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利用计算机自动识别和匹配标靶校正摄影镜头畸变 被引量:5

ens-induced Distortion Calibration Using Computer Automatic Target Recognition and Matching
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摘要 给出了一套通过近景摄影来进行摄影镜头畸变校正的完整方法,它包括准备标靶并摄影、计算机自动识别和匹配标靶标志点、运用最小二乘法解镜头畸变校正系数等步骤.详细讨论了自动识别和匹配标靶算法的各个步骤,包括预处理,二值化,图像分割、细化,线条检测,标志点判别,重建标靶网格和标靶匹配等.在这些算法的基础上,实现了一个完整的系统.通过实例证明了这套方法的正确性和有效性. A compleled method of Calibration of Lens-induced Distortion is discussed,which on a test photographing. It is described as following: take some pictures on a test target; the signs on the pictures are marked and matched by computer automatically; the parameters of lens-induced distortion can be calculated using least square procedure. The algorithm of automatic marking and matching test target is detailed, which contains several approaches: image pre-processing, image binaryzation, image segmentation, sign thinning, line linking, sign recognition, calculating coordinates, grid rebuiding and grid marching. A completed system is implemented based on this algorithm and shows its feasibility and validity in actUal usage.
出处 《北京科技大学学报》 EI CAS CSCD 北大核心 2000年第6期561-564,共4页 Journal of University of Science and Technology Beijing
基金 国家"九五"攻关课题!(No.96-919-01-01-3)
关键词 镜头畸变校正 数字图像处理 计算机自动识别 calibration of lens-induced distortion target recognition digital image processinh
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