摘要
在激光照射器性能监测系统中,针对靶板的运动特性、连续采集的目标靶板图像有不同程度畸变等情况,提出一种以转台相对角度作为畸变参量对连续远场图像进行畸变校正的方法:在建立世界坐标系和图像坐标系的前提下,利用一张参考图象选取的四个特征点及转台编码器提供的俯仰/方位角,建立远场图像畸变校正的数学模型,实现对连续远场图像的快速校正。通过测试数据表明,该畸变校正方法对运动过程中靶板的校正精度为0.3pixel,为激光照射性能监测系统后续计算提供了准确有效的远场图像。
In the performance monitoring system of the laser irradiator,a method for correcting the distortion of continuous far-field images by using the relative angle of the turret as a distortion parameter was proposed in view of the movement characteristics of the target plate and the distortion of the continuously acquired target image. With the introduction of the world coordinate system and the image coordinate system,the four feature points were selected in the reference image and the pitch/azimuth was provided by the turret encoder to establish a mathematical model for far field image distortion correction in this method. Fast correction of continuous far-field images was realized. The test data showed that this distortion correction method corrected the target board's correction accuracy to one pixel during the movement,which provided an accurate and effective far-field image for the subsequent calculation of the laser irradiation performance monitoring system.
作者
罗秦
景文博
徐向楷
LUO Qin;JING Wenbo;XU Xiangkai(School of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun 130022)
出处
《长春理工大学学报（自然科学版）》
2019年第2期22-26,共5页
Journal of Changchun University of Science and Technology(Natural Science Edition)
基金
吉林省科技厅项目(20170623004TC
20160204009GX)
关键词
图像处理
图像校正
透视变换
转台角度
image process
image rectification
perspective transformation
turnable azimuth
