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| 基于图像处理的条纹相机扫描非线性修正 | |
| 引用本文： | 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):761-765. |
| 作者姓名： | 熊发田 白永林 刘百玉 欧阳娴 杨文正 白晓红 赵军平 |
| 作者单位： | 1. 中国科学院西安光学精密机械研究所,西安,710119;中国科学院研究生院,北京,100049 2. 中国科学院西安光学精密机械研究所,西安,710119 |
| 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. |
| 关 键 词： | 条纹相机 扫描电路 扫描非线性 非线性修正算法 |
| 收稿时间： | 2007-12-25 |
| 修稿时间： | 2008-03-20 |
Sweep Nonlinearity Correction of Streak Camera Based on Image Processing |
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| XIONG Fa-tian,BAI Yong-lin,LIU Bai-yu,OUYANG 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):761-765. | |
| Authors: | XIONG Fa-tian BAI Yong-lin LIU Bai-yu OUYANG Xian YANG Wen-zheng BAI Xiao-hong ZHAO Jun-ping |
| Institution: | 1. Graduate School of the Chinese Academy of Sciences,Beijing 100049,China 2. Xi′an Institute of Optics and Precision Mechanic,Chinese Academy of Sciences,Xi′an710119,China |
| 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%. |
| Keywords: | Streak camera Sweep circuit Nonlinearity of sweep Algorithm of nonlinearity correction |
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