A New Hybrid filtering technique for Despeckling of Ultrasound Images

Author(s):  
Shivam Kumar Pal ◽  
Ankur Bhardwai ◽  
Anand Prakash Shukla
Author(s):  
Shuhada Mohd Rosli ◽  
Marshima Mohd Rosli ◽  
Rosmawati Nordin

Blood glucose (BG) prediction system can help gestational diabetes mellitus (GDM) patient to improve the BG control with managing their dietary intake based on healthy food. Many techniques have been developed to deal with blood glucose prediction, especially those for recommender system. In this study, we conduct a systematic mapping study to investigate recent research about BG prediction in recommender systems. This study describes an overview of research (2014-2018) about BG prediction techniques that has been used for BG recommender system. As results, 25 studies concerning BG prediction in recommender system were selected. We observed that although there is numerous studies published, only a few studies took serious discussion about techniques used to incorporate the BG algorithms. Our result highlighted that only one study discusses hybrid filtering technique in BG recommender system for GDM even though it has an ability to learn from experience and to improve prediction performance. We hope that this study will encourage researchers to consider not only machine learning and artificial intelligent techniques but also hybrid filtering technique for BG recommender system in the future research.


2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Marek Szczepański ◽  
Krystian Radlak

We propose a novel filtering technique capable of reducing the multiplicative noise in ultrasound images that is an extension of the denoising algorithms based on the concept of digital paths. In this approach, the filter weights are calculated taking into account the similarity between pixel intensities that belongs to the local neighborhood of the processed pixel, which is called a path. The output of the filter is estimated as the weighted average of pixels connected by the paths. The way of creating paths is pivotal and determines the effectiveness and computational complexity of the proposed filtering design. Such procedure can be effective for different types of noise but fail in the presence of multiplicative noise. To increase the filtering efficiency for this type of disturbances, we introduce some improvements of the basic concept and new classes of similarity functions and finally extend our techniques to a spatiotemporal domain. The experimental results prove that the proposed algorithm provides the comparable results with the state-of-the-art techniques for multiplicative noise removal in ultrasound images and it can be applied for real-time image enhancement of video streams.


Energies ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 973 ◽  
Author(s):  
Yunlu Li ◽  
Junyou Yang ◽  
Haixin Wang ◽  
Weichun Ge ◽  
Yiming Ma

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