一种高效的示波器数字荧光图像处理映射法  

Efficient mapping method for DPO image processing

作　　者：向前[1] 刘洪庆[1,2] 包思云[1] 邵成华[1] 

机构地区：[1]中国电子科技集团公司第四十一研究所,青岛266555 [2]电子信息测试技术安徽省重点实验室,蚌埠233010

出　　处：《电子测量技术》2016年第3期56-59,共4页Electronic Measurement Technology

摘　　要：本文针对示波器的数字荧光图像处理中传统后向映射法计算效率低的问题,提出了一种高效的图像映射方法。针对示波器数字荧光图像的特点,基于双线性插值算法,推导出前向搜索方法,在运算过程中免除了背景部分的处理,减少了计算量。理论仿真和研究结果表明,该方法在保证峰值信噪比的同时,能有效提高图像映射的运算效率,在背景占很大比例的示波器数字荧光图像处理中效果更加明显。实验结果证实了此方法的合理性和有效性,通过减少采集死区时间,提高了示波器的波形捕获率。This paper proposes an efficient geometric transformation method in order to improve the computing efficiency,which is low caused by the conventional backward mapping method,in Digital Phosphor Oscilloscope（DPO）image processing.To make use of the feature of DPO image,the proposed method transfers the direction of the backward bilinear interpolation algorithm to forward,so the great calculation relating to background pixels can be ignored.Theoretical simulator and research results show that the proposed method can effectively accelerate the image processing,at the same time,avoid reducing peak signal-noise ratio（PSNR）.Its effect is more obvious in DPO image processing,which includes many background pixels.Experimental results show that the probability of abnormal capture is improved because of the shorter acquisition dead time,so demonstrate the proposed method is reasonable and effective.

关 键 词：数字荧光示波器 图像映射 双线性插值 峰值信噪比 

分 类 号：TM935.37[电气工程—电力电子与电力传动]