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Saliency detection of infrared image based on region covariance and global feature

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Journal of Systems Engineering and Electronics 2018年第3期29卷 483-490页

作者： liu songtao JIANG Ning liu Zhenxing JIANG Kanghui Department of Information Operation Dalian Naval Academy

In order to better represent infrared target features under different environments, a saliency detection method based on region covariance and global feature is proposed. Firstly, the region covariance features on different scale spaces and different image regions are extracted and transformed into sigma features,then combined with central position feature, the local salient map is generated. Next, a global salient map is generated by gray contrast and density estimation. Finally, the saliency detection result of infrared images is obtained by fusing the local and global salient maps. The experimental results show that the salient map of the proposed method has complete target features and obvious edges,and the proposed method is better than the state of art method both qualitatively and quantitatively.

关键词： saliency detection region covariance gray contrast density estimation

Automatic radar antenna scan type recognition based on limited penetrable visibility graph

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Journal of Systems Engineering and Electronics 2021年第2期32卷 437-446页

作者： liu songtao LEI Zhenshuo GE Yang WEN Zhenming Department of Information System Dalian Naval AcademyDalian 116018China

To address the problem of the weak anti-noise and macro-trend extraction abilities of the current methods for identifying radar antenna scan type,a recognition method for radar antenna scan types based on limited penetrable visibility graph(LPVG)is proposed.Firstly,seven types of radar antenna scans are analyzed,which include the circular scan,sector scan,helical scan,raster scan,conical scan,electromechanical hybrid scan and two-dimensional electronic scan.Then,the time series of the pulse amplitude in the radar reconnaissance receiver is converted into an LPVG network,and the feature parameters are extracted.Finally,the recognition result is obtained by using a support vector machine(SVM)classifier.The experimental results show that the recognition accuracy and noise resistance of this new method are improved,where the average recognition accuracy for radar antenna type is at least 90%when the signalto-noise ratio(SNR)is 5 dB and above.

关键词： antenna scan type limited penetrable visibility graph(LPVG) support vector machine(SVM) cognitive electronic warfare

党的十八大以来中国式现代化研究的述评与展望

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西南民族大学学报（人文社会科学版） 2024年第2期45卷 213-220页

作者：薛小平刘松涛西南民族大学马克思主义学院四川成都610041

党的十八大以来,中国共产党在已有基础上成功推进和拓展了中国式现代化,在实现中华民族伟大复兴中创造人类文明新形态,这引发了学界广泛的研究。学界历经零星分散、系统专门、集成创新的研究阶段,从不同层面研究了中国式现代化的生成条... 详细信息

党的十八大以来,中国共产党在已有基础上成功推进和拓展了中国式现代化,在实现中华民族伟大复兴中创造人类文明新形态,这引发了学界广泛的研究。学界历经零星分散、系统专门、集成创新的研究阶段,从不同层面研究了中国式现代化的生成条件与出场逻辑、科学内涵与主要特征、历史演进与基本经验、现实境况与推进路径、重大意义与文明价值,所取得的丰硕成果阐释了中国式现代化的基本问题,丰富了中国式现代化的知识体系,揭示了中国式现代化的时代价值,但也存在一定不足。后续研究应致力于丰富研究对象类别、拓展研究视野及思路、推动跨学科交叉研究、注重运用实证经验研究方法、深化大众传播研究,以促进中国式现代化研究高质量发展。

关键词：中国共产党中国式现代化强国建设民族复兴人类文明新形态

作为新质生产力的技术创新驱动:AI2.0时代有声出版产业链建设现状、挑战及对策

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出版发行研究 2024年第6期 46-53,30页

作者：程辉刘松弢李武上海家瑶网络科技有限公司人民出版社办公室上海交通大学媒体与传播学院

在AI2.0时代,由于新一代基础设施的发展完善及相关技术群落的应用渗透,以技术创新为核心驱动的新质生产力正在形成,有望成为产业数智化转型升级和高质量发展新动能,引发有声出版产业变革。文章以此为研究背景,就AI2.0时代技术创新驱动... 详细信息

在AI2.0时代,由于新一代基础设施的发展完善及相关技术群落的应用渗透,以技术创新为核心驱动的新质生产力正在形成,有望成为产业数智化转型升级和高质量发展新动能,引发有声出版产业变革。文章以此为研究背景,就AI2.0时代技术创新驱动下有声出版产业链上、中、下游建设现状进行客观分析,并提出针对性建议,以期在技术赋能有声出版产业链建设提质增效的同时,确保技术合理、规范应用,为行业高质量发展和全产业链优化升级提供有益启示。

关键词： AI2.0 新质生产力有声出版产业链

论沿海国在争议专属经济区内对外国船舶污染的管辖权

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国际法研究 2024年第3期 31-49页

作者：张亮刘松涛中山大学法学院南方海洋科学与工程广东省实验室(珠海) 中山大学涉外法治研究院

《联合国海洋法公约》明确赋予沿海国在专属经济区内对外国船舶污染享有管辖权。在争议专属经济区内,不同声索国均享有对外国船舶污染的管辖权,船旗国享有航行权,进而产生了两组权利冲突。第一组权利冲突是声索国之间管辖权的冲突;第二... 详细信息

《联合国海洋法公约》明确赋予沿海国在专属经济区内对外国船舶污染享有管辖权。在争议专属经济区内,不同声索国均享有对外国船舶污染的管辖权,船旗国享有航行权,进而产生了两组权利冲突。第一组权利冲突是声索国之间管辖权的冲突;第二组权利冲突是沿海国管辖权与船旗国航行权的冲突。针对声索国之间的权利冲突,声索国应履行合作义务和相互克制义务,不得实施影响最终海洋划界的行为。针对沿海国和船旗国之间的权利冲突,沿海国应履行适当顾及义务,尊重船旗国在争议专属经济区内的航行权。面对争议专属经济区内的法律冲突,中国可基于不同身份采取相应策略。作为航运大国,中国可通过国际海事组织积极参与国际航行规则的制定,保障中国船舶在他国专属经济区内的航行权;作为沿海国家,中国可在船舶污染防治方面加强与周边邻国合作,建立防治船舶污染合作机制。

关键词：争议专属经济区保护和保全海洋环境船舶污染管辖权适当顾及义务

Automatic detection of oceanic eddies in reanalyzed SST images and its application in the East China Sea

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Science China Earth Sciences 2015年第12期58卷 2249-2259页

作者： ZHANG ChunHua LI HongLin liu songtao SHAO LianJun ZHAO Zhao liu HongWei Beijing China

Oceanic eddies may cause local sea surface temperature(SST), height, and salinity anomalies in remote sensing(RS) images. Remote sensed SST imagery has proven to be an effective technique in oceanic eddy detection, because of its high temporal and spatial resolution. Various techniques have been used to identify eddies from SST images. However, mainly owing to the strong morphological variation of oceanic eddies, there is arguably no uniquely correct eddy detection method. A scheme of algorithm based on quasi-contour tracing and clustering of eddy detection from SST dataset is presented. The method does not impose fixed restrictions or limitations during the course of "suspected" eddy detection, and any eddy-like structures can be detected as "suspected" eddies. Then, "true" eddies can be identified based on the combination of intensity and spatial/temporal scale criteria. This approach has been applied to detect eddies in the East China Sea by using Operational SST & Sea Ice Analysis(OSTIA) dataset. Experiments proved that oceanic eddies ranging in diameter from tens to hundreds of kilometers can be detected. Through investigation of the 2007–2011 OSTIA daily SST dataset from the Kuroshio region in the East China Sea, we found that the most active regions for oceanic eddies are those along the Kuroshio path, northeast of Taiwan Island, the Yangtze Estuary and the Ryukyu Islands. About 86% of the cyclonic eddies and 87% of the anticyclonic eddies have the size of 50–100 km in diameter. Only 25% of the anticyclonic eddy and 26% of the cyclonic eddy have the strength more than 0.4°C in the sea surface layer.

关键词：海洋涡旋遥感图像自动检测东中国海 SST 应用涡流检测东海黑潮区

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TAVI术后血小板减少相关机制研究进展

中华心血管病杂志 2024年第2期52卷 205-209页

作者：刘松涛刘员员黄笑邵靓蔡新勇洪浪江西省人民医院心血管内科南昌330006

血小板减少症(TP)是经导管主动脉瓣植入术(TAVI)后一种常见的并发症,但其发病机制目前仍未明确。TAVI术后严重TP与不良事件相关。此外,血小板聚集及凝血系统的激活使得TAVI术后需进行抗血栓治疗。因此,研究TAVI后TP的病理机制十分重要... 详细信息

血小板减少症(TP)是经导管主动脉瓣植入术(TAVI)后一种常见的并发症,但其发病机制目前仍未明确。TAVI术后严重TP与不良事件相关。此外,血小板聚集及凝血系统的激活使得TAVI术后需进行抗血栓治疗。因此,研究TAVI后TP的病理机制十分重要。TP的发生主要与血小板生成不足及血小板活化、消耗和破坏相关。该文就TAVI术后TP发生的相关机制和临床研究进行综述。

关键词：血小板减少经导管主动脉瓣植入术

A mesoscale eddy detection method of specific intensity and scale from SSH image in the South China Sea and the Northwest Pacific

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Science China Earth Sciences 2014年第8期57卷 1897-1906页

作者： ZHANG ChunHua XI XiaoLiang liu songtao SHAO LianJun HU XiaoHua No. 107 Beiqing Road Haidian District The 7th Department Navy Aeronautical Engineering University

Mesoscale eddies exist almost everywhere in the ocean and play important roles in the ocean circulation of the world. These eddies may cause sound spread singular regions and bring great influences to the upwater ship and underwater aircraft. Due to the lack of hydrographic survey datasets, study of mesoscale eddies has been greatly restricted. Fortunately, satellite altimeter provided an effective way to study mesoscale eddies. An automatic detection algorithm is introduced to detect mesoscale eddies of specific intensity and spatial/temporal scale based on satellite sea surface height(SSH) data and the algorithm is applied in a strong eddy activity region: the South China Sea and the Northwest Pacific. The algorithm includes four steps. The first step is preprocessing of the SSH image, which includes elimination of error SSH data and interpolation. The second step is to detect suspected mesoscale eddies from preprocessed SSH images by dynamic threshold adjustment and morphological method, and the suspected mesoscale eddy detection includes two procedures: suspected mesoscale eddy core region detection and suspected mesoscale eddy brim extraction. The third step is to pick out mesoscale eddies satisfied with specified criteria from suspected mesoscale eddies. The criteria include three items, that is, intensity criterion, spatial scale, criterion and temporal scale criterion. The last step is algorithm performance analysis and verification. The algorithm has the capability of adaptive parameter adjustment, and can extract mesoscale eddies of interested intensity and spatial/temporal scale. The paper can provide a basis for analyzing space-time characteristics of mesoscale eddy in the South China Sea and the Northwest Pacific.

关键词：自动检测算法中尺度涡旋西北太平洋中国南海 SSH 强度涡流检测形象

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基于鱼类上溯行为的导鱼堰设计与效果评估

农业工程学报 2024年第7期40卷 117-123页

作者：李广宁柳松涛柳海涛郑铁刚石凯孙双科刘珺中国水利水电科学研究院流域水循环模拟与调控国家重点实验室北京100038 天津大学建筑工程学院天津300072

河道内鱼类上溯路径不唯一,聚集位置更是难以预测,对鱼类上溯行为进行有效引导有助于提升过鱼设施进口的效率。为此,该研究提出了一种导鱼堰的概念和设计方法,结合姚家坪水电站的过鱼设施,利用流场三维数值模拟、鱼类洄游(active fish m... 详细信息

河道内鱼类上溯路径不唯一,聚集位置更是难以预测,对鱼类上溯行为进行有效引导有助于提升过鱼设施进口的效率。为此,该研究提出了一种导鱼堰的概念和设计方法,结合姚家坪水电站的过鱼设施,利用流场三维数值模拟、鱼类洄游(active fish migration,AFM)模型和实鱼试验对导鱼堰的效果进行评估。结果表明:姚家平水利枢纽工程的导鱼堰上下游水面落差为0.36~0.40 m,过堰水流流速可达1.5~2.8 m/s,形成阻鱼的屏障,并在导鱼堰下游侧形成了诱导鱼类向集鱼渠进鱼口游动的唯一低流速上溯通道,鱼类聚集点趋于唯一,验证了导鱼堰方案的合理性。利用鱼类洄游模型对导鱼堰的导鱼效果进行预测,结果表明,下游高水位和低水位2种工况下,90%以上的鱼类游动路径均表现出相似的规律,鱼类沿河道右岸和导鱼堰下游侧的低流速通道上溯,并最终聚集在集鱼渠的进鱼口处。放鱼试验中试验个体全部进入集鱼渠,结果进一步证实导鱼堰可以有效引导鱼类游动路线,并在集鱼渠进鱼口处形成唯一的聚集区。本文提出的导鱼堰丰富了生态水工建筑物的形式,可为过鱼设施进口的水力设计及下游河道的局部整治提供参考。

关键词：渔业数值模拟过鱼设施导鱼堰鱼类洄游模型实鱼试验