基于图像处理的条纹相机扫描非线性修正

熊发田; 白永林; 刘百玉; 欧阳娴; 杨文正; 白晓红; 赵军平

光子学报, 2009, 38 (4): 761, 网络出版: 2010-05-10

基于图像处理的条纹相机扫描非线性修正

Sweep Nonlinearity Correction of Streak Camera Based on Image Processing

论文大纲

熊发田 ^1,2,*白永林 ¹刘百玉 ¹欧阳娴 ¹杨文正 ¹白晓红 ¹赵军平 ¹

作者单位

¹ 中国科学院西安光学精密机械研究所，西安 710119

² 中国科学院研究生院，北京 100049

条纹相机扫描电路扫描非线性非线性修正算法 Streak camera Sweep circuit Nonlinearity of sweep Algorithm of nonlinearity correction

摘要

为了使条纹相机输出图像达到更高的测量准确度，提出一种基于图像处理的扫描非线性修正算法. 该算法根据给出的标称扫描速度拟合出扫描速度曲线，求出每道的扫描速度，取其算术平均值作为一个标准，根据每道的扫描速度与该标准的大小关系来修正像素的位置和亮度. 实验结果表明，可以将测量非线性由原来的8%减小到2%以下.

Abstract

In order to make the streak image closer to the actual object and improve the measuring precision, a correction algorithm based on image processing was presented. The speed curve based on the nominal sweep speed was simulated. Meanwhile, the sweep speed of each channel were corrected and the mean speed as a criterion were got. The position and intensity of each pixel were corrected by comparing the sweep speed of each channel with the mean speed. The result indicates that the algorithm can reduce the nonlinearity to less than 2% from the original 8%.

参考文献

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熊发田, 白永林, 刘百玉, 欧阳娴, 杨文正, 白晓红, 赵军平. 基于图像处理的条纹相机扫描非线性修正[J]. 光子学报, 2009, 38(4): 761. XIONG Fa-tian, BAI Yong-lin, LIU Bai-yu, OU-YANG Xian, YANG Wen-zheng, BAI Xiao-hong, ZHAO Jun-ping. Sweep Nonlinearity Correction of Streak Camera Based on Image Processing[J]. ACTA PHOTONICA SINICA, 2009, 38(4): 761.

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