变换函数

Tubbs firstly used a regularized Beta function to fit the contrast transform of an input image.

不同对比度分布的图像应采用不同的对比度变换函数。

Tubbs redefined the several common nonlinear functions of gray transform as a normalized Incomplete Beta Function, in order to realize image enhancement processing.

传统的图像增强处理是针对图像灰度分布的不同情况，来定义相应的灰度变换函数。

Transforming functions are similar to logarithm, sigmoid, arctangent, etc, not depended on a prior knowledge of characteristic exponent, and facilitative for practice application.

变换函数可以是对数型、Sigmoid型、反正切型等，这些变换函数不依赖于对特征指数α的先验知识的了解或估计，便于工程应用。

Schwartz mapped the interior of each fluid cycle in the physical plane into an annulus of unit outer radius in the mapping plane according to the conformal transformation. And the perturbation theory is the main way of solving conformal parameters.

L.W.Schwartz的关于定常二维非线性波算法的主要思想是为了利用已知速度势的解析解，将一个波长的自由表面同底部所限定的流域采用合适的保角变换函数变换为映射平面上一圆环，在求解保角变换函数的变换系数时采用摄动理论进行求解。

In addition, the algorithm has comprehensive potential application in computer graphics, computational geometry and so on. To fast and precisely select nodes and elements, some transformation functions which are implemented substitute the OpenGL's API functions, then facilitate dynamic interactive query.

为了精确、快速的选择节点和单元，作者通过对OpenGL拾取选择技术内部实现细节的深入分析，开发程序实现了一些变换函数，解决了OpenGL提供的API函数不能对节点单元的精确任意拾取的问题，并实现了节点单元的动态交互查询。

By taking use of self-adaptive searching algorithm, optimal parameters of Incomplete Beta Function can be acquired, thereby obtaining the corresponding optimal transform curve. In this paper, Incomplete Beta Function is applied in contrast enhancement of container cargo inspection image, and the advantages of this function are well illustrated by comparing the experimental results.

Tubbs将图像增强处理中几种常用的非线性变换函数，表示成了一个归一化的非完全Beta函数，通过自适应搜索算法可以确定Beta函数的最佳参数，从而确定了相应的最佳变换曲线，将该函数应用于集装箱检测图像的对比度增强，通过对实验结果的比较，说明了该变换函数的优越性。

The inverse function of the geometric transformation method and formula of magnetic field intensities from transformation region to external one are given.

给出几何变换函数的反函数的数学模型，以及变换域和外域之间的场量变换公式。

Further more, related fast algorithms are constructed by auxiliary functions and transforms. Based on the proposed algorithms, a Matlab subroutine library is implemented.

通过构造辅助函数和辅助变换，给出了相应的快速算法，并在此基础上实现了一个基于Matlab的非规则区域广义傅式变换函数库。

The improvements consist of two parts: 1 generalizing the PDE based approach to contrast enhancement to adapt to any specified stretch function for global and local contrast enhancement; 2 proposing a piecewise linear stretch function design method to achieve better histogram equalization.

改进包含两个方面：1 修改并推广了原有的基于PDE的灰度增强方法，使之可适用于任何设定的灰度拉伸函数；2给出了一种通用的分段线性拉伸函数设计方法，它较采用累积直方图作为灰度变换函数可达到更好的直方图均衡化效果。

They are the improved fuzzy identification method based on Box-Cox transformation and Sigmoidal function, respectively.

一种是基于Box-Cox变换的改进模糊辨识方法，另一种是基于S型变换函数的改进模糊辨识方法。

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如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。