基于区域特征的线阵CCD图像自适应校正  

Regional characteristics based Adaptive correction algorithm for linear array CCD images

作　　者：尹楠[1] 顾济华[1] 邹丽新[1] 周强[1] 马心儒[1] 

机构地区：[1]苏州大学物理科学与技术学院,江苏苏州215006

出　　处：《现代电子技术》2013年第4期51-55,共5页Modern Electronics Technique

摘　　要：针对田径比赛中运动员到达终点时线阵CCD采集到的失真图像进行处理,通过对扫描同步的分析,得到了失真图像产生原因,提出了一种自适应的校正算法。首先经形态学处理得到运动员头部的倾角及长宽比,进而得到对应角度的变换因子;然后以头部为中心,在水平方向左右取合适长度,得到运动员水平方向上的边缘横坐标并剪裁图像;最后使用二维变换矩阵对该图像进行插值投影变换。仿真实验表明,该算法简单易行,能较好地还原失真图像。并且通过对正常图像拉伸的仿真分析,得到较为满意的结果。An adaptive correction algorithm is proposed in this paper to correct the distorted linear CCD images when the athletes reach the finish line in a track competition. Firstly, the head inclination and aspect ratio of the athletes are got by using morphological processing for obtaining the transformation factor corresponding to the angle. Then the athlete head is taken as a center, and the appropriate length in the horizontal direction is selected to get the edge abscissa in the horizontal direction to the athlete, and clip the image. The two-dimensional transform matrixes are adopted to make the interpolation projective transfor- mation of the image. The simulation result shows that this algorithm is easy to implement and can restore the distorted images. The satisfying result can be obtained through simulation analysis on the stretch of the normal images.

关 键 词：线阵CCD 图像校正 投影变换 径赛 

分 类 号：TN964.34[电子电信—信号与信息处理]