imaging.