So it can provide reliable information for the design and improvement of the connecting rod . the geometric model is built by using 3 - d cad software unigraphics ( ug18 ) , and the 3 - d solid geometry of the connecting rod is meshed by using msc . patran , an fem pre - and postprocessing software 本文采用了unigraphics 3d软件进行实体几何建模,应用有限元前处理软件msc patran对连杆模型进行网格划分、加载和约束的处理,然后提交到msc
Abstract : in order to solve complexity of structure and postprocessing of fixing picture pick - up system on tracking moving target , the paper introduces the picture pick - up tracking system based on computer and array ccd , the autotracking is realized by mean of image capture and process 文摘:为解决固定式摄像系统在监视活动目标时所需的系统结构复杂、事后处理繁杂等问题,介绍了一种基于计算机、面阵ccd的摄像跟踪系统,通过对图像的采集、处理来实现自动跟踪。
Some linear approaches reported recently without postprocessing to fir system identification are discussed . this paper improves the question of the promulgation of error due to estimating middle parameter frequently in other related methods , and presents a direct algorithm of estimating parameter without estimating middle coefficient . through proper mathematic means , for example , singular value decomposition ( svd ) or total - least squares solution ( tls ) , this algorithm smoothes the noise and improves effectively the estimation performance 和2阶统计量相比,高阶统计量不仅能够有效抑制高斯有色噪声的影响,而且能够揭示随机过程的相位特性,因此,高阶统计量是解决非高斯、非最小相位、非因果系统和有色高斯噪声环境的系统辨识和处理问题的重要分析工具。
On concerning with the problems of the preprocessing and the postprocessing , it briefly introduces the theories of the computer graphics and discusses how to apply the interactive graphic technology in developing the structure analysis . on concern with the computing , it classifies the computing tasks of structure analysis programs with the concepts of oop and points out the hierarchy of the tasks . it also presents the ideas of constructing the structure analysis storehouse 在前后处理当中,本文着重运用计算机图形学的知识讨论了怎样将图形交互技术运用于结构分析程序的编制,在结构分析计算中则运用面向对象思想对结构分析程序的计算任务进行了分类,并指出了其中的层次关系,进行了类的设计,还针对不断发展的结构分析方法,提出了建立结构分析类库的思想。
Then the gray image is transformed into a binary image through a one - by - one - point section - threshold binary algorithm . after that , a postprocessing is implemented on the given binary image . in the part of thinning algorithm , an improved thinning algorithm derived from the opta is introduced in , for the purpose of producing high quality skeleton of fingerprints , on which the more accurate fingerprint feature location and type are based 采用离散方向法来求取指纹的点方向图,进而用直方图法结合动态分块得到指纹的块方向图;再对指纹图像进行方向法滤波;然后使用逐点局部阈值法,对指纹图像进行二值化处理;二值化后对二值图进行后处理;细化算法采用基于opta的改进细化算法,可以获得高质量的指纹骨架。
Each unit of a speech recognition system is studied in this paper , which includes the preprocessing , the training of reference patterns , the connected digit speech recognition algorithm and the postprocessing of confusing pairs . the research of endpoint detection includes the endpoint detection not only in the quiet environment but also in the low signal - to - noise ( snr ) situation . as far as the training of the reference patterns is concerned , the modified k - means algorithm is adopted . the most important part of this paper is the research of connected speech recognition algorithm . two kinds of algorithm are put forward , which are based on the existing fruit of mutual - information match theory 其次汉语连续数字发音连续程度较高,这主要由于汉语数字发音中零声母语音出现的较多。另外汉语连续数字串中各个数字的协同发音现象较严重也给汉语连续数字语音识别带来了困难。本文以互信息理论为基础,从语音模式间的交互信息量的角度,研究了一个完整的语音识别系统的各个组成部分,其中包括预处理、参考模式的训练、连续识别算法以及后续处理部分。
The cad / cam process of the handle part was implemented , including constructing 3d entity modeler , creating tool path , computer simulating , postprocessing cutter location files into tape files for a specific machine tool , transferring machining information of the handle part by the network - based cad / cam prototype system , nc machining of the handle part at last 利用网络化cad / cam原型系统实现手柄零件cad / cam过程,包括手柄三维实体造型、刀位轨迹生成、计算机仿真检验,后置处理生成特定机床的g代码,通过网络传输手柄零件加工信息,最后完成手柄零件的数控加工。
Oop has been applied to the field of structure analysis programming . 3 . on concerning with the problems of the preprocessing and the postprocessing , it briefly introduces the theories of the computer graphics and discusses how to apply the interactive graphic technology in developing the structure analysis 取得的主要研究成果: 1从实际工程问题出发,研究了结构分析的数学原理、过程并改进和提出结构分析的算法,既便于工程人员理解结构分析的原理,又便于应用数学工作者开展理论研究; 2用面向对象思想指导结构分析的软件设计; 3对结构分析的前后处理进行了可视化研究。
The stability and credibility of the mechanical system virtual prototyping simulation software is enhanced . based on windows nt platform , the practicable software of mechanical system virtual prototyping which include preprocessing , solver and postprocessing are studied . the practicable version of mechanical system virtual prototyping ( msvp ) is developed 在基于windowsnt平台的pc机上,对机械系统虚拟样机仿真软件的前处理、求解器以及后处理各组件统一进行了实用化研究,开发了机械系统虚拟样机( mechanicalsystemvirtualprototyping ,简称msvp )仿真软件的实用化版本;通过几个典型实例对msvp进行了初步验证,并与adams仿真结果进行了对比分析,结果表明: msvp操作方便,运行稳定,结果正确,初步达到了实用化的要求。
Recently , advances in postprocessing mechanisms have been studied to improve lip synchronization of head - and - shoulder video coding at a very low bit rate by using the knowledge of decoded audio in order to correct the positions of the lips of the speaker [ 3 . 36 ] , figure 3 . 2 shows an example of the block diagram of such a postprocessing operation 最近,对改善在很低比特率时头肩像视频编码的唇同步问题的后处理机制的研究已经取得进展,这种机制运用解码音频的知识校正讲话者的唇位,图3 . 2显示了一例这类后处理过程的框图。