噪

The basic iterative algorithm and the error spreading induced by the method were quantitively analyzed, and the certain relationship between the image spatial resolution and the image SNR was also presented.

在建立系统工作模型的基础上，对基本递推算法和由此引入的误差扩散效应进行了定量化分析，并初步给出图像信噪比和图像空间分辨率之间的量化关系。

According to the relationship of wavelet transforms and perfect reconstructional FIR filter banks, this paper presents an algorithm for de-noising with Donoho non-linear soft-threshold in defferent levels of multiscale space through rearranging the input data before convolving and filtering and sub-sampling.

本文从子波变换与完全重构FIR滤波器组的特定关系出发，将输入数据按一定规律重新排列之后实时地将数据分解到不同的尺度空间，然后经过正交子波基的Donoho非线性软门限消噪处理。

Secondly, on the basis of the analysis of the spatial-temporal feature of background and infrared targets in infrared sequence, a method for clutter suppression and noise removement based on the association of spatial self-adaptating Two Dimensional Least Mean Square background predict and temperal Higher-Order Cumulant is presented, and its improved version suitable for strong edge rejection and gaussian noise suppression is proposed.

然后针对红外图像序列中弱小目标和背景的空间和时间特性，提出了一种空域改进的自适应二维LMS背景预测和时域高阶累积量相结合的杂波抑制和滤波降噪的预处理方法，理论和实验结果表明，该方法对于抑制强起伏的红外背景杂波和去除高斯噪声的影响非常有效。

This was the instance of wavelet transform to noise image for the first time, and the second, third and fourth transform were resemblant.

这是对含噪图像ano做第1次小波变换的情况，其第2次、第3次及第4次变换的情况与此类似。

The influence on test caused by nonlinear,nonuniform responsivity,dark current and noise etc of CCD was analyzed.

在高准确度OTF测试中，CCD必须具有优良的线性、较宽的动态范围、高信噪比。

It is resultful to apply the sound attenuated enclosure to controlling undesired sound.

静音箱在噪声控制中有良好的降噪效果。

Considering the particularity of bar code scanning system, a new method to analyze the intrinsic vignetting effect of retroreflective collection system with the help of computer graphics is proposed and has been used to optimize the optical system configuration.

为了得到尽可能高的信噪比，提出采用回向接收方案来限制接收系统的瞬时视场。针对条码扫描系统的特点，提出了一种利用计算机交互技术和图形技术来分析此回向接收系统渐晕特性的新方法。

By using the Ricker wavelet and thin inter-beds model data, taking Morlet wavelet, MSW wavelet (A mother wavelet which can match seismic wavelet) and three-parameters wavelet as mother wavelet respectively, the calculated instantaneous frequency is analyzed. Results show that the instantaneous frequency analysis based on three-parameter wavelet has good anti-noise ability and higher temporal resolution.

利用Ricker子波和薄互层模型数据，分析了以Morlet小波、匹配地震子波的小波及三参数小波为基本小波计算的瞬时频率，结果表明：基于三参数小波的瞬时频率分析方法具有良好的抗噪性能及较高的时间分辨率。

At last, a new shift-invariant de-noising method using finite ridgelet transform is proposed in this article.

最后在该算法的基础上提出了一种基于FRIT变换的平移不变去噪算法。

In the paper,we study the application of finite ridgelet transform in image processing and propose a algorithm of image denoising and two watermarking algorithms.

本文研究了有限脊波变换在图像处理中的一些应用，提出了一种图像去噪算法和两种水印算法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。