作者：刘桂雄1, 李筹1, 唐文明1,2, 洪晓斌1
作者单位：1. 华南理工大学机械与汽车工程学院, 广东 广州 510640;
2. 广州多浦乐电子科技有限公司, 广东 广州 510663
关键词：合成孔径聚焦; 相关性分析; 延迟聚焦; 超声成像
摘要：
针对超声经典合成孔径聚焦(SAFT)算法需对每点进行延迟聚焦、运算量大等问题,提出基于相关性延迟分析的合成孔径聚焦算法,并建立数学模型,采用Matlab分别对经典SAFT算法和基于相关性延迟分析的SAFT算法进行仿真分析。结果表明:基于相关性延迟分析的SAFT算法具有图像质量优、分辨率高、实时性好等特点。
Synthetic aperture focusing technology based on correlation-delay in ultrasonic imaging
LIU Gui-xiong1, LI Chou1, TANG Wen-ming1,2, HONG Xiao-bin1
1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;
2. Guangzhou Doppler Electronic Technologies Co., Led, Guangzhou 510663, China
Abstract: The conventional synthetic aperture focusing (SAFT) needs to be focused point to point, which may consume cause massive calculation. So a new SAFT algorithm based on correlation-delay was proposed. The principle of the new SAFT algorithm was introduced and Matlab simulated programs were used to analyze the two algorithms. The result illustrates that the new SAFT algorithm is more accurate, more efficient with higher lateral resolution.
Keywords: synthetic aperture focusing; correlation-delay analysis; delay-focusing; ultrasonic imaging
2014, 40(1): 62-65 收稿日期: 2013-8-28;收到修改稿日期: 2013-10-24
基金项目: 国家重大科学仪器设备开发专项(2013YQ230575)
作者简介: 刘桂雄(1968-),男,广东揭阳市人,教授,博导,博士,主要从事先进传感器与仪器研究。
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