Spatio-contextual Gaussian mixture model for local change detection in underwater video

2018 ◽  
Vol 97 ◽  
pp. 117-136 ◽  
Author(s):  
Deepak Kumar Rout ◽  
Badri Narayan Subudhi ◽  
T. Veerakumar ◽  
Santanu Chaudhury
Keyword(s):  
Change Detection ◽  
Gaussian Mixture Model ◽  
Mixture Model ◽  
Gaussian Mixture ◽  
Local Change ◽  
Underwater Video

scholarly journals A STUDY OF UNSUPERVISED CHANGE DETECTION BASED ON TEST STATISTIC AND GAUSSIAN MIXTURE MODEL USING POLSAR SAR DATA

2017 ◽  
Vol XLII-2/W7 ◽  
pp. 965-970
Author(s):  
Y. Yang ◽  
W. Liu
Keyword(s):  
Change Detection ◽  
False Alarm ◽  
False Alarm Rate ◽  
Gaussian Mixture Model ◽  
Mixture Model ◽  
Gaussian Mixture ◽  
Constant False Alarm Rate ◽  
Test Statistic ◽  
Polarimetric Sar ◽  
Difference Image

To solve the problems of existing method of change detection using fully polarimetric SAR which not takes full advantage of polarimetric information and the result of false alarm rate of which is high, a method is proposed based on test statistic and Gaussian mixture model in this paper. In the case of the flood disaster in Wuhan city in 2016, difference image is obtained by the likelihoodratio parameter which is built using coherency matrix C3 or covariance matrix T3 of fully polarimetric SAR based on test statistic, and it becomes a reality that the change information is automatic extracted by the parameter of Gaussian mixture model (GMM) of difference image based on the expectation maximization (EM) iterative algorithm. The experimental results show that the overall accuracy of change detection results can be improved and false alarm rate can be reduced using this method by comparison with traditional constant false alarm rate (CFAR) method. Thus the validity and feasibility of the method is demonstrated.

CHANGE DETECTION OF ORDERS IN STOCK MARKETS USING A GAUSSIAN MIXTURE MODEL

2014 ◽  
Vol 21 (3) ◽  
pp. 169-191 ◽  
Author(s):  
Bungo Miyazaki ◽  
Kiyoshi Izumi ◽  
Fujio Toriumi ◽  
Ryo Takahashi
Keyword(s):  
Change Detection ◽  
Gaussian Mixture Model ◽  
Mixture Model ◽  
Stock Markets ◽  
Gaussian Mixture
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