In this paper , for the first time the modulus maximum pair of wavelet transform was used to detect otdr signals by detecting their singularity points . otdr signals were decomposed with a dyadic spline wavelet by mallat algorithm , all kinds of event points were recognized by analyzing the relationship between signal with points of event and the modulus maximum pairs of its wavelet transform 本文首次将小波变换模极大值对监测信号奇异点的理论应用于otdr信号，采用二进样条小波对otdr信号按mallat算法进行变换，分析含有事件点(故障点)的信号与其小波变换模极大值对的关系，对不同的事件点进行识别。
3d linear interpolation method was used to transform displacement and force data between fluid and solid structure meshes in an indirect fluid - solid interaction simulation . by computing an axial - flow compressor blade , results show that 3d linear interpolation method is an effective method and indirect fluid - solid interaction suit for engine blade simulation . software integration is feasible method for coupling 提出一种对发动机叶片及通道进行气动、结构的间接流固耦合交替计算方法,并采用三维线性插值方法对ansys和fluent中的网格数据进行变换,并对不同材料和不同转速叶片的模型进行流固耦合计算,结果表明三维线性插值方法是一种简单、计算量小、可行的数据交换方法。
First , this dissertation gives a geometrical projection - based 3d warp algorithm , which has proved the feasibility to bring the studying method of ibr into geometry models - based modeling and rendering . it is an all - purpose algorithm , which can perform coordinate warping under different projection for scene and object models , and , this algorithm can perform color warping according to lighting characteristics 算法的提出证明了将图像绘制的研究方法引入几何绘制领域的可行性，算法通用性好，对场景模型与对象模型均能够依据不同的投影关系进行图像的坐标变换，同时，算法还能够依据光照特性对象素点颜色值进行变换。
We transformed the nonlinear equation of the light - wave envelope in lossy dispersion - managed optical fibers and obtained numerical curve of the equation with the use of mathematical software , then the approximate solution was found by fitting of the curve , also the envelope propagation of the quasi - soliton was analysed 摘要对有损耗的色散光纤中光波包络的非线性方程进行变换，借助数学软件得到非线性方程的数值曲线，并通过对曲线的拟合得到方程的近似解，对色散管理类明孤子的传输进行了分析。
Therefore , the image segmentated by a only threshold is not effective on numbers recognition . this text exerts mathematical morpholoy methods on this image and commendably eliminates illumination asymmetry of image . the image after processing by mathematical morphology methods passes throught segmentation by a only threshold and is effective on numbers recognition . this text brings forward a method - relative brightness value processing , the method eliminates illumination asymmetry of image , thins hues of numbers and boosts up the contrast between lines of numbers and background . the image after processing by mathematical morphology methods passes throught segmentation by a only threshold and is effective on numbers recognition 本文运用灰度数学形态学的方法消除图像光照不均匀的现象，处理后的图像再进行阈值分割，很好的提取出号码线条。本文用相对灰度值变换的方法对图像进行变换处理，消除了背景不均匀的现象、细化号码线条、强化了号码线条与背景的对比度。分割出的身份证号码线条细而光滑，很好的满足了身份证号码识别的需要。
The output of filter is transformed and then dielectric loss angle ' s tangent is computed by three method - fft , faft or czt , later the three method ' s advantage and disadvantage on computing compute dielectric loss angle ' s tangent is contrasted , at last faft is selected in this system 分别用快速傅立叶变换( fft ) 、抗混叠快速傅立叶变换( faft ) 、线性调频z变换( czt )对滤波器输出信号进行变换进而计算介损角正切值，然后比较它们三者在此问题上的优劣，最后我们选用faft法。
In the field of resource and environment science , digital image processing technology is a new advanced technology . it is a comprehensive technology that transforms , simulates and emulates spatial discrete data , and expresses spatial information models with pictures , solves the analysis of natural processes , then provides us with the basis of management and policy decisions 在资源与环境领域中，数字图像处理技术是一项高新技术，它是在计算机硬件系统支持下，对空间离散数据进行变换、模拟与仿真，用图像表达空间信息模型，解决自然过程分析，进而为人类提供管理与决策依据的一种综合技术。
