西安交通大学机械制造系统工程国家重点实验室,西安,710049
网络首发:2010-07-10,
纸质出版:2010
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申清明, 高建民, 李成. 焊缝缺陷类型识别方法的研究[J]. 西安交通大学学报, 2010,44(7):100-103.
Recognition of Weld Defect Types[J]. 2010, 44(7): 100-103.
针对焊缝射线检测图像中缺陷类型识别准确度较低的问题
提出了一种基于直接多类支持向量机的缺陷类型识别方法.该方法将焊缝缺陷类型识别问题转化为一个约束优化问题
采用由缺陷边缘特征和区域特征构成的特征向量对缺陷进行描述
解决了在实际训练样本较少的情况下
提高缺陷类型识别准确度的问题.实验表明
该方法的识别准确度为94.25%
比一对一支持向量机和多层感知神经网络的高
并且通过引入区域特征提高了特征组的缺陷描述能力.
To improve the recognition accuracy of weld defects in the radiographic image
a method based on direct multiclass support vector machine(SVM)is proposed to recognize the defect types
where the recognition of weld defects is regarded as a constrained optimization problem
and the edge-based features and region-based features of the weld defect are employed as the feature vector. This method solves the difficulty of achieving higher accuracy under a small training set. The experimental results demonstrate that the recognition accuracy of the method gets 94.25%
higher than that of the one-versus-one SVM and multi-layer perceptron(MLP)neural network
and the introduced region-based features improve the characterization capability of the feature group.
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焊缝缺陷的水淹没分割算法.西安交通大学学报, 2010,44(3):90-94.
复杂体制雷达辐射源信号时频原子特征提取方法.西安交通大学学报, 2010,44(4):108-113.
利用小波分解和支持向量机的心理意识真实性识别研究.西安交通大学学报, 2010,44(4):119-124.
一类支持向量机的设备状态自适应报警方法.西安交通大学学报, 2009,43(11):61-65.
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