双立方插值和二元三次样条插值在心磁图像处理中的应用  

Disposal of MCG-signal Based on the Interpolation

作　　者：宋爱斌[1] 马瑞红[1] 要俊杰[1] 张玲[1] 郑冬云[1] 

机构地区：[1]装甲兵工程学院基础部,北京100072

出　　处：《数学的实践与认识》2012年第11期81-85,共5页Mathematics in Practice and Theory

摘　　要：心磁图是根据人体心脏跳动产生的微弱磁场测量信号计算得到的医学图像,它较心电图诊断心脏疾病具有更高的灵敏度和准确性.为了提高心磁图的成像精度,通常需要对心磁检测数据进行插值处理.提供了双立方插值和二元三次样条插值两种插值方法,应用实例的结果表明,三次样条插值的效果比双立方插值效果好,基本能达到应用的要求.Magnc toca rdiogram（MCG） is a kind of medical image based on measuring the magnetic field of human heart activity, and it has the higher sensitivity and veracity than electrocardiogram when being used to diagnose heart diseases. In order to raise the precision of MCG image the MCGs arc obtained through interpolation pre-processing. The paper provides two interpolation methods, which are two-cubic interpolation and cubic spline interpolation. The results of actual example show that the effect of cubic spline interpolation is better than two-cubic terpolation methods. It basically can fill the applied requirement.

关 键 词：心磁图 双立方插值 三次插值样条 

分 类 号：TN911.73[电子电信—通信与信息系统] O174.42[电子电信—信息与通信工程]