利用计算机自动识别和匹配标靶校正摄影镜头畸变

ens-induced Distortion Calibration Using Computer Automatic Target Recognition and Matching

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.