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航空学报  2013 

SUSAN角点检测和匹配算法在高温变形测量中的应用

DOI: 10.7527/S1000-6893.2013.0195, PP. 1064-1072

Keywords: 高温,应变测量,机器视觉,图像匹配,特征提取

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Abstract:

高温变形测量是材料力学性能实验方法研究中的重点和热点之一。为了能够实现在高温环境下精确地进行变形测量,将最小核值相似区(SUSAN)角点检测和光流跟踪匹配技术应用到位移和应变测量方面,设计了基于SUSAN角点特征的高温变形测量算法。该算法充分发挥了SUSAN角点特征的优点,具有测量精度高、抗干扰能力强等优点。在普通环境下,经过模拟散斑图数据的验证,利用该算法进行变形测量,误差在1%以内,精度高、稳定性好。通过高温力学实验发现,该算法能够适用于高温变形测量。本研究扩展了图像识别等技术在非接触测量技术中的应用。

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