查询词典 filter bed

In view of the coefficients of CDF9/7 wavelet filter are irrational number, we use the trigonometric function transform to factorize the perfect restruction and the biorthogonal conditions of biorthogonal wavelets filter banks, then optimize the coefficients of the original 9/7 wavelet filter banks, consequently a novel 9/7 wavelet filter banks with binary digit coefficients can be obtained.

2针对CDF9／7小波系数为无理数的缺点，对CDF9／7小波滤波器组的完全重构条件和双正交条件进行三角基函数变换和因式分解，并对求出的小波滤波器系数进行优化设计，得到一组滤波器系数都为二进制分数的9／7双正交小波滤波器组，大大降低了离散小波变换的算法复杂度。

In order to overcome the shortcoming of the passive power filter and parallel active power filter, a new parallel hybrid active power filter on base of the conventional parallel active power filter is proposed in this thesis.

本文针对无源滤波器和单独使用的有源滤波器的缺点，对传统的并联混合有源电力滤波器进行创新性改造，提出一种适用于大功率场合的谐波和无功综合治理的新型并联混合有源电力滤波器。

Fifth, Applying the main idea of the improved center weighted median filter to the design of the optimal stack filter based on omnidirectional structural elements constrains, the dissertation raises a kind of improved filter algorithm for de-noising of pulse noise. The theory analysis and the simulation experiment of the image processing shows that this kind of filter can not only remove noise effectively but also keep detail of the image sufficiently.

根据最优全方位结构元约束层叠滤波器中常规中值滤波带来的图像高频细节信息的丧失，引入改进的中心加权中值滤波器，从而提出改进的最优全方位结构元约束层叠滤波新方案，实验和理论证明，它相对于最优全方位结构元约束层叠滤波方案，在滤除噪声的同时更有效保持了图像的高频细节信息。

Sixth, Using the ability of the better keeping the image's detail of the morphological filter with omnidirectional multiple structuring elements and the ability of the strong removing noise of the improved center weighted median filter, this dissertation suggests a new kind of designing project of the hybrid filter for de-noising of pulse noise, which applied the idea of the stack filter based on omnidirectional structural elements constrains to the project.

利用全方位形态滤波的图像细节保持性能，中心加权中值滤波的噪声抑止能力和全方位结构元层叠滤波方案的并行处理思想，设计了一种新的脉冲噪声混合滤波新方案，它在滤除噪声的同时较好地保持了图像的细节部分，特别是其高频微小细节部分。

The new filter not only has the advantages of the incoordinate interval filter, which can solve the local filter\'s problem that the different navigation device measurements have different periods in real system ,but also has the advantages of preventing distortion of filter which caused by the imperfect arithmetic method or the incorrect statistical characteristic of noises.

对MINS/北斗/GPS多传感器信息融合算法进行了研究，提出了一种改进的非等间隔联邦滤波器，这种滤波算法除了具有非等间隔联邦滤波器的优点即可以解决各局部滤波器的量测信息的周期不同外，还具有抑制因计算方法不完善或系统噪声统计特性不确切而引起的滤波发散的功能。

Power filter is the ideal low-pass filter, but the actual power filter is usually band stop filter.

理想的电源滤波器是低通滤波器，但实际的电源滤波器通常是带阻滤波器。

Low-up-middle filter, LUM filter for short, is a kind of nonlinear filter developed on the basis of middle filter.

低-高-中滤波器(Lower-upper-middle filter，简称LUM滤波器)是中值滤波基础上发展起来的一种非线性滤波器。

The non-reference-signal's adaptive digital filter algorithm of multi-sensor data fusion in the course of adaptive filter can be done without reference signals. It can adjust convergence constant automatically, it can also be recurred with real gradient value. Thus the field to apply the adaptive filter is widened, the convergence speed of the adaptive filter is sped up, the weighted disadjustmend is decreased, so that the last error of mean square approaches its minimum value more.

这章研究的基于多传感器数据融合无参考信号的自适应数字滤波算法其在自适应滤波过程中具有不用参考信号与自动调整收敛因子及使用实际梯度值进行递推的特点，这样不仅可扩大自适应滤波的使用范围，而且还使自适应滤波的收敛速度加快有效地减小权失调，从而使最后的均方误差更接近于其最小值。

Combining vector median filter and mean value filter, vector median-mean filter, which can filter Gaussian noise and impulse noise and preserve fine details, is adopted.

为了提高图像的质量，采用了既能保持图像细节又能滤除脉冲和高斯噪声的中值滤波算法和均值滤波算法相结合的矢量中值均值滤波器。

The modified neighborhood field average filter,modified median filter and mode filter are analyzed,and a new practical method,which combines multilook average and nonlinear filter to reduce noise in the wrapped phase map,is presented.At the end of this paper,the characteristics of these approaches are compared and the experimental results by processing ERS-1/2 data are used to confirm that the method is more effective in suppressing noise in the interferogram of INSAR.

在比较条件邻域平均、模糊中值滤波和模数滤波3种非线性噪声抑制方法的基础上，提出了一种结合多视平均和非线性滤波的干涉相位图噪声抑制实现方法，并用ERS-1/2数据的实际处理结果验证了方法的有效性。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。