消除噪声

A new and efficient geometrical correction algorithm is proposed for MODIS IB data, and possesses of the merits of forward mapping and inverse mapping algorithms; 3. Algorithms to remove stripe noise in MODIS IB data are developed, including Fourier Transform, Wavelet Transform and interpolation method; 4. MODIS data composite algorithm is developed, and a 16-day composite map covering entire China and its outward is produced.

本文介绍了开发MODIS数据基础处理软件的基本算法和成果，主要包括：(1)用C++语言开发和实现了MODIS数据基础处理软件；(2)研究和发展了一个普适的、全新的、兼有前向映射和后向映射优点的MODIS 1B数据几何纠正算法；(3)研究和实现了MODIS条带噪声消除算法，包括傅立叶变换、小波变换和插值三种算法，并对其进行了比较；(4)研究和实现了MODIS影像合成算法，并在此基础上完成了中国及周围地区16天MODIS彩色影像和植被指数的合成。

How to remove and degrade it has been becoming a constant research topic in the fields of image processing.

如何消除、减小噪声一直是图像处理领域中研究的热点问题。

With regard to the over-segmentation of watershed algorithm and the characteristics of the slice images of the digitized Chinese No.1 female dataset,a new segmentation algorithm that can effectively eliminate local minima and noise disturber was presented.

针对分水岭算法存在的过分割问题以及VCH-F1切片图像的特点，提出了一种能够有效消除局部极小值和噪声干扰的分割方法。

The background of sample images was removed by the Method of Maximum Classes Square Error in the red color band of the RGB image and noise was eliminated by median filter.

2通过对样本图像的分析对比，本研究使用R分量的最大方差自动取阈值分割算法消除背景，用中值滤波器快速算法去除图像中的噪声，改善图像质量。

It is shown that the new MMSE-based method outperforms zero forcing equalizer. It can mitigate the intersymbol interference and depress the noise amplification effect simultaneously, and subsequently maximizes the signal to noise ratio of the system at the receiver.

该均衡算法的性能要明显好于基于ZF准则的方法，并且在消除ISI的同时可以抑制噪声的影响，从而使系统的输出信噪比达到最优，而增加的复杂度很有限。

Fourier transform can be used to compress data and diminish part of the noise.

结合傅里叶变换可对数据进行压缩和消除部分噪声的影响。

Through studying some fundamental properties of the curved surface in differential geometry , a method of linear feature extraction based on differential geometry is introduced.

通过研究微分几何理论中曲面的一些基本性质，本文介绍了一种基于微分几何的线状地物提取方法，首先在局部区域内拟合一个二次曲面函数，然后通过该函数来估算灰度曲面的梯度和曲率，设定合适的梯度和曲率阈值来检测线状地物，最后进行后处理，消除许多噪声颗粒及小块区域。

According to the difference of Doppler spectra of meteor trail echo and clutter of ground and sea,a FIR high-pass filter is designed to filter out clutter and so the meteor trail echo becomes obvious.

该文根据地海杂波与流星干扰在多普勒谱上的差别，提出了用FIR型高通滤波器滤除杂波使流星干扰凸显出来；再根据流星干扰的分布特点分段计算背景噪声均值，求取流星干扰检测门限；最后用杂波信号来插值流星干扰位置上的数据，消除因去除干扰造成的杂波相位不连续。

According to the difference of Doppler spectra of meteor trail echo and clutter of ground and sea, a FIR high-pass filter is designed to filter out clutter and so the meteor trail echo becomes obvious. Then a smart threshold is obtained from the minimum mean of different segments of background noise and used to detect the meteor trail echo. Finally the phase discontinuity of clutter from the meteor trail echo suppression is eliminated by substituting the data at echo positions with clatter.

该文根据地海杂波与流星干扰在多普勒谱上的差别，提出了用FIR型高通滤波器滤除杂波使流星干扰凸显出来；再根据流星干扰的分布特点分段计算背景噪声均值，求取流星干扰检测门限；最后用杂波信号来插值流星干扰位置上的数据，消除因去除干扰造成的杂波相位不连续。

In fact, even without a ground loop, a little noise current always flows through every interconnecting cable (ie, it is impossible to eliminate these currents entirely).

事实上，即使没有接地回路，几乎没有什么噪声电流总是流经每个互连电缆（即，就不可能消除这些电流完全）。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。