Accurate detection and classification of artifacts within the gastrointestinal(GI)tract frames remain a significant challenge in medical image processing.Medical science combined with artificial intelligence is advanc...Accurate detection and classification of artifacts within the gastrointestinal(GI)tract frames remain a significant challenge in medical image processing.Medical science combined with artificial intelligence is advancing to automate the diagnosis and treatment of numerous diseases.Key to this is the development of robust algorithms for image classification and detection,crucial in designing sophisticated systems for diagnosis and treatment.This study makes a small contribution to endoscopic image classification.The proposed approach involves multiple operations,including extracting deep features from endoscopy images using pre-trained neural networks such as Darknet-53 and Xception.Additionally,feature optimization utilizes the binary dragonfly algorithm(BDA),with the fusion of the obtained feature vectors.The fused feature set is input into the ensemble subspace k nearest neighbors(ESKNN)classifier.The Kvasir-V2 benchmark dataset,and the COMSATS University Islamabad(CUI)Wah private dataset,featuring three classes of endoscopic stomach images were used.Performance assessments considered various feature selection techniques,including genetic algorithm(GA),particle swarm optimization(PSO),salp swarm algorithm(SSA),sine cosine algorithm(SCA),and grey wolf optimizer(GWO).The proposed model excels,achieving an overall classification accuracy of 98.25% on the Kvasir-V2 benchmark and 99.90% on the CUI Wah private dataset.This approach holds promise for developing an automated computer-aided system for classifying GI tract syndromes through endoscopy images.展开更多
远程塔台由于其低成本高时效远程实时控制技术正越来越受到民航业界的青睐,其中运动目标自动检测和显示是远程塔台的核心技术,作为增强现实技术更好地为管制员提供服务。在分析远程塔台机场场面背景复杂、场面目标多为远场景、小目标等...远程塔台由于其低成本高时效远程实时控制技术正越来越受到民航业界的青睐,其中运动目标自动检测和显示是远程塔台的核心技术,作为增强现实技术更好地为管制员提供服务。在分析远程塔台机场场面背景复杂、场面目标多为远场景、小目标等特点基础上,提出了一种改进的You Only Look Once(YOLO)算法来实现远程塔台运动目标的检测,算法核心思想以Darknet-53为基础网络,多尺度预测边界框,以运动目标图像坐标的偏移量作为边框长宽的线性变换来实现边框的回归,改善了传统YOLO算法损失函数不同大小的边框未做区分的问题,提高了检测准确性和速度。机场真实数据实验表明,该算法能快速、准确的检测出远程塔台的运动目标,并准确的回归运动目标边框及分类。展开更多
针对新冠肺炎防控期间肉眼识别判断行人是否佩戴口罩效率低且存在较大风险的问题,提出一种改进检测目标边框损失的自然场景下行人是否佩戴口罩的检测算法.该算法对YOLOv3损失函数进行改进,应用GIoU计算目标边界框损失,完成自然场景下行...针对新冠肺炎防控期间肉眼识别判断行人是否佩戴口罩效率低且存在较大风险的问题,提出一种改进检测目标边框损失的自然场景下行人是否佩戴口罩的检测算法.该算法对YOLOv3损失函数进行改进,应用GIoU计算目标边界框损失,完成自然场景下行人是否佩戴口罩的检测.算法在开源的WIDER FACE数据集和MAFA数据集上训练,采集自然场景图片进行测试,行人是否佩戴口罩的mAP(mean Average Precision)达到了88.4%,取得了较高的检测准确率,在自然场景视频检测中平均每秒传输帧数达到38.69,满足实时检测的要求.展开更多
OBJECTIVE ： The pathogenesis of tardive dyskinesia （TD） is complicated and uncertain, Thus, there is not any effective treatment for it. The psychiatrists pay more and more attention to TD, which lasts for a long t...OBJECTIVE ： The pathogenesis of tardive dyskinesia （TD） is complicated and uncertain, Thus, there is not any effective treatment for it. The psychiatrists pay more and more attention to TD, which lasts for a long time and is difficult to treat. DATA SOURCES： A computer-based online search of Medline database was undertaken to identify articles about the feature of etiology and the progression of treatment for TD published in English by using the keywords of ＂rD, etiology, pathogenesis＂ and ＂TD, therapy, drug treatment＂. Meanwhile, Chinese articles about the feature of etiology and the progression of treatment for TD were searched in Wanfang database and China journal full-text database, and the keywords were ＂TD, etiology, pathogenesis＂ and ＂TD, therapy, drug Treatment＂ in Chinese. STUDY SELECTION： Articles met the following inclusion criteria were selected in this paper. Inclusion criteria： （1） Researches of randomized blind control design, before and after control design and retrospective. （2） Researches of the feature of etiology and the progression of treatment for TD. Exclusion criteria： the repetitive researches and individual reports. DATA EXTRACTION ： Totally 65 articles related the feature of etiology and the progression of treatment for TD of randomized blind control design, before and after control design and retrospective studies were collected, and 53 of them were accorded with the inclusion criteria. Of the 12 excluded ones, 8 were concerning with genetics, 4 were repetitive researches. DATA SYNTHESIS ： The feature of etiology for TD includes：（1） Hypothesis of dopamine receptor super-sensitivity： The dopamine receptor is persistently blocked, so it will result in functional disorder in CNS, and then TD may take place. （2）） Hypothesis of neuronal degeneration： The concentration of aminosuccinic acid and glutamic acid will increase after the antipsychotic used for a long time and this will result in neuronal degeneration through glutamic acid receptor in the postsynaptic membrane; meanwhile with free radical, the nerve cells of corpus striatum may degenerate and become necrosis. （3） Sex and age： The females and gerontal patients are liability to the TD disease. It is may related to the lower estrogen. （4） Molecule heredity： TD may association with the dopamine and 5-HT receptor gene polymorphism. （5） Other theories： Hypofunction of γ-amino-butyri acid （GABA）, hypothesis of noradrenaline 5-serotonin and nutrition metabolism can cause TD disease. Treatlent for TD： （1） Dopamine receptor agonist： The therapeutic effect is not satisfactory, especially for gerontism females. （2） Oxygen free radical scavenger： As represent of vitamin E, it can clear out free radicals and reduce the potential cytotoxic effect of free radicals. （3） Calcium channel blocker： This maybe related to block calcium ions releasing from muscle cells and inhibit muscle convulsion; therefore, it can be used for symptomatic treatment. （4） GABA receptor agonist： It is more effective for the prominent dysmyotonia than dancing slowly symptom. （5） Antipsychotic： There is some therapeutic effect with ciozapine, but the effect will reduce because of the age growing up and the symptom exacerbating. （6） Other therapies： Valproate sodium, cyproheptadine, melatonin, branched chain amino acid, ahalysantinfarctasum, electric acupuncture and injection ad acumen, traditional Chinese drug have a certain effects on TD. Prevention of TD： The serum creatine phosphokinase （CPK） combined with symptoms should be checked regularly so as to early discovery TD. CONCLUSION ： （1） Etiology of TD： The hypothesis of dopamine receptor super-sensitivity is denyed; the hypothesis of neuronal degeneration is approved in academic circles; the sex and age is a finding of generally received; but the dopamine and 5-HT receptor gene polymorphism, hypofunction of GABA, noradrenaline, 5-serotonin and nutrition metabolism cannot explain the pathogenesis of TD. （2） Treatment for TD： The therapeutic effect of dopamine receptor agonist is not satisfactory; the oxygen free radical scavenger maybe effective; calcium channel blocker maybe used for symptomatic treatment; GABA receptor agonist maybe more effective for the prominent dysmyotonia than dancing slowly symptom; the consequence of antipsychotic is discrepancy; other therapies maybe use to adjunctive therapies. （3） As far as prevention of TD is concerned, and the serum CPK combined with symptoms should be checked regularly so as to early discovery TD.展开更多
基金supported by the“Human Resources Program in Energy Technology”of the Korea Institute of Energy Technology Evaluation and Planning(KETEP)and Granted Financial Resources from the Ministry of Trade,Industry,and Energy,Korea(No.20204010600090).
文摘Accurate detection and classification of artifacts within the gastrointestinal(GI)tract frames remain a significant challenge in medical image processing.Medical science combined with artificial intelligence is advancing to automate the diagnosis and treatment of numerous diseases.Key to this is the development of robust algorithms for image classification and detection,crucial in designing sophisticated systems for diagnosis and treatment.This study makes a small contribution to endoscopic image classification.The proposed approach involves multiple operations,including extracting deep features from endoscopy images using pre-trained neural networks such as Darknet-53 and Xception.Additionally,feature optimization utilizes the binary dragonfly algorithm(BDA),with the fusion of the obtained feature vectors.The fused feature set is input into the ensemble subspace k nearest neighbors(ESKNN)classifier.The Kvasir-V2 benchmark dataset,and the COMSATS University Islamabad(CUI)Wah private dataset,featuring three classes of endoscopic stomach images were used.Performance assessments considered various feature selection techniques,including genetic algorithm(GA),particle swarm optimization(PSO),salp swarm algorithm(SSA),sine cosine algorithm(SCA),and grey wolf optimizer(GWO).The proposed model excels,achieving an overall classification accuracy of 98.25% on the Kvasir-V2 benchmark and 99.90% on the CUI Wah private dataset.This approach holds promise for developing an automated computer-aided system for classifying GI tract syndromes through endoscopy images.
文摘远程塔台由于其低成本高时效远程实时控制技术正越来越受到民航业界的青睐,其中运动目标自动检测和显示是远程塔台的核心技术,作为增强现实技术更好地为管制员提供服务。在分析远程塔台机场场面背景复杂、场面目标多为远场景、小目标等特点基础上,提出了一种改进的You Only Look Once(YOLO)算法来实现远程塔台运动目标的检测,算法核心思想以Darknet-53为基础网络,多尺度预测边界框,以运动目标图像坐标的偏移量作为边框长宽的线性变换来实现边框的回归,改善了传统YOLO算法损失函数不同大小的边框未做区分的问题,提高了检测准确性和速度。机场真实数据实验表明,该算法能快速、准确的检测出远程塔台的运动目标,并准确的回归运动目标边框及分类。
文摘针对新冠肺炎防控期间肉眼识别判断行人是否佩戴口罩效率低且存在较大风险的问题,提出一种改进检测目标边框损失的自然场景下行人是否佩戴口罩的检测算法.该算法对YOLOv3损失函数进行改进,应用GIoU计算目标边界框损失,完成自然场景下行人是否佩戴口罩的检测.算法在开源的WIDER FACE数据集和MAFA数据集上训练,采集自然场景图片进行测试,行人是否佩戴口罩的mAP(mean Average Precision)达到了88.4%,取得了较高的检测准确率,在自然场景视频检测中平均每秒传输帧数达到38.69,满足实时检测的要求.
文摘OBJECTIVE ： The pathogenesis of tardive dyskinesia （TD） is complicated and uncertain, Thus, there is not any effective treatment for it. The psychiatrists pay more and more attention to TD, which lasts for a long time and is difficult to treat. DATA SOURCES： A computer-based online search of Medline database was undertaken to identify articles about the feature of etiology and the progression of treatment for TD published in English by using the keywords of ＂rD, etiology, pathogenesis＂ and ＂TD, therapy, drug treatment＂. Meanwhile, Chinese articles about the feature of etiology and the progression of treatment for TD were searched in Wanfang database and China journal full-text database, and the keywords were ＂TD, etiology, pathogenesis＂ and ＂TD, therapy, drug Treatment＂ in Chinese. STUDY SELECTION： Articles met the following inclusion criteria were selected in this paper. Inclusion criteria： （1） Researches of randomized blind control design, before and after control design and retrospective. （2） Researches of the feature of etiology and the progression of treatment for TD. Exclusion criteria： the repetitive researches and individual reports. DATA EXTRACTION ： Totally 65 articles related the feature of etiology and the progression of treatment for TD of randomized blind control design, before and after control design and retrospective studies were collected, and 53 of them were accorded with the inclusion criteria. Of the 12 excluded ones, 8 were concerning with genetics, 4 were repetitive researches. DATA SYNTHESIS ： The feature of etiology for TD includes：（1） Hypothesis of dopamine receptor super-sensitivity： The dopamine receptor is persistently blocked, so it will result in functional disorder in CNS, and then TD may take place. （2）） Hypothesis of neuronal degeneration： The concentration of aminosuccinic acid and glutamic acid will increase after the antipsychotic used for a long time and this will result in neuronal degeneration through glutamic acid receptor in the postsynaptic membrane; meanwhile with free radical, the nerve cells of corpus striatum may degenerate and become necrosis. （3） Sex and age： The females and gerontal patients are liability to the TD disease. It is may related to the lower estrogen. （4） Molecule heredity： TD may association with the dopamine and 5-HT receptor gene polymorphism. （5） Other theories： Hypofunction of γ-amino-butyri acid （GABA）, hypothesis of noradrenaline 5-serotonin and nutrition metabolism can cause TD disease. Treatlent for TD： （1） Dopamine receptor agonist： The therapeutic effect is not satisfactory, especially for gerontism females. （2） Oxygen free radical scavenger： As represent of vitamin E, it can clear out free radicals and reduce the potential cytotoxic effect of free radicals. （3） Calcium channel blocker： This maybe related to block calcium ions releasing from muscle cells and inhibit muscle convulsion; therefore, it can be used for symptomatic treatment. （4） GABA receptor agonist： It is more effective for the prominent dysmyotonia than dancing slowly symptom. （5） Antipsychotic： There is some therapeutic effect with ciozapine, but the effect will reduce because of the age growing up and the symptom exacerbating. （6） Other therapies： Valproate sodium, cyproheptadine, melatonin, branched chain amino acid, ahalysantinfarctasum, electric acupuncture and injection ad acumen, traditional Chinese drug have a certain effects on TD. Prevention of TD： The serum creatine phosphokinase （CPK） combined with symptoms should be checked regularly so as to early discovery TD. CONCLUSION ： （1） Etiology of TD： The hypothesis of dopamine receptor super-sensitivity is denyed; the hypothesis of neuronal degeneration is approved in academic circles; the sex and age is a finding of generally received; but the dopamine and 5-HT receptor gene polymorphism, hypofunction of GABA, noradrenaline, 5-serotonin and nutrition metabolism cannot explain the pathogenesis of TD. （2） Treatment for TD： The therapeutic effect of dopamine receptor agonist is not satisfactory; the oxygen free radical scavenger maybe effective; calcium channel blocker maybe used for symptomatic treatment; GABA receptor agonist maybe more effective for the prominent dysmyotonia than dancing slowly symptom; the consequence of antipsychotic is discrepancy; other therapies maybe use to adjunctive therapies. （3） As far as prevention of TD is concerned, and the serum CPK combined with symptoms should be checked regularly so as to early discovery TD.
