| 基于正交相干相位检测的图像畸变校正 |
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| 引用本文： | 陈文艺,杨辉.基于正交相干相位检测的图像畸变校正[J].西安邮电学院学报,2013(3):100-103. |
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| 作者姓名： | 陈文艺 杨辉 |
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| 作者单位： | 西安邮电大学物联网与两化融合研究院;西安邮电大学通信与信息工程学院 |
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| 摘 要： | 针对畸变图像提出一种校正方法。以朗奇光栅作为标定模板,通过图像传感器获得畸变条纹图像,并用从畸变图像的中心无畸变区域提取的相干载波,对畸变图像进行正交相干解调,得到畸变图像的相位分布;将相位分布转化为像素坐标畸变量,以得到畸变图像和校正图像的坐标空间映射关系;用双线性插值算法进行图像灰度级重建,从而实现对几何畸变图像的校正。实验结果表明所提方法有效可行。
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| 关 键 词： | 图像处理 畸变校正 相位检测 载频条纹 |
Image distortion correction based on orthogonal coherent phase detection |
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| CHEN Wenyi,YANG Hui.Image distortion correction based on orthogonal coherent phase detection[J].Journal of Xi'an Institute of Posts and Telecommunications,2013(3):100-103. |
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| Authors: | CHEN Wenyi YANG Hui |
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| Affiliation: | 1.Internet of Things and Integration of IT Application and Industrialization Institute, Xi’an University of Posts and Telecommunications,Xi’an 710061,China;(2.School of Communication and Information Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China) |
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| Abstract: | In order to correct a distorted image,the Ronchi grating is used as calibration template in this paper.First,the distorted grating fringe image is captured by image sensor.By demodulating the image with the coherent carrier which extracted from the central region,the phase distribution is obtained.Then the phase distribution is converted to distortion of pixel coordinates.The coordinate space mapping relationship between distorted image and corrected image is built.At last,by reconstructing the grayscale with bi-linear interpolation algorithm,the corrected image is obtained.The experiment results show that this method is feasible. |
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| Keywords: | image processing distortion correction phase detection carrier-fringe |
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