电子SMT虚拟制造培训系统的研究

本文论述先进SMT虚拟制造技术,研发出先进电子SMT教学培训系统,在电子SMT设计和制造"孤岛"间建立联系,将PCB设计、SMT生产线工艺设计、关健SMT设备编程、加工过程可视化仿真和可制造性评价系统集成,在计算机上以直观、生动、精确的方式模拟出先进电子SMT制造技术。     

GIS可视化技术在MIS中的应用研究

基于对地理信息系统和管理信息系统两大核心技术的不断掌握和完善,将二者融会贯通构建城市综合信息平台已成为城市信息化建设发展的必然趋势。文章从GIS可视化技术的特征分析人手,以广电GIS—MIS系统和GeoWindows系统的结构、空间数据处理、数据库的构建以及在广播电影电视信息的采集查询、统计等方面的功能实现为例,介绍了GIS可视化技术在管理信息系统界面开发中的关键技术,并给出了相应的建设性结果,最后展示了GIS可视化技术在管理信息系统中的应用前景。     

利用OpenGL技术实现的卫星轨道可视化

论述了在Windows平台下使用Visual C 和OpenGL图形库,实现卫星轨道数据的三维可视化显示的疗法,并且介绍了实现卫星轨道可视化的几个关键技术。     

城市三维景观可视化研究与应用

概述了城市三维景观可视化的过程及关键技术,给出了一个基于两种流行3D API的系统框架,讨论了基于网络的城市三维景观发布技术,并提供了一个城市三维景观实例系统M3DView。     

基于数据库和可视化技术的翅片管换热器仿真

构建了翅片管换热器的性能仿真系统的整体框架，通过引入数据库技术和可视化技术，结合换热器分布参数仿真模型，实现了该仿真系统。该系统具有分工明晰的输入、仿真和输出模块，能方便用户输入仿真参数，准确快捷地对翅片管换热器性能进行仿真，并以各种形象直观的方式输出仿真结果。     

平行坐标及其在聚类分析中的应用

平行坐标对多维数据的表达是数据可视化的重要方法之一。它实现了多维数据在二维平面上的表示。利用平行坐标对数据进行分析处理的技术已经取得了很大的进展,如刷(Brushing)技术、交换坐标轴、抽象等。这些分析技术已经应用到数据挖掘的很多领域,尤其在聚类分析中,平行坐标对数据集的定性分析使聚类结果的合理性得到证明。     

Visualizing Waypoints‐Constrained Origin‐Destination Patterns for Massive Transportation Data

Origin‐destination (OD) pattern is a highly useful means for transportation research since it summarizes urban dynamics and human mobility. However, existing visual analytics are insufficient for certain OD analytical tasks needed in transport research. For example, transport researchers are interested in path‐related movements across congested roads, besides global patterns over the entire domain. Driven by this need, we propose waypoints‐constrained OD visual analytics, a new approach for exploring path‐related OD patterns in an urban transportation network. First, we use hashing‐based query to support interactive filtering of trajectories through user‐specified waypoints. Second, we elaborate a set of design principles and rules, and derive a novel unified visual representation called the waypoints‐constrained OD view by carefully considering the OD flow presentation, the temporal variation, spatial layout and user interaction. Finally, we demonstrate the effectiveness of our interface with two case studies and expert interviews with five transportation experts.     

Multi-view visualizations for emergency communities of volunteers

Information and communication technologies might empower emergency communities of volunteers by assisting community participation and improving their capacity to respond to unexpected events. However, designing technology for such purpose places unique visualization challenges that go beyond the current state of research on public participation tools and related technologies. Empowering these communities requires developing representations that enable collaborative reflection, promote mutual visibility of volunteers’ efforts and sustain a shared view of the community. Similarly, it is necessary to envision visualizations that facilitate sense making of large, simultaneous and distributed pieces of heterogeneous information with different levels of credibility and priority. Accordingly, this paper identifies and characterizes these challenges to propose a multi-view and multi-abstraction-level visualization approach for emergency communities of volunteers. In particular, it combines time-oriented visualizations, space-filling visualization techniques, interaction mechanisms and coordinated maps to support community participation as well as collaborative and individual sense making. The application of these visualization techniques is discussed through the development of a set of design prototypes.     

xOpat: eXplainable Open Pathology Analysis Tool

Histopathology research quickly evolves thanks to advances in whole slide imaging (WSI) and artificial intelligence (AI). However, existing WSI viewers are tailored either for clinical or research environments, but none suits both. This hinders the adoption of new methods and communication between the researchers and clinicians. The paper presents xOpat, an open-source, browser-based WSI viewer that addresses these problems. xOpat supports various data sources, such as tissue images, pathologists' annotations, or additional data produced by AI models. Furthermore, it provides efficient rendering of multiple data layers, their visual representations, and tools for annotating and presenting findings. Thanks to its modular, protocol-agnostic, and extensible architecture, xOpat can be easily integrated into different environments and thus helps to bridge the gap between research and clinical practice. To demonstrate the utility of xOpat, we present three case studies, one conducted with a developer of AI algorithms for image segmentation and two with a research pathologist.     

三维医学可视化分析平台的研究

本文介绍西北大学可视化研究所研制的三维医学可视化分析系统。该系统可用于医学影像数据库、手术计划系统、远程会诊系统和计算机医学辅助教学系统的开发平台,为医学图像可视化提供了有力的工具。