Integration of 3D and multispectral data for cultural heritage applications: Survey and perspectives

Cultural heritage is increasingly put through imaging systems such as multispectral cameras and 3D scanners. Though these acquisition systems are often used independently, they collect complementary information (spectral vs. spatial) used for the study, archiving and visualization of cultural heritage. Recording 3D and multispectral data in a single coordinate system enhances the potential insights in data analysis.     

浅析我国原料药出口欧盟的相关认证

详细描述了中国制药企业原料药出口欧洲时药品注册所应具备的基本条件,明确说明了原料药申请EDMF文件／COS证书认证所需要的文件、文件的格式以及认证的详细程序,并且对药品注册所使用的CTD格式文件作了明确的说明,目的在于使中国原料药出口企业对于欧盟认证有所了解,明确认识欧盟注册认证的程序与所需的文件等。     

信息名址注册系统技术探讨

信息名址注册系统是信息名址业务开展的前提条件,通过信息名址注册系统,客户可以注册信息名址,从而享受信息名址带来的方便的服务。本文介绍了信息名址注册系统的主要工作流程和基本规范。     

An Automated Inspection System

An automated inspection system for manufactured parts is proposed using a cloud of 3D measured points of a part provided by a range sensor, and its CAD model. In spite of the high precision attained by coordinate measuring machines (CMM), range sensors offer significant advantages for dimensional inspection: a high speed of digitisation and the capacity to take 3D measurements on the whole surfaces of a part without physical contact. The system first registers a cloud of 3D points with a CAD model of the part, then segments the 3D points in different surfaces by using the CAD model, and finally measures the control of the specified tolerances on the part. Results of the inspection are displayed in two ways: visually, using a colour map to display the level of discrepancy between the measured points and the CAD model, and a hardcopy report of the evaluation results of the tolerance specifications. Two range sensor technologies have been tested and inspection results are compared with the results obtained with a CMM.     

几何失真景像边缘距离变换匹配的定位精度研究

本文首先建立摄像机高度和姿态发生增量变化时景像几何失真的理论模型，然后对边缘距离变换匹配方法的匹配精度进行了理论分析，导出了边缘距离变换匹配定位精度的解析表达式。     

Robust similarity registration technique for volumetric shapes represented by characteristic functions

This paper proposes a novel similarity registration technique for volumetric shapes implicitly represented by characteristic functions (CFs). Here, the calculation of rotation parameters is considered as a spherical cross-correlation problem and the solution is therefore found using the standard phase correlation technique facilitated by principal components analysis (PCA). Thus, fast Fourier transform (FFT) is employed to vastly improve efficiency and robustness. Geometric moments are then used for shape scale estimation which is independent from rotation and translation parameters. It is numerically demonstrated that our registration method is able to handle shapes with various topologies and robust to noise and initial poses. Further validation of our method is performed by registering a lung database.     

Proof of certificateless MIP registration protocol based on PCL

Security protocols are the basis of many mobile communication systems, thus it is important to ensure protocol property correct. Using Protocol Composition Logic (PCL), this paper proves a Mobile IP (MIP) registration protocol that is based on certificateless public key signature without pairing between home agent and foreign agent, which minimizes the registration time and cost as well as improves the security compared with the identity-based and certificate-based registration protocol. Analysis and proof shows that the proposed protocol provides users security and authentications, moreover, the anonymity property is proved correct.     

An algorithm for optimal free-form object matching

A novel method of matching for 3-D free-form objects (points vs. surface and surface vs. surface) is proposed. The method formulates the problem in terms of solution of a non-linear polynomial equation system, which can be solved robustly by the Interval Projected Polyhedron (IPP) algorithm. Two intrinsic surface properties, the Gaussian and the mean curvatures, are used as object features for matching. The related iso-curvature lines are used to establish the correspondence between two objects. The intersection points of these iso-curvature lines are calculated and sorted out to satisfy the Euclidean constraints from which the translation and rotation transformations are estimated. The performance of the proposed algorithm is also analyzed. This approach can cover global and partial matching, and be applied to automated inspection, copyright protection of NURBS models, and object recognition. Examples illustrate our technique.     

图像配准在计算机辅助全膝置换手术中的应用

介绍了计算机辅助全膝置换手术中图像配准方法。通过初步试验，证明该方法切实可行。     

面向Data-Path布图应用的注册式GUI设计

提出了一种基于工作站、UNIX操作系统,采用C++语言、Tcl/Tk语言及Gu库实现图形用户界面(GUI)的新方法。文章重点介绍了所采用的注册机制。与其他的设计方法相比,该GUI的设计具有良好的适用性和可维护性;同时,又有易实现性,省去了设计者了解底层布图算法内容的繁琐过程。测试结果表明该GUI实现了预期的功能。目前,该GUI已应用到在研的Data-Path布图项目之中。