scholarly journals Digital Image Stabilization Method Based on Variational Mode Decomposition and Relative Entropy

Entropy ◽  
2017 ◽  
Vol 19 (11) ◽  
pp. 623 ◽  
Author(s):  
Duo Hao ◽  
Qiuming Li ◽  
Chengwei Li
Keyword(s):  
Relative Entropy ◽  
Digital Image ◽  
Variational Mode Decomposition ◽  
Stabilization Method ◽  
Image Stabilization ◽  
Mode Decomposition

scholarly journals Research on Multipoint Leak Location of Gas Pipeline Based on Variational Mode Decomposition and Relative Entropy

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Yongmei Hao ◽  
Zhanghao Du ◽  
Juncheng Jiang ◽  
ZhiXiang Xing ◽  
Xinming Yan ◽  
...  
Keyword(s):  
Relative Entropy ◽  
Technical Problem ◽  
Leak Detection ◽  
Gas Pipeline ◽  
Variational Model ◽  
Pipeline System ◽  
Variational Mode Decomposition ◽  
Leak Location ◽  
Mode Decomposition ◽  
Value Decomposition

Pipeline leak detection has always been a relatively difficult technical problem; especially in urban pipeline leak detection, there are still many problems to be solved. A multipoint leak detection and location method for urban gas pipelines based on variational mode decomposition and relative entropy was proposed. Firstly, the experiment pipeline system was built, and the original signal was collected by acoustic emission technology; then, a variational model method was used to decompose the signal to obtain multiple intrinsic mode function (IMF) components with different characteristic scales. According to the characteristics of relative entropy, each component was analyzed, the appropriate IMF component was selected, and the selected component was reconstructed to obtain the observation signal. The multipoint leakage location model of the urban gas pipeline was established. The number of source signals was estimated by singular value decomposition, and the leakage signals were separated; finally, the accurate location of leakage point was achieved by cross-correlation positioning. The results showed that the average relative error of the pipeline leak location results is 2.97%, and the leak location accuracy is significantly improved, achieving the purpose of precise location.

scholarly journals A novel extraction method for useful component of vibration signal combining variational mode decomposition and relative entropy

AIP Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 035129
Author(s):  
Yong Zhu ◽  
Quanlin Wang ◽  
Yangding Wang ◽  
Shouqi Yuan ◽  
Shengnan Tang ◽  
...  
Keyword(s):  
Relative Entropy ◽  
Extraction Method ◽  
Vibration Signal ◽  
Variational Mode Decomposition ◽  
Mode Decomposition
Sign in / Sign up

Export Citation Format

Share Document