基于多层B样条插值的干涉合成孔径声呐配准偏移量插值算法  

Coregistration Offset Interpolating Algorithm for InSAS Based on Multilevel B-spline Interpolation

作　　者：张森[1] 陈鸣[1] 唐劲松[1] 

机构地区：[1]海军工程大学电子工程学院,武汉430033

出　　处：《武汉理工大学学报（交通科学与工程版）》2013年第6期1230-1234,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家"863"计划项目(批准号:2007AA091101);国家自然科学基金项目(批准号:61072092;61101205)资助

摘　　要：针对干涉合成孔径声呐对配准精度要求较高而局部配准偏移量相差比较大的问题,提出采用多层B样条曲面插值实现配准偏移量的插值,既保证配准偏移量的插值精度,又能保证拟合曲面的光滑性.采用仿真数据和实际干涉合成孔径声呐数据验证了算法的性能,结果表明,提出的插值算法能有效提高插值精度和图像的相干系数,且能达到实时处理要求.A coregistration offset interpolating algorithm based on Multilevel B-spline interpolation is proposed for interferometric synthetic aperture sonar （InSAS）, because coregistration precision of InSAS should be less than 1/10 pixel and its coregistration error is often varied in a large scope. The proposed method can obtain precise coregistration offset interpolation and smooth interpolating curve. The simulated and real InSAS datasets are used to validate the performance of the algorithm. The results indicate that the proposed method can improve the interpolating precision and coherence of images, and can process in real time in InSAS system.

关 键 词：干涉合成孔径声纳 多层B样条插值 图像配准 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置]