CAJ | 학술논문

本文旨在减少高频超声成像过程中随机噪声对图像的影响。针对高频超声的特点，提出一种新的线平均降噪法。该方法通过在超声图像的每条扫描线上重复发射多个脉冲，接收回波信号并做叠加平均处理，达到降噪效果。该算法无需图像的统计信息，克服了一般滤波方法降低帧频、模糊图像细节的问题，并保留了图像的真实信息，提高了信噪比，最大限度地减少了伪像。通过对眼部房角部位的扫描显示，该方法在滤除图像的噪声点，保持图像细节方面有显著的效果。
본문지재감소고빈초성성상과정중수궤조성대도상적영향。침대고빈초성적특점，제출일충신적선평균강조법。해방법통과재초성도상적매조소묘선상중복발사다개맥충，접수회파신호병주첩가평균처리，체도강조효과。해산법무수도상적통계신식，극복료일반려파방법강저정빈、모호도상세절적문제，병보류료도상적진실신식，제고료신조비，최대한도지감소료위상。통과대안부방각부위적소묘현시，해방법재려제도상적조성점，보지도상세절방면유현저적효과。
To reduce the influence of random noise during imaging according to the feature of high frequency ultrasound.A new line average noise reduction method was designed in this paper.In this method,each scan line of the ultrasonic image was consists of multi-ple-echo data sets,as the ultrasonic pulse was transmitted repeatedly and did average processing on the echoes for noise reducing.The algorithm did not need statistical information of the image,overcoming the problems of general filtering methods,which may reduce the frame frequency and blurs details.When de-noising,this method retained the true image information and improved the signal-to-noise ratio with out vague image.Experiments show that this design has a significant effect on noise filtering and better use for maintai-ning image details .