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Design on Composite Cascade Mathematical Morphology Filter and Its Application in Signal Processing  
Xiaodong Zhang1,Ping Zhang2,Qi Zhang3,Sanyong Yan4,Xiaoni Dong5
*1, Xi’an Jiaotong University, Email : xdzhang@mail.xjtu.edu.cn
2, Xi’an Jiaotong University, Email : ping.zhang@stu.xjtu.edu.cn
3, Xi’an Jiaotong University, Email : zhangqi123@stu.xjtu.edu.cn
4, Xi’an Jiaotong University, Email : yansanyong111@163.com
5, Xi’an Jiaotong University, Email : birdy_dong@163.com
 
Abstract .In order to eliminate the pulse and noise interference of the weak signal, a filtering algorithm based on the composite cascade mathematical morphology is investigated in this paper, which mainly includes the principle analysis of morphological filter, the structure design of the filter element, and the construction of the composite cascade mathematical morphology. Finally, by simulation analysis and experimental verification, the results show that the implementation of the filtering algorithm based on the composite cascade mathematical morphology is simple and fast, and it can effectively filter out the pulse interference and random noise interference of the weak signal such as the actual oil film thickness signal obtained by the fiber optic displacement sensor. Furthermore, the filtering algorithm will play a very important role for the feature extraction of the weak electroencephalography signal.
 
Keywords : fiber optic displacement sensor ; oil film thickness ; morphological filter
 URL: http://dx.doi.org/10.7321/jscse.v3.n3.117  
 
 

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