In this paper, we propose a Secure Energy Management System (SEMS) with anomaly detection and Q-Learning decision modules for Automated Guided Vehicles (AGV). The anomaly detection module is a multi-task learning netw...
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An important issue in the analysis of two-dimensional electrophoresis images is the detection and quantification of protein spots. The main challenges in the segmentation of 2DGE images are to separate overlapping pro...
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Background and Objective: Videodermoscopy is the gold standard in melanoma diagnosis. A new research trend aims to support specialists’ work by automating this examination method, but most research focuses on develop...
Background and Objective: Videodermoscopy is the gold standard in melanoma diagnosis. A new research trend aims to support specialists’ work by automating this examination method, but most research focuses on developing detectors to replace dermatologists. Our study aims to present a novel idea which focuses on supporting the examination process instead of completely automating it. Instead of detecting and classifying all naevi each time, our approach focuses on full screening at the first visit and shortening the examination at subsequent visits. During the following examinations, images of all naevi are taken by supporting staff and are compared with previously taken images using feature-matching or co-registration-based algorithms. An unmatched naevus needs to be checked by the specialist, meaning that a new naevus appeared or an old one had changed. Methods: The similarity between images (ranging from 0% to 100%) was obtained with characteristic points searching (ORB method) and co-registration-based methods. No dataset presenting changes of naevi over time exists, so augmenting the images from PH2 and HAM10000 datasets was required to simulate the time flow. Results: The decision bound was set, so the true positive rate of each method was equal to 99%, giving the specificity of ORB equal to 97% (PH2) and 89% (HAM10000). Similar tests were performed using a co-registration algorithm giving specificity equal to 23% (PH2) and 19% (HAM10000). Conclusions: We believe that employing our approach will allow supporting staff to perform screening without experts’ help, decreasing examination time and costs and increasing the accessibility of dermoscopic examinations.
作者：
Hanzel, KrzysztofDepartment of Electronics
Electrical Engineering and Microelectronics Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology Akademicka 16 Gliwice44-100 Poland
Object tracking for consumer drones is currently a rapidly developing technology. Its implementation is currently carried out with the use of object-in-image detection, which often limits the latest possibilities of t...
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Non-invasive estimation of chlorophyll content in plants plays an important role in precision agriculture. This task may be tackled using hyperspectral imaging that acquires numerous narrow bands of the electromagneti...
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This paper presents the HTTP request global distribution using the fuzzy-neural decision making mechanism. Two efficient algorithms GARDiB and GARDiB2 are proposed to support HTTP request routing to the Websites. The ...
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New developments in computer networks and communications provide new possibilities for control purposes. control systems for highly complex plants are themselves very complex and heterogeneous. A new software infrastr...
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This article presents an analysis of how pulses in the long two-conductor coupled lines with conductor screened interact mutually. The interaction of pulses appears in those places of the line, where there is a change...
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This article presents an analysis of how pulses in the long two-conductor coupled lines with conductor screened interact mutually. The interaction of pulses appears in those places of the line, where there is a change of wave impedance causing a change in reflection coefficient for pulses moving along the line. An exemplary analysis is performed for a homogenous lossless line at its starting and terminal points. The results of analysis are analytical expressions describing quantitative interactions of pulses. The expressions are verified both by computer simulation and by measurements of the real line. There has been performed the analysis of influence of the resistances with which the terminal points of the line are loaded onto the amplitude value of the pulses registered at the starting point of the line. The new method and the new system of measurements of pulses have been proposed that minimize the interaction of pulses at the starting point of the line, disadvantageous for the process of fault location by using pulse method.
This paper presents an analysis how the pulses in the long three-conductor coupled lines with common screen interact mutually. The interaction of pulses appears in those places of the line, where there is a change in ...
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This paper presents an analysis how the pulses in the long three-conductor coupled lines with common screen interact mutually. The interaction of pulses appears in those places of the line, where there is a change in characteristic impedance causing a change in reflection coefficient for pulses moving along the line. An exemplary analysis is conducted for a homogenous lossless line both at its starting and terminal point. The results of the analysis are analytical expressions describing quantitative interactions of pulses. The expressions are verified numerically and experimentally involving measurements of the real-life line. The mutual interaction of pulses can be useful in location of faults in electric power lines by means of the pulses method.
The paper presents regulation characteristics that fulfill the requirements of highest possible efficiency and strongly reduced torque ripple level. For switched reluctance motors it is not so simple and obvious, beca...
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The paper presents regulation characteristics that fulfill the requirements of highest possible efficiency and strongly reduced torque ripple level. For switched reluctance motors it is not so simple and obvious, because the regulation characteristics depend on three variables: phase voltage, switch-on and switch-off angles. For this reason in a steady state the same operation point (Tl, ω) of the mechanical characteristic is attainable for quite different values of those control parameters. So there is a field for quasi-optimal operation and the choice of the coresponding control parameters is the main subject of this work. The paper presents also the method to determine these quasi-optimal control characteristics from simple tests or from computations based on presented simple mathematical model.
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