基于体积图像数据剖面密度自动搜索路线的主动漫游

  总被引：3，自引：0，他引：3

本文给出了由体积图像数据的剖面密度自动搜索主动漫游路线的一种方法,并应用于医学体积图像数据中管状结构的主动漫游,该方法直接利用体积数据信息,处理速度快,部分实际数据的实验表明,这是实现实时局部路径搜索的有效方法。  相似文献

於文雪  罗立民  舒华忠  René Collorec 《电子学报》1999,27(12):9-11

An Interactive System SDI on Microcomputer

  

SDI is an interactive system,based on PASCAL,for Symbolic Differentiation and Integrationcompulation.It runs on an IBM-PC.Both input and out… …   相似文献

Zhong Renbao  Xing Lin  Ren Zhaoyang 《计算机科学技术学报》1987,2(1):64-71

对比源反演算法对二维混合目标重建成像的应用

  

针对线性成像精确性有限的缺点,提出了在非线性算法—对比源反演算法中采用正则化和并行频率方重建在暗室内的金属和电介质柱体构成的混合目标。二维实测微波散射数据采用了多频率、多收发设置的测量方式。通过目标的位置、形状及对比度值得展示,验证了扩展后的对比源反演算法对复杂的二维混合目标重建… …   相似文献

王学静  缪竟鸿  René Marklein 《计算机应用》2012,32(4):1184-1187

HAPS: Supporting Effective and Efficient Full-Text P2P Search with Peer Dynamics

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Recently, peer-to-peer (P2P) search technique has become popular in the Web as an alternative to centralized search due to its high scalability and low deployment-cost. However, P2P search systems are known to suffer from the problem of peer dynamics, such as frequent node join/leave and document changes, which cause serious performance degradation. This paper presents the architecture of a P2P search system that supports full-text search in an overlay network with peer dynamics. This architecture, namely HAPS, consists of two layers of peers. The upper layer is a DHT (distributed hash table) network interconnected by some super peers (which we refer to as hubs). Each hub maintains distributed data structures called search directories, which could be used to guide the query and to control the search cost. The bottom layer consists of clusters of ordinary peers (called providers), which can receive queries and return relevant results. Extensive experimental results indicate that HAPS can perform searches effectively and efficiently. In addition, the performance comparison illustrates that HAPS outperforms a flat structured system and a hierarchical unstructured system in the environment with peer dynamics.… …   相似文献

Zu-Jie Ren 《计算机科学技术学报》2010,25(3):482-498

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API (application programming interface) documentation is critical for developers to learn APIs. However, it is unclear whether API documenta… …   相似文献

Yi-Xuan Tang  Zhi-Lei Ren  He Jiang  Xiao-Chen Li  Wei-Qiang Kong 《计算机科学技术学报》2021,36(4):856-876

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How to combine color and multiscale information is a fundamental question for computer vision, and quite a few color diffusion techniques ha… …   相似文献

Zhong-Xuan Liu  Shi-Guo Lian    Zhen Ren 《计算机科学技术学报》2006,21(1):126-136

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Internet users heavily rely on web search engines for their intended information.The major revenue of search engines is advertisements (or a… …   相似文献

Dong-Hui Yang  Zhen-Yu Li  Xiao-Hui Wang  Kavé Salamatian  Gao-Gang Xie 《计算机科学技术学报》2021,36(5):1167-1183

Effcient Handling of Lock Hand-off in DSM Multiprocessors with Buffering Coherence Controllers

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Synchronization in parallel programs is a major performance bottleneck in multiprocessor systems. Shared data is protected by locks and a lo… …   相似文献

Benjamín Sahelices  Agustín de Dios  Pablo Ibáez  Víctor Vials-Yúfera  José María Llabería 《计算机科学技术学报》2012,27(1):75-91

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Massive ocean data acquired by various observing platforms and sensors poses new challenges to data mana-gement and utilization.Typically,it… …   相似文献

Xiao-Li Ren  Kai-Jun Ren  Zi-Chen Xu  Xiao-Yong Li  Ao-Long Zhou  Jun-Qiang Song  Ke-Feng Deng 《计算机科学技术学报》2021,36(5):963-984

基于模糊逻辑的多相机非重叠场景的物体匹配

  

An approach based on fuzzy logic for matching both articulated and non-articulated objects across multiple non-overlapping field of views (F… …   相似文献

LOKE Yuan Ren  KUMAR Pankaj  黄为民 《自动化学报》2006,32(6):978-987