Grading heart sounds through variational mode decomposition and higher order spectral features

2018 ◽  
Author(s):  
Madhusudhan Mishra ◽  
Sawon Pratiher ◽  
Sanmitra Banerjee ◽  
Anirban Mukherjee
Keyword(s):  
Higher Order ◽  
Heart Sounds ◽  
Spectral Features ◽  
Variational Mode Decomposition ◽  
Mode Decomposition

scholarly journals Automated Segmentation of Infarct Lesions in T1-Weighted MRI Scans Using Variational Mode Decomposition and Deep Learning

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 1952
Author(s):  
May Phu Paing ◽  
Supan Tungjitkusolmun ◽  
Toan Huy Bui ◽  
Sarinporn Visitsattapongse ◽  
Chuchart Pintavirooj
Keyword(s):  
Deep Learning ◽  
Brain Infarction ◽  
Three Dimensional ◽  
Dice Similarity Coefficient ◽  
Automated Segmentation ◽  
Variational Mode Decomposition ◽  
Brain Scans ◽  
Automated Method ◽  
Mode Decomposition ◽  
Segmentation Task

Automated segmentation methods are critical for early detection, prompt actions, and immediate treatments in reducing disability and death risks of brain infarction. This paper aims to develop a fully automated method to segment the infarct lesions from T1-weighted brain scans. As a key novelty, the proposed method combines variational mode decomposition and deep learning-based segmentation to take advantages of both methods and provide better results. There are three main technical contributions in this paper. First, variational mode decomposition is applied as a pre-processing to discriminate the infarct lesions from unwanted non-infarct tissues. Second, overlapped patches strategy is proposed to reduce the workload of the deep-learning-based segmentation task. Finally, a three-dimensional U-Net model is developed to perform patch-wise segmentation of infarct lesions. A total of 239 brain scans from a public dataset is utilized to develop and evaluate the proposed method. Empirical results reveal that the proposed automated segmentation can provide promising performances with an average dice similarity coefficient (DSC) of 0.6684, intersection over union (IoU) of 0.5022, and average symmetric surface distance (ASSD) of 0.3932, respectively.

Single-ended line fault location method for multi-terminal HVDC system based on optimized variational mode decomposition

2021 ◽  
Vol 194 ◽  
pp. 107054
Author(s):  
Qing Huai ◽  
Kaipei Liu ◽  
Ali Hooshyar ◽  
Hua Ding ◽  
Kun Chen ◽  
...  
Keyword(s):  
Fault Location ◽  
Variational Mode Decomposition ◽  
Location Method ◽  
Hvdc System ◽  
Mode Decomposition
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