查询词典 virtual image

In this paper. Based on the analysis of chemical process equipments , the virtual manufacturing architecture for the chemical process equipments were discussed. As an example , the digital modeling approach , numerical simulation , virtual design and virtual manufacturing environment for the spiral gas liquid separator were studied.

在分析化工过程装备特点基础上，对过程装备虚拟制造技术平台的体系结构进行了探讨，以典型过程装备螺旋片导流式气液分离器为例，对其数字化建模方法、数值仿真技术、虚拟设计和制造环境进行了研究。

The Virtual Experiment and Virtual Laboratory appear with the development of computer technique and Virtual Instrument technique.

摘要虚拟实验与虚拟实验室是随着计算机技术、虚拟仪器技术的发展而出现的。

In this paper,by detailed narrations of structure of moveing-felt simulator,the component of virtual reality,the numerical control model of moving-felt platform,and our some research work in the technology of combination between virtual reality and the moving-felt simulator have been introduced,and we also development direction of virtual reality in the future.

通过对动感模拟器组成结构详细的叙述，介绍了虚拟现实的组成，给出了动感运动平台的数控模型，在虚拟技术与动感模拟器结合方面进行了研究，并介绍了虚拟技术未来的发展方向。

In virtual scene, especially in outdoor virtual scene such as flight simulation、 game and war game system, 3D cloud is a very important part because it improves the third dimension of the virtual reality.

在虚拟场景中，尤其是室外虚拟场景，如飞行模拟、游戏和军事演习等系统中3D云是一个非常重要的组成部分，使场景的真实度和交互性大大提高。

The main contents and results of research in this paper are shown as following: It is important to built the motion model of a virtual system. As the virtual object is the submarine in this simulation system, we studied on the motion model of the submarine and gave the submarine six DOF space motion equation MultiGen-Paradigm corporation's modeling software named Creator is used, the modeling of all entities and 3D terrain in virtual ocean environment is accomplished. Then introduced the theory of Large Area Database Management and realized the Large area database management; In the course of 3D scene simulation, Vega is utilized to develop the project. The building of 3D scene is done, which includes the simulation of static and dynamic ocean surface, realization of ocean wave, simulation of bow wave and stern wake, utilization of lighting and material, simulation of cloud and fog, kinematics' modeling of submarine etc.

论文的主要研究工作和成果包括以下一些内容：建立虚拟对象的运动模型是构造一个虚拟系统的关键所在，建立的运动模型准确与否直接关系仿真对象模拟的逼真度，由于本仿真系统的虚拟对象是潜艇，所以对潜艇的运动模型进行了研究，给出潜艇空间六自由度运动方程；利用MultiGen-Paradigm公司的Creator建模软件完成虚拟海洋环境中个实体模型建模和三维海底地形模型的建模；然后介绍了大地形数据库管理(LADBM，Large Area Database Management)技术的基本原理，实现大地形数据库管理；在三维场景仿真中，使用Vega驱动软件进行软件开发，完成了三维场景空间的建立，主要包括动态和静态海洋的仿真、海浪、船首波浪和传尾尾迹的实现，灯光和材质的使用，云和雾的模拟等。

Based on the virtual simulation environment of virtual prototype simulation analytical software ADAMS, the reliability based virtual experimental research was developed on the broadly applied crank - slider mechanism.

基于虚拟样机仿真分析软件ADAMS的虚拟仿真环境，对应用广泛的曲柄滑块机构开展基于可靠性的虚拟实验研究。

While based on the companions model and self-capacity model, selecting companions and allying companions can be realized and agent federations which can be nested are built to support the cooperation in the virtual enterprise. The tasks and activities in the virtual enterprise can be implemented through the activity model in the agent. In the virtual enterprises, we discuss the cooperation and negotiation deeply.

其中，虚拟企业的合作是基于虚拟企业过程模型进行的，通过任务、活动间各种约束关系的满足和实现，触发、执行了逻辑情景的演算过程，实现了合作伙伴间的合作，即将适当的信息在适当的时间传送给适当的人。

The paper first presents a linear timeconsuming model of data access through the analysis of the virtual storage principle and then gives a decision-making method for data placement and access path selection problem. In the development of this method, the concept of equivalent of virtual storage cost is defined to evaluate the data placement cost in the FC-SAN virtual storage environment.

首先通过分析虚拟存储原理提出了一个数据访问耗时的线性模型；然后，就数据放置和访问路径选择提出了一个决策方法；并在进一步探讨这一方法的过程中，定义了&虚拟存储代价当量&的概念，用以评价FC-SAN虚拟存储环境中的数据放置的代价，从而为评价以及如何选择数据放置和访问路径提供了一种定量的手段。

Feature of principal lines spatial distribution: detect the principal lines through edge detecting technology, and then divide the image of palmprint into blocks with same dimension, compute the mean and variance as feature; Feature of palmprint direction: divide the image into sub-images; compute the max angle of projection and coordinate of each sub-image, which stand for the direction and location of the line on the palm; Feature of moment invariants: compute the moment invariants of each sub-image and the whole image as feature.

掌纹主线空间分布特征：利用边缘检测技术检测出掌纹的主线，将图像分割成相同大小互不重叠的子图，提取每一个子图的均值和方差作为特征；掌纹线方向特征：将图像分成不重叠的子图，利用Radon变换求出每一个子图的最大投影角度和坐标，也就是子图内掌纹线的方向和位置，构造特征向量；掌纹不变矩特征：提取图像整体和分割后的子图的不变矩作为特征。

First, it was to obtain two binary images from segmenting image by two thresholds. Second, erosion, opening and closing were done to the two images according to some knowledge of the shape and location of the objects in the image that we have already known. Last, the edge information from the image segmented by a high threshold was put into the image segmented by a low threshold. It is the way to segment and discern circular objects accurately from the complex image and can greatly improve the accuracy rate of discerning.

首先分别根据两个阈值进行分割得到两幅二值图像，然后根据目标是圆形以及其大致位置等先验知识分别对两幅图进行腐蚀，开启，闭合等数学形态学运算，将高阈值分割得到的图像中的边界信息叠加到低阈值分割得到的图像中，实现对复杂背景图像中圆形物体的准确分割与提取，解决了复杂背景图像中物体识别率低的问题。

This is the inheritance of the tribe of the children of Issachar according to their families, the cities and their villages.

19：23 这些城并属城的村庄就是以萨迦支派按着宗族所得的地业。

I've have enough of your garbage.

我听了你的废话。