靶场光测图像小目标中轴线提取方法

摘要

为高精度地提取靶场光测图像弹体小目标的中轴线,提出一种最优区域拟合的小目标中轴线提取方法.分析小目标成像的具体特点,通过迭代过程确定目标的最优描述区域,并由此解算小目标的中轴线方程.实验结果表明,该方法能够较好地适应靶场弹体小目标图像姿态判读需求,具有鲁棒性强、精度高等特点.%To get the axes of small target in images of shooting ranges precisely, a new method based on best fit region of target is proposed.The imaging characteristic of small target is analyzed, and an iteration process is designed to update the fit region of target continuously.Once the best fit region of target is obtained, moment method is used to calculate the axes of target in such region.As a result, the influence of interferer in image is reduced obviously.Experimental results show that this method is efficient and robust to noise, which can meet the requirement of small target 3D pose interpretation in shooting range.