角度变换

词组短语

angular transformation

与角度变换相关的网络例句 [注：此内容来源于网络，仅供参考]

The accelerated algorithm of volume rendering based on textures mapping and the wavelet-based multiresolution volume rendering in network are performed by using OpenGL 3D visualization technique. From the point of view of computer graphics, 3D visualization mechanism of volume rendering based on OpenGL textures mapping is studied, including modelview transformation, projection transformation, perspective division, viewport transformation and the ways to embed textures mapping and blending in above four transformations.

利用OpenGL三维可视化技术实现了本文所提出的基于纹理映射的体绘制加速算法和网络环境下基于小波的体数据的多分辨率体绘制，并从计算机图形学的角度，研究了基于OpenGL纹理映射技术的体绘制的三维可视化流程，包括OpenGL的模视变换、投影变换、透视除法、视区变换，以及纹理的定义、映射与融合等步骤在上述四个变换中的嵌入方法。

The non-stationary index of automobiles\' supporting force response under side wind is analyzed, which confirms the reasonableness of stationary assumption in dynamic reliability analysis.Thirdly, joint distribution of wind speed and wind direction is established based on the extensive extreme value distribution, which is used for reliability analysis of bridge traffic safety.

其次提供了Fourier变换识别抖振响应频谱失真的实例，采用Hilbert-Huang变换分析桥梁抖振响应的时频特性，从结构动力学角度探讨了响应非平稳性的原因，从风工程的角度探讨HHT变换分量的物理意义，并分析侧风作用下桥上汽车支撑力响应的非平稳指标，为动力可靠度分析中平稳性假定的合理性提供必要的论证。

In this article two functional modes of the Fly-back Converter (Continuous Conduct Mode and Discontinuous Conduct Mode) are particularly analyzed, which include their characteristics, applications, the critical pattern of two functional modes is argued, both the exact boundary from the angle of circuit parameters is crystallized, at the same time, basic principle of PFC under the DCM mode is introduced, which settle theoretical basis for the subsequent design; by establishing the mathematic model of the converter, a further investigation of the configuration is made, qualitatively and quantitatively, analyzed to settle exactly theoretical basis for the subsequent emulation and the experimental parameter; from the angle of steady-state analysis, the transfer function of the system is deduced to establish dynamic small-signal state equation, emulating the system with the help of matlab, then according to the simulation result and the theory of PFC revise the system, lastly, we adopt the project which add a zero-pole compensator to the voltage loop, by this way, a satisfied system performance is gained and the PFC scheme is ensured successfully; finally, based on the previously-done work, we combining with the situation of specific design requirement, acquired the numerical value of each unit devices in this converter

详细分析了反激式变换器的两种工作状态，连续模式(Continuous Conduct Mode ，简称CCM)和断续模式(Discontinuous Conduct Mode，简称DCM)以及各自的特点、应用场合，论证了两种工作状态的临界模式，从电路参数的角度明确了二者的界限，同时还介绍了DCM模式下PFC的基本原理，为后面的设计奠定理论基础；通过对整个变换器系统建立准确的数学模型，对此变换器的电路结构做了进一步的研究，定性、定量地分析了变换器各部分的工作状态，为仿真和实验参数的确定以及电路参数的优化提供理论依据；从稳态分析的角度，为系统建立了动态小信号状态方程并推导出系统的传递函数，利用matlab对系统进行仿真，进而根据仿真结果以及PFC的相关理论对系统进行校正，采用在电压环加入零点—极点补偿器的设计方案，得到了满意的系统特性并且保证了PFC的顺利实现；最后，在前面所做工作的基础上，结合设计要求计算出此变换器系统中每个元器件的数值，利用Pspice对其进行了仿真、优化，然后根据仿真结果搭建了硬件电路。

A set of complex Morlet wavelet are applied on projection slice of each direction to decompose each projection into several frequency channels,the average and variance extracted are computed in each frequency channel,and then linear regression model is employed to computer realationship feature between frequency channels.1-D DFT is applied to features and the amplitudes of Fourier coefficient are selected as features,then the extracted features are rotation invariant.

该算法是将一定大小的图像进行二维傅里叶变换；其次在变换后的图像中央选择一个圆盘区域，并在方向［0°，180°］内进行等间隔角度频率抽样，实现方向分解，使用一组复Morlet小波对每个方向上的映射切片进行小波变换，从而实现多通道频率分解；在各个频率通道中计算均值和方差作为特征，并利用线性回归模型计算频率通道之间的关系特征；将特征沿方向进行一维傅里叶变换并取其幅值，从而得到旋转不变性特征。

The digital algorithms of integral and discrete wavelet transform are presented for purpose of electric power system protection, based on the analysis of wavelet transform for sampled digital signals under the Shannon sampling theorem.

从电力系统继电保护应用的角度，结合香农采样定理，深入探讨了连续信号和离散信号的小波变换的关系，给出了离散信号的积分小波变换和离散小波变换的数字计算方法。从理论上研究了信号小波变换的误差与尺度函数和小波函数的关系。

Based on the summarizing of the exiting algorithms of the texture mapping and antialiasing, this paper goes deeply into the basic theory and processing of texture mapping. The texture compress algorithm which can satisfy the need of the memory and time is given for the stochastic sampling in the inverse texture mapping; the geometry transformation in the texture mapping are discussed and the concepts of the unitary parametrization and the patch parametrization is proposed, some kinds of the unitary parametrization methods of parametric surfaces and the geometry transformation in the patch parametrization are also presented; in order to solve the aliasing in the parametrization of intermediate surface-sphere in two-part texture mapping, an area-preserving transformation is presented also; to improve the quality of the graph the aliasing in the texture mapping is analyzed from the aspect of signal process, and the modified summed-area tables algorithms is proposed; the distortion of the scanline conversion algorithms under perspective transformation is analyzed and the proper interpolation algorithm is presented so the aliasing problem of the polyhedral object after the unitary parametrization is efficiently solved.

本文在总结现有的纹理映射和反走样算法的基础上，深入研究了纹理映射的基本原理与过程，根据反向纹理映射对纹理随机采样的特殊要求，提出了一种可满足存储空间和寻址时间的纹理压缩存储算法；通过对纹理映射中几何变换理论的进一步深入探讨，提出了整体参数化和面片参数化的概念，并给出了参数化曲面的各种整体参数化方法和面片参数化的几何变换形式；针对现有的两步映射算法所存在的中间曲面—球面的参数化问题，提出一种等积映射方法，较好地实现了由非参数化面片拼接而成的多面体表面的纹理映射；从信号采样的角度深入分析了纹理映射中走样产生的原因，提出了改进的区域求和表算法，使图形生成的效果有所提高；还分析了一般的扫描线算法在透视变换中所存在的问题，提出了一种正确的插值算法，从而解决了整体参数化后多面体表面纹理映射的几何变形问题。

Fourthly, the reduced-Dimension STAP based on Joint-Domain Localized algorithm is studied for bistatic clutter cancellation, and a modified JDL algorithm is proposed, which transfers the space-time data to the angle-Doppler domain by using a transform matrix.

研究了基于局域联合处理算法的降维STAP双基杂波抑制技术，并提出了一种改进JDL算法，其空时数据域到角度—多普勒域的变换用角度—多普勒变换阵完成。

The algorithm utilizes the rotating transformation theory of vector, and derives a mathematical expression of trigonometric function which has the interval monotonicity. By comparing the values of mathematical expressions, the sizes of the angles can be judged, this avoids the troublesome calculations of angles, diminishes errors and raises efficiency.The prototype of 3D reconstruction system uses the DXF file as the data source.

文中的算法采用矢量的旋转变换理论，通过计算各分支路径与当前路径之间的三角函数值，利用变换后的三角函数表达式的区间单调性，将角度值的比较转换为三角函数表达式值的比较，从而避免了繁琐的角度值计算，减少了误差，提高了执行效率。

In this dissertation, the author first reduces the amount of computation and improves the transform speed by ameliorating the geometric angle-direction search methods. According to HVS properties that human eyes are not sensitive to the change of image's textures and edges, the dissertation proposes a digital watermarking algorithm based on HVS in improved Bandelet domain.

本文首先通过改进变换中的几何角度方向搜索方法降低了变换运算量，提高了变换速度，并依据HVS关于人眼对图像的纹理和边缘变换不敏感的特性，设计了一种基于HVS的改进Bandelet变换域图像数字水印算法。

In the course of reversing of haul-off unit the folds of the film occurred through the board of lambdoidal can be flattened and stretched by the angle conversion of several rollers, and this enhances efficiently the comprehensive physical and mechanical performance of the products.

并且将薄膜经过人字板时产生的皱折在牵引旋转过程中，经过多根导辊之间的角度变换，达到展平和拉伸的作用，有效提高制品的综合物理机械性能。

与角度变换相关的网络解释 [注：此内容来源于网络，仅供参考]

conformal transformation：共形变换

首先,讨论了支持向量回归(support vector regression,SVR)的基本原理.然后,从信息几何的角度分析了核函数的几何结构,通过共形变换(conformal transformation)构建与数据依赖(data-dependent)的核函数,使得特征空间在支持向量附近的体积元缩小,

crowning：鼓形修整

改进型HR15DE发动机除对凸轮轴进行齿面鼓形修整(Crowning)镜面加工、减少与阀门提升机构的磨擦外,还通过链导轨采用氟涂层减少了磨擦损失. 另外还扩大了连续可变阀门正时控制机构的变换角度,通过改进控制使吸气阀产生时序延迟、降低空转时的泵吸损失,

degree：角度

试一下变换角度(Degree)和合并多种旋转方式:plugins.cfg 这个文件指定应用程序使用的插件. 如果你要在程序中添加或移除某个插件,就要修改这个文件. 要去掉某个插件,只需要删除某一行,或用#直接注释掉它. 你想要添加一个插件,

Distributive：分布式

分布式(Distributive)产生的中间体更光滑和不规则. 角度式(Angular)生成的动画片的中间体保留边角和直线. 如果你的图形没有边角,设置会回复为分布式形态变换.

drill：钻

女人陶醉了是很忘我的,凄厉的惨笑撕裂长空钻(drill)入耳鼓搅拌我的脑浆-她若无其事地补妆,呲出参差的烟熏黄牙. 这里要谈一点,什么是精确?从数学的角度讲,我们可以通过严格的等价变换去验证算式的准确. 而证明>正确而精确的依据,

hologram：全息图

主要有"光学可变油墨"(OVI);"薄膜安全特征"(TSFD);"多重衍射光栅"(MDG);"全息图"(HOLOGRAM);"显像图"(KINEGRAM)等. 其特点是当钞票变换角度观察时,由于光的衍射,出现光可变性,底色和图案出现不同样式和颜色的变化.

Free Transform：[自由变换]

1) 通过使用选择类工具,自由变换(Free Transform)功能,对遗迹、遗物的单个图形先进行按比例缩放、角度调整. 2) 通过使用图层(Layer)功能和图层调板(Layer Palette),对单个的遗迹、遗物图像进行粘贴排列和版式编辑的工作.

convolutional code：回旋码

前向纠错中包含非常多的种类,如区块码(Block code)、回旋码(convolutional code)、涡轮码(Turbo code)、低集成度机偶校验证编码(LDPC Code)等等. 本文将对简介这些编码,由系统集成设计的角度及芯片实践的角度分别予以探讨,并以作者的实践经验提出解决的方案. [关键词]信道编码 码字 分集 衰落 低密度奇偶校验(LDPC)编码 变换