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布尔操作
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  boolean operation
     Boolean operation of the cutter swept surface with workpiece is fulfilled among one-dimensional Dexel arrays and workpiece at high speed.
     刀具空间扫描体模型和仿真工件模型之间的布尔运算转化为Dexel模型之间的一维布尔运算,简化了布尔操作并提高了操作速度.
短句来源
     Based on the complexity and regularity of hull structure. taking full advantage of the computer's performance and Boolean operation between the work plane (WP) and the geometrical element in ANSYS,an convenient FE modelling method of ship-hull surface is presented in order to reduce the data inputting and processing,which contributes to the ship-hull structure strength analysis.
     为寻求一种高效的船体结构有限元建模方法,针对船体结构的复杂性和规律性,充分利用当今计算机的高性能,以及ANSYS软件中工作平面(WP)和图元布尔操作的强大功能,提出一种用于ANSYS软件的方便快捷的船体外板有限元建模方法,这种方法能避免过多地人工输入或处理数据,为船体的强度分析提供了有利的手段。
短句来源
     Boolean Operation of Non-Regular Precise Geometric Models
     非正则精确模型的布尔操作
短句来源
     Research and Implementation of Boolean Operation between Regions and a Pixel-level Algorithm for Generating Parametric Curves by Subdivision
     区域的布尔操作和参数曲线的分段生成算法研究与实现
短句来源
     It applies the continuous SSI mentioned above to motional solid Boolean operation, and uses the similarity of intersect curve to simplify SSI problem, it can save computation time.
     结合前面提到的连续变化曲面求交算法,在原有雕塑实体布尔操作的基础上,把连续变化曲面求交技术应用到运动雕塑实体布尔操作中,利用连续运动中曲面交线相似性进行求交简化,加快布尔操作计算时间,加入对连续运动实体的特殊处理,提升了运动雕塑实体布尔操作的计算效率。
短句来源
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  boolean operations
     To meet the demand of some time-critical situation, the dissertation presented a distributed algorithm for Boolean operations of curved solids.
     为了在某些限时操作下得到实时交互的速度,在运动雕塑实体布尔操作的基础上,本文进一步提出了一个运动雕塑实体模型布尔操作的分布式并行算法。
短句来源
     The methods to structure the BDDs of outputs are discussed,and two different kinds of algorithms dealing with the boolean operations between BDDs are discussed.
     讨论了构造输出函数的二叉判定图BDD的不同方法,并分析了BDD间布尔操作的不同的算法的异同;
短句来源
     A Distribute Algorithm for Boolean Operations of Sculptured Solids Based on a Heterogeneous LAN
     一个基于异构型局域网的雕塑实体布尔操作并行算法
短句来源
     The conventional method is to generate evaluated boundary representation by converting features into solid primitives and corresponding Boolean operations.
     对于拉伸类特征:孔、槽、凸台等,通常将其特性轮廓线拉伸形成标准特征体,然后用布尔操作与基本体结合。
短句来源
     We know that curves can be approached by mini line-segments, so the Boolean operations between almost all regions can be implemented by this algorithm.
     由于曲线边界可以由小线段组成的多边形来逼近,所以通过本算法,我们还可以实现任何边界区域间的布尔操作
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更多       
  boolean operator
     Considering soil-pipe interaction, Boolean operator is used to merge site and pipe, and site-pipe physics contact is solved through soil-pipe friction.
     考虑到场地和管道间的相互作用,在ADINA三维有限元建模过程中,应用布尔操作实现场地与管道间的几何融合,并通过管土摩擦解决场地与管道间的物理接触问题。
短句来源
     An Optimum Method for Boolean Operator of Solid Models
     高效的实体模型布尔操作
短句来源
     For the closed loop entities, the window clipping is completed by combining the boolean operator used in region.
     对闭环实体 ,组合使用“面域”的布尔操作实现窗口裁剪。
短句来源
  “布尔操作”译为未确定词的双语例句
     In order to improve the efficiency of point- sampled 3D surface rendering and editing, the integration of scalar-field free-form deformation (SFFD) and implicit surface functions is explored.
     探讨将标量自由变形技术(SFFD)和隐式曲面函数相结合,提高基于采样点的3D曲面绘制与编辑效率。 在此基础上开发了一个包括曲面光滑、尖角、变形和布尔操作在内的三维模型的曲面编辑工具。
短句来源
     In order to reduce the redundant data in models and improve the efficiency of model design, this paper proposes a scheme to compress and simplify the freeform features.
     为了减少模型中的冗余数据,提高模型设计的效率,给出了对自由曲面特征压缩和简化的方案,并提出在HUST-CAID系统中对特征进行参数化和识别的方法,以及利用布尔操作对自由曲面特征模型进行重构的方法。
短句来源
     In recent years point cloud processing has become a hot research, such as studies on point cloud data reconstruction, division operation.
     对点云模型的处理已成为近年来研究的热点,如研究针对点云数据的曲面重建、分割、布尔操作等。
短句来源
     The dexel model method proposed by Van Hook can reduce greatly storage size , but, in our opinion, still suffers from certain shortcomings which we discuss in some detail in this paper. Therefore, we present a new geometrically compressed structure that utilizes the dexel model in three directions to represent a voxel model.
     介绍了一种压缩表示形式的 Voxel模型结构 ,该方法用 3个方向的 Dexel模型表示 Voxel模型 ,其计算机内部存贮空间得到了很大的压缩 ,布尔操作也得到了进一步的简化。
短句来源
     In the wire-EDM simulation, the generated solid model can be used to investigate programming results and to check the machining accuracy.
     在线切割仿真中,基于实体布尔操作实现了实体切割模型的生成。
短句来源
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  boolean operation
Inspired by digital technique, we introduce two kinds of boolean operation into GA to develop a novel mutation operator and discuss its contribution to preventing the loss of critical alleles.
      
This separation makes the Boolean operation process simple and robust.
      
Using Graftree, the Boolean operation produces no risk of yielding topological conflicts, which often cause the simulation to stop abnormally.
      
The method has been powered adding a multi-layered, bit-masking oriented data structure and a boolean operation based control mixer, allowing special blended crossover operators obtained by superposition of the standard ones.
      
Then, through a Boolean operation of the splint blank and the maxilla-mandibula model, the dental splint model is formed.
      
更多          
  boolean operations
Finally, the 3D integrated model was established by Boolean operations between 3D geological objects and engineering objects.
      
One challenge is to generate valid models at various LODs after an arbitrary rearrangement of features using a certain LOD criterion, because composite Boolean operations consisting of union and subtraction are not commutative.
      
Nicolog compiles a very general class of built-in constraints into equivalent sets of PCs, allowing an arbitrary mixture of integer (easily extensible to real) and Boolean operations.
      
Arithmetic expressions for switching functions are introduced through the replacement of Boolean operations with arithmetic equivalents.
      
In particular we settle two open questions of [1] concerning the derivability of inference rules for Boolean operations on the right side of multivalued dependencies.
      
更多          
  boolean operator
Then, the Boolean OperatoR (BOR) strategy is applied to design and select test cases.
      
The number of test cases needed to satisfy the BOR strategy grows linearly with the number of Boolean operators in CEG, and BOR testing guarantees detection of certain classes of Boolean operator faults.
      
An introduction and conclusion to the description of the Boolean operator is included with each part.
      
Comparing with the Boolean operator, carving can produce smoother and softer results.
      
See the Appendix for more details on Boolean operator searching.
      
更多          


When implicit surface is defined by equation f(x,y,z) =0, the object defined by the implicit function is the set of points which satisfy the inequation f(x,y,z) ≥0. For the object, it's possible to do union, intersection and subtraction etc using R function. As a special implicit function, the Metaball function can also be used in blend and deformation for solid modeling except the common properties of implicit function. It is proved that R function can be used in Boolean operation of solid modeling...

When implicit surface is defined by equation f(x,y,z) =0, the object defined by the implicit function is the set of points which satisfy the inequation f(x,y,z) ≥0. For the object, it's possible to do union, intersection and subtraction etc using R function. As a special implicit function, the Metaball function can also be used in blend and deformation for solid modeling except the common properties of implicit function. It is proved that R function can be used in Boolean operation of solid modeling and Metaball model can be used in the blending of shape.

若隐函数曲面由等式f(x,y,z)=0定义,则其相对应的实体满足不等式f(x,y,z)≥0,对这种实体的并、交、差等布尔操作采用R-函数来实现.特别地,由Metabal定义的隐函数,除具有隐函数的一般性质外,还可用于实体造型中的过渡及变形控制等.证明了用R-函数实现实体的布尔操作的可行性及Meta-bal模型在几何造型中能光滑过渡等性质.

This article presents the Boolean Operation Based Structure Matching (BOSM) method,which is based on current matching approaches used in technology mapping.This method not only has the merits of Boolean matching method,but also has the structure matching method advantage of simple time complexity.When a Boolean function has n input variables,BOSM method's time complexity is O(n 3) .

本文在已有工艺映射匹配方法的基础上,给出了以布尔操作为基础的结构匹配(BooleanOperationBasedStructureMatching)方法.该方法不仅具有布尔匹配法的结果可靠的优点,同时具有结构匹配法的时间复杂性简单的优势.当布尔函数的输入变量数为n时,BOSM法的时间复杂性是O(n3).

In this paper, an algorithm for Boolean operation between sculptured models is presented and the accuracy, efficiency and robustness are the main considerations. The solid model is represented with the trimmed parametric patches and half edge data structure. Hierarchy intersection is applied for unified classification, and tracing the intersection curve to overcome degenerate cases occurring frequently in practice is also used. It can easily be extended to Boolean operations for non manifold models. The algorithm...

In this paper, an algorithm for Boolean operation between sculptured models is presented and the accuracy, efficiency and robustness are the main considerations. The solid model is represented with the trimmed parametric patches and half edge data structure. Hierarchy intersection is applied for unified classification, and tracing the intersection curve to overcome degenerate cases occurring frequently in practice is also used. It can easily be extended to Boolean operations for non manifold models. The algorithm as a part of a modeling system on a SGI workstation is implemented.

给出了一个雕塑实体布尔操作的实现算法,在保证效率和精确性的同时确保鲁棒性是算法的目标.实体模型通过裁剪曲面片和半边数据结构来表达几何和拓扑信息.采用了层次求交和交线跟踪的方法来保证曲面片分割和区域分类的一致性,从而克服实践中常见的退化情况.该算法也可以方便地扩展到非流形模型的布尔操作.作为一个实体造型系统的一部分,该算法已经在SGI工作站上实现.

 
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