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基于圆序列的多帧对齐和径向畸变校正算法 被引量:2

Circle Video Based Algorithm of Multi-frame Alignment and Lens Distortion Correction
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摘要 传统的相机的畸变校正方法都需要人工干预不能直接计算,即需要事先放置特定的标定参照物或人工指定对应信息。文章提出了一种基于旋转运动视频序列的多帧对齐,可直接计算相机的径向畸变参数。给出了旋转运动参数模型和对齐多帧图像的优化函数以计算畸变参数,推导了目标函数的线性化公式,然后用阻尼最小二乘法优化计算径向畸变参数和旋转运动场参数。试验显示它对变形图像能给出很好的校正。 The traditional methods of correct lens distortion need man inference and don't directly compute.The methods need either calibrated reference objects or the correspondence information that men input.The paper provides the way that can align multi frames and directly compute lens-radlal distortion parameter by circle video.This paper presents rotating motion field and the optimal object function for solving radial lens-distortion parameter.This paper deduces linear formulates of the object function,then computes the parameter and the rotating motion fields with Levenberg-Marquart method.The trial results show the good correction for lens-distortion images.
出处 《计算机工程与应用》 CSCD 北大核心 2006年第15期97-100,共4页 Computer Engineering and Applications
基金 黑龙江省教育厅科学基金资助项目(编号:10551115) 哈尔滨师范大学科研基金资助项目(编号:KM2005-11)
关键词 多帧图像对齐 畸变校正 非线性优化 image alignment,Lens-Distortion Correction,no-linear optimization
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参考文献8

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