论文部分内容阅读
激光主动成像系统具有分辨率高、抗干扰能力强、能成三维像等特点。为了满足成像系统对扫描速度的要求,行扫描器采用了正弦扫描方式,但激光器等时发射经过扫描器后将形成扫描方向上光点的空间分布不均匀,从而造成系统所成图像的几何失真。分析了几何失真的形成机理,并根据此机理提出了两种校正算法。将这两种算法应用于仿真图像和实际的激光图像,取得了满意的效果。比较两种算法表明:采用算法2进行激光成像系统图像几何失真的校正更为合适。
Active laser imaging system with high resolution, anti-interference ability, into a three-dimensional image and so on. In order to meet the requirements of the imaging system for the scanning speed, the line scanner adopts a sinusoidal scanning method. However, when the laser isochronous emission passes through the scanner, the spatial distribution of the light spots in the scanning direction will be unevenly distributed, resulting in the geometric distortion of the image formed by the system . The formation mechanism of geometric distortion is analyzed, and two correction algorithms are proposed according to the mechanism. The two algorithms are applied to the simulation images and the actual laser image, and achieved satisfactory results. Comparing the two algorithms shows that the algorithm 2 is more suitable for correcting the geometric distortion of the laser imaging system.