基于变分分割模型的结冰冰形测量方法

发布时间：2018-03-12 16:38

本文选题：飞机结冰　切入点：结冰风洞　出处：《航空学报》2017年01期 　论文类型：期刊论文

【摘要】：结冰冰形是结冰风洞试验中关注的要素之一,针对其冰形测量问题,提出了一种基于变分图像分割技术的非接触测量方法。基本思路是对翼型结冰俯视图像进行图像分割,将获得的曲线标定后与翼型数模结合,得到最终结冰冰形。为了排除结冰图像中不相干物体和因素的干扰,更精确获取结冰冰形,提出了选择分割的思想,构造了区域特征函数,建立了新的能量函数。采用所提基于变分分割模型的测量方法,对结冰风洞试验冰形进行了测量,并定量分析了方法的误差,测试了方法的抗噪声能力。结果表明该方法对结冰冰形的测量是准确可行的,且具有较高的精度,另外,其对噪声具有鲁棒性。所提方法可推广至其他与物体形状相关的测量中。
[Abstract]:Ice formation is one of the important factors in icing wind tunnel test. A non-contact measurement method based on variational image segmentation technique is proposed for ice shape measurement. The basic idea is to segment airfoil icing overlooking image. The obtained curve is calibrated with the airfoil mathematical model to obtain the final ice ice form. In order to eliminate the interference of the incoherent objects and factors in the ice forming image, the idea of selective segmentation is put forward to obtain the ice ice shape more accurately. The region characteristic function is constructed and a new energy function is established. The ice shape of icing wind tunnel test is measured by the proposed measurement method based on variational partitioning model, and the error of the method is quantitatively analyzed. The anti-noise ability of the method is tested. The results show that the method is accurate and feasible, and has a high accuracy. It is robust to noise, and the proposed method can be extended to other shape related measurements.
【作者单位】：中国空气动力研究与发展中心空气动力学国家重点实验室;中国空气动力研究与发展中心计算空气动力研究所;
【基金】：国家自然科学基金(11172314,11472296) 国家重点基础研究发展计划(2015CB755800)~~
【分类号】：TP391.41;V211.74

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