Facing the drawback existing in the Stand-alone image processing software,the article proposes a web-based online image processing software architecture,and make use of the advanced image processing technology of java...
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Facing the drawback existing in the Stand-alone image processing software,the article proposes a web-based online image processing software architecture,and make use of the advanced image processing technology of java applet and JAI to *** introducing and analysis the programming development method of JAI advanced image processing technology and applet plug-in implementation *** the same time,combining the actual research work,Appling the system to the low-resolution remote sensing image distributed processing system,Application results show that the system has a feature of good Practicality,multi-platform and security,which can fit different needs of distributed image process.
Medical services in current-time rely heavily on digital imaging technology due to image modalities utilized in medical field such as the computer tomography and magnetic resonance imaging. These techniques require im...
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ISBN:
(纸本)9780909925802
Medical services in current-time rely heavily on digital imaging technology due to image modalities utilized in medical field such as the computer tomography and magnetic resonance imaging. These techniques require image-processing tools and digital management that has been the primary reason for development of Picture Archiving and Communication Systems (PACS). The limitation to PACS is that the system architecture limits itself to be only used in the local area network, which at times causes inconvenience towards physicians requiring the system in the outside *** the rapid advances in the network speed, computer processing capabilities, and the support for online software development, the potential to bridge the gap between the hospital and outside environment to share and work in conjunction may be *** this paper, we present an application of database and functional imaging that runs through the Internet network (WWW) and Internet browser that has similar ability to the PACS yet having the advantages of being an online system.
Web-GIS是当前GIS发展中的一个热点,它是利用互联网技术来扩展和完善地理信息系统的一项新技术,其核心是在地理信息系统中嵌入HTTP和TCP/IP标准的应用体系,实现互联网环境下的空间信息管理等地理信息系统功能。
本文从Internet对GIS的影响出发,首先介绍了Web-GIS的概念,基本原理,然后较为详细地论述了Web-GIS系统开发的各种新兴技术,如java applet、Servlet、JSP等技术,并着重介绍了MapXtreme for java平台的技术结构特点。
文中提出了基于Web-GIS系统的关键技术——最短路径搜索算法。针对路径规划问题,在分析经典Dijkstra最短路径算法的基础上,通过应用二叉堆和邻接表数据结构对算法进行改进,又进一步根据道路网的空间分布特征,引入动态规划原理和限制方向搜索策略,从而减小算法规模,提高算法运行效率。
文章最后介绍了以MapXtreme for java为平台,以JBuilder为开发工具,以西安电子地图为数据,开发的一个客户端应用程序—CE-WebGIS1.0。该应用程序是以java applet为核心技术,结合MapXtreme for java平台提供的API,来实现电子地图的网上发布。
虚拟实验室随着计算机技术的高速发展而发展。以前,虚拟实验室的发布,通常是以随书光盘的方式,而现在是采用网络,特别是因特网(Internet),一种全新的方式。这种方式具有信息传递的快速性,无时间地点限制(At Any Time and Any Pla...
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虚拟实验室随着计算机技术的高速发展而发展。以前,虚拟实验室的发布,通常是以随书光盘的方式,而现在是采用网络,特别是因特网(Internet),一种全新的方式。这种方式具有信息传递的快速性,无时间地点限制(At Any Time and Any Place)、丰富的友好图形操作见面(GUI)等优点,这些是目前其它任何方式所无法比拟的。利用计算机网络技术作为它新的传播实现工具,大大方便了用户。虚拟实验室的应用必将广泛的流行起来。
本文研究了控制系统网络虚拟实验室的设计与实现问题。取得了以下主要研究结果:
1.提出了虚拟实验室结构—一个基于浏览器—Web服务器(B/S,Browser/Server)和客户/服务器(C/S,Client/Server)相合并的全新结构。
2.基于B—S结构的虚拟实验室网站设计与实现。
3.基于C—S结构的客户端程序和服务器程序的设计与实现。
4.计算机仿真软件—Matlab/Simulink中的模型文件及相关算法的设计与实现。
5.两个实例的具体实现。
本文还简略介绍了构建控制系统网络虚拟实验室所用到的相关技术。这些技术包括了网页设计技术、java程序设计语言、数据库接口、网络原理及Matlab/Simulink等。
最后对全文的工作进行了总结,对网络虚拟实验室的进一步的发展与研究方向作了展望。
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