This paper verified the effectiveness of the fault diagnosis method based on 2d-hmm for centrifugal pump, by applying several signal feature extraction methods combining 2d-hmm model.
在应用本文所采用的几种信号特征提取方法的基础上，结合2d -HMM模型，验证了基于2d - H MM的离心泵故障诊断方法的有效性。
A new wood color feature extraction method combining image block theory was given on the basis of the previous studies.
该文借助知识理论，提出一种新的基于子图像块的区域分割与边缘检测相结合的目标提取方法。
A new wood color feature extraction method combining image block theory was given on the basis of the previous studies.
该文借助知识理论，提出一种新的基于子图像块的区域分割与边缘检测相结合的目标提取方法。
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