搜索结果: 1-15 共查到“知识库 工程图学”相关记录94条 . 查询时间(0.35 秒)
基于条状碎纸片自动拼接
碎纸片拼接 相关性 向量余弦值
2014/6/19
采用相似度匹配的方法，对凌乱次序的条状碎纸片进行拼接。根据每张条状碎纸图像的左、右边列处的信息，计算它与其他条状碎纸图像的左、右边列的相关性即向量余弦值，向量值越接近1，与其他图像左、右列越匹配，然后根据最大相关性的原则，将各个条状碎纸拼接在一起，得到的图像就是要恢复的原始文本信息。通过MALAB编程实现算法，并通过初步实例验证了算法的有效性。
现代CAD技术发展与工程图学深入改革
工程图学 CAD技术 三维实体造型 课程改革
2009/10/20
现代CAD技术的发展极大地促进了工程设计理念和方式的变革,决定着工程图学课程深入改革的任务和方向。三维设计理念是工程图学面临的新课题,在图学教育中引入三维实体造型理论和技术,使教学过程与工程应用相联系,是推进工程图学课程深入改革的必然趋势。
“三江项目”制图方法探讨
三江项目 制图程序 专题制图 MAPGIS
2009/9/29
“三江并流带旅游地质资源开发与环境保护”项目(三江项目)将旅游学与地质学相结合,探索三江地区旅游地质资源开发与保护问题,项目制图工作量大,要求高. 论文系统总结项目制图工作,对制图方法进行探讨. 研究认为三江项目图件主要由插图、图版和专题图组成,插图、图版借助word,excel,photoshop等常用软件制作完成; 专题图为项目制图工作中的重点和特色,主要以MAPGIS为基础平台制作完成,论文...
Space Deformation of Parametric Surface Based on Extension Function
parametric surface space or free-form deformation extension function
2009/8/19
In this paper, a new technique of space deformation for parametric surfaces with so-called extension function (EF) is presented. Firstly, a special extension function is introduced. Then an operator m...
Automatic Conversion of Triangular Meshes Into Quadrilateral Meshes with Directionality
quadrilateral mesh triangular mesh conversion directionality
2009/8/19
This paper presents a triangular-to-quadrilateral mesh conversion method that can control the directionality of the output quadrilateral mesh according to a user-specified vector field. Given a triang...
Specification of VRML in Color Rapid Prototyping
VRML Color data interface Rapid Prototyping
2009/8/19
The STL or Stereolithography format, established by 3D systems, gathers the geometric data of the model in anumber of triangular surfaces. It can be in ASCII or binary format, and is a de facto standa...
An Intelligent Cavity Layout Design System for Injection Moulds
Intelligent design cavity layout design injection mould design case-based reasoning
2009/8/19
This paper presents the development of an Intelligent Cavity Layout Design System (ICLDS) for multiple cavity injection moulds. The system is intended to assist mould designers in cavity layout design...
Bridging the gap between CAD and CAE using STL files
data exchange mesh geometry processing CAD/CAE solid construction STL
2009/8/19
In many areas of industry, it is desirable to have fast and reliable systems in order to quickly obtain suitable solid models for computer- aided analyses. Nevertheless it is well known that the data...
Unifying Method for Computing the Circumcircles of Three Circles
Apollonius’ 10th Problem circumcircle inversion Mö bius transformation
2009/8/19
Given a set of three generator circles in a plane, we want to find a circumcircle of these generators. This problem is a part of well-known Apollonius’ 10th Problem and is frequently encountered in va...
An Integrated Simulation Method to Support Virtual Factory Engineering
Virtual factory Static simulation Dynamic simulation Virtual reality
2009/8/19
This paper presents a structure and architecture of an integrated simulation method (ISM) to meet the requirements of virtual factory engineering (VFE). Combining CAD, VR and discrete event simulation...
De-manufacturing is an entire process of collecting, disassembling, reusing, refurbishing, recycling, and/or disposing products that are obsolete or un-repairable. Designing the products for inexpensi...
A Sweep-Line Algorithm and Its Application to Spiral Pocketing
Monotone chain sweep-line self-intersection spiral pocketing line-offset
2009/8/19
This paper presents an efficient line-offset algorithm for general polygonal shapes with islands. A developed sweeplinealgorithm (SL) is introduced to find all self-intersection points accurately and ...
Exchange of CAD Part Models Based on the Macro-Parametric Approach
CAD exchange of design intents parametric STEP
2009/8/19
It is not possible to exchange parametric information of CAD models based on the current version of STEP. The design intent can be lost during the STEP transfer of CAD models. The Parametrics Group of...
CAROD: Computer-Aided Reliable and Optimal Design as a concurrent system for real structures
Reliability-Based Design Optimization reliability analysis CAD concurrent engineering
2009/8/19
Computer-Aided Reliable and Optimal Design (CAROD) system is an efficient tool defining the best compromise between cost and safety. Using the concurrent engineering concept, it can supply the designe...
An Efficient Algorithm for Real-Time 3D Terrain Walkthrough
Terrain rendering ROAM Implicit coordinates method Culling techniques GIS
2009/8/19
The paper presents an efficient algorithm based on ROAM for visualization of large scale terrain models in realtime. The quality and smoothness of the terrain data visualization within a 3D interactiv...