CAJ | 학술논문

在激光照射性能监测系统的外场试验中，大气湍流等环境因素降低了光斑检测的准确性；同时传统的光斑检测方法在处理高分辨率CCD图像时速度较慢，难以满足实时处理的要求。为解决以上问题，提出一种激光照射光斑检测方法。首先采用自适应阈值法和投影法相结合的方法，将图像分割出一个或多个待检测区域；再根据靶板与成像系统的空间关系，预测当前光斑形态，并制作检测模型，对待检测区域进行相似度检测确定最优目标区域；最后对最优目标区域采用连通域分析提取光斑。实验结果表明：对于分辨率为1392×1040的图像，不仅能准确检测出光斑，还提高了检测速度，实现准确、稳定、快速的检测光斑，为激光照射器性能的评估提供可靠、有效的依据。
재격광조사성능감측계통적외장시험중，대기단류등배경인소강저료광반검측적준학성；동시전통적광반검측방법재처리고분변솔CCD도상시속도교만，난이만족실시처리적요구。위해결이상문제，제출일충격광조사광반검측방법。수선채용자괄응역치법화투영법상결합적방법，장도상분할출일개혹다개대검측구역；재근거파판여성상계통적공간관계，예측당전광반형태，병제작검측모형，대대검측구역진행상사도검측학정최우목표구역；최후대최우목표구역채용련통역분석제취광반。실험결과표명：대우분변솔위1392×1040적도상，불부능준학검측출광반，환제고료검측속도，실현준학、은정、쾌속적검측광반，위격광조사기성능적평고제공가고、유효적의거。
In the process of laser performance monitoring, atmospheric turbulence and other environmental factors will reduce the measurement accuracy. High-resolution CCD detector can improve the measurement accuracy but also in-creases the time complexity, reduces the detection speed. To solve this problem, propose a method of rapid detection to laser-irradiated spot. Firstly,segment the image on the basis of adaptive threshold method;secondly,project to the segmentation image, and segmented one or more of the detecting regions according to the projection curve. Thirdly, predict the current spot morphology on the basis of CCD imaging theory,then test similarity detection to region,which is to be detected, to determine the optimal target region. Finally, use connected component analysis to determine spot region in the optimal target region. The results of experiments show that:for the image whose resolution is 1392 × 1040, this method not only detect the spot accurately but also increase the spot detection speed in measurement sys-tem, achieve the rapid, precise and stable detection of the laser spot, and provide reliable and efficient basis for the evaluation of the performance of laser irradiator.