Energy-Based Image Deformation

We present a general approach to shape deformation based on energy minimization, and applications of this approach to the problems of image resizing and 2D shape deformation. Our deformation energy generalizes that found in the prior art, while still admitting an efficient algorithm for its optimization. The key advantage of our energy function is the flexibility with which the set of "legal transformations" may be expressed; these transformations are the ones which are not considered to be distorting. This flexibility allows us to pose the problems of image resizing and 2D shape deformation in a natural way and generate minimally distorted results. It also allows us to strongly reduce undesirable foldovers or self-intersections. Results of both algorithms demonstrate the effectiveness of our approach.     

PACS设计与实现中的几个关键问题

医学图像归档及通信系统（PACS）的设计与实现是医学图像处理领域的研究热点,同时对医院构建放射学信息系统、医院信息系统有着重要意义。结合开发图像归档服务器的经验,分析和探讨了PACS设计和实现中的几个关键问题,比如PACS的功能选择、PACS底层通信协议的选择、数据库的管理、图像存储媒体的选择、图像诊断工作站的选择、支持远程医疗的WEB数据发布策略等等。最后,阐述了一个新构建的小型PACS的机构和主要技术。     

Enhancing Scatterplots with Multi‐Dimensional Focal Blur

Scatterplots directly depict two dimensions of multi‐dimensional data points, discarding all other information. To visualize all data, these plots are extended to scatterplot matrices, which distribute the information of each data point over many plots. Problems arising from the resulting visual complexity are nowadays alleviated by concepts like filtering and focus and context. We present a method based on depth of field that contains both aspects and injects information from all dimensions into each scatterplot. Our approach is a natural generalization of the commonly known focus effects from optics. It is based on a multidimensional focus selection body. Points outside of this body are defocused depending on their distance. Our method allows for a continuous transition from data points in focus, over regions of blurry points providing contextual information, to visually filtered data. Our algorithm supports different focus selection bodies, blur kernels, and point shapes. We present an optimized GPU‐based implementation for interactive exploration and show the usefulness of our approach on several data sets.     

基于多尺度DEM的雷达仿真图像生成

为了改进目前应用于雷达仿真图像生成的数字高程模型DEM(Digital Elevation Model)中存在的不足,引入"不规则地形起伏参数"来动态调整生成DEM的采样间隔和密度,并根据导航雷达的方位和距离分辨能力,建立了基于多尺度DEM雷达仿真图像生成方法.应用结果表明,该方法对量程范围内、外的地形模型数据采用了不同的分辨率,所生成的仿真图像近处细节逼真,远处显示地形轮廓,大大提高了各种量程下的雷达图像生成速度,该成果已经应用于雷达模拟器的研制中.     

数字博物馆应用研究

本文参考借鉴了国内外一些著名博物馆智能化和信息化系统所采用的技术,从应用研究的角度出发,论述数字博物馆的体系结构和元数据组织方案,以及数字博物馆应用开发中的某些关键技术,立足构建数字博物馆开发环境,形成商品化的数字博物馆软件产品。研究成果已经成功应用于上海博物馆、上海市文物管理委员会信息化建设中,通过研究成果的进一步产业化,可应用于全国3000多文博单位,以期为中国乃至国际的数字博物馆工程建设提供有益的帮助。     

基于TCP/IP的DICOM网络通讯模型实现

DICOM标准是现代医学图像存储与传输系统(PACS)的核心,由于大多数PACS系统是建立在TCP/IP协议之上的,因此实现基于TCP/IP的DICOM网络通讯十分重要。该文通过对DICOM标准的理解和分析,采用C++语言分三个步骤实现目标:TCP/IP接口交互功能的实现、DICOM上层协议的实现、DICOM消息交换的实现。并以存储消息服务为例实现基于TCP/IP的DICOM网络通讯模型。     

The effect of picture attributes of online ordering pages on visual attention and user experience

The popularity of online ordering services is increasing daily, with food pictures playing a critical role in influencing user attention and experience. In this study, 58 participants were enrolled in a 2 (saturation: higher vs. lower) × 3 (Area of interest: category vs. picture vs. text) within-subject experiment using large and small pictures to evaluate the impact of picture attributes on user responses. A combination of eye-tracking technology and a questionnaire survey was used for the measurement. The results suggest that for larger food pictures, the picture area received more attention than the category and text areas when pictures were highly saturated, whereas the category information was more appealing than other areas when pictures were low saturated, and the user experience of the overall page was higher than in other cases. For smaller food pictures, the picture area attracted initial attention, whereas the text area gained more fixation than the other areas. The findings of this study provide empirical suggestions for designing online interfaces for ordering services and webpages.     

纸盒包装的地位及其发展趋势

详细阐述了纸盒的包装功能及其在物资流通中的地位，进一步展望了纸盒包装的发展趋势。