查询词典 laplace transform

The adaptive filter approach, the Park transform approach,the Hilbert transform approach and the instantaneous power approach are usually utilized to detect the rotor bar breaking fault on-1ine.

针对异步电动机轴承故障，本文就基于振动信号分析和定子电流信号分析的轴承故障检测方法分别进行了讨论。

To detect the position of crop-rows, a method based on Hough transform and connected component labeling was put forward. First, a true color image of field crops was processed with gray histogram and OSTU respectively. Then the noises in the image were eliminated by means of eight connected component labeling according to their areas. The centroid coordinates of each labeled crop were computed after the second labeling, through which the center line of the crop-row was regressed by Hough transform. Experimental results show that the method is effective.

该方法分别用直方图法和最大类间方差法二值化图像后，经过8连通区域标记后据其面积属性去除噪声，然后再经一次标记后找出各标记作物的重心点坐标，最后通过Hough变换检测过重心点的直线，即到得到过作物行的中心线，试验结果表明了该方法的有效性。

First of all two-dimensional bar code of the positioning and segmentation algorithm using Hough Transform and Sobel edge detection of the bar code images collected from the original image to effectively separate and then analyzes the barcode image through the optical system of the noise model, put forward a Calculation of point spread function of standard deviation of the algorithm uses Flourier transform adaptively select the threshold to remove noise caused by invalid border, bar code and thus be the basic module.

首先探讨了二维条码的定位与分割算法，利用Hough变换与Sobel边缘检测把条码图像从原始采集的图像中有效地分割出来然后分析了条码图像经过光学系统的噪声模型，提出了一种计算点扩展函数标准方差的算法采用Flourier变换自适应地选取阈值去除噪声导致的无效边界，从而得到条码的基本模块。

The program can right image wavelet transform, high-pass filter, low-pass filtering and inverse transform.

该程序可以对图像进行小波变换、高通滤波、低通滤波以及逆变换。

Better used to transform the two-dimensional geometry of understanding, such as translation, rotation, zooming, and the master sequence transform matrix of usage.

详细说明：加深对常用的二维几何变换的了解，如平移，旋转，放大缩小等，掌握变换顺序和变换矩阵的用法。

Strange feeling will arise when audiences take pleasure in western modernist paintings by its transform, and it extends the capability of appreciation of the beautiful in audience. The later paintings absorb form feature of transform and express verier society more vividly.

变形引发观者欣赏中的陌生感，扩大了欣赏者的审美视野；后世绘画吸收了现代派绘画变形的形式特征，并加入了更为贴近社会现实的内容。

The algorithm suppresses background and enhances targes by morphological Tophat transform in spatial, and the image sequences are processed with the 1-D wavelet transform in order to separate the target from background in temporal.

在空域上，通过灰度形态学Tophat变换抑制背景、增强目标；在时域上，对红外图像序列连续四帧进行沿时间轴一维小波变换，实现目标和背景的分离。

On the basis of taking full advantage of multi scale wavelet analysis,the proposed algorithm improves the contrast of the approximations of the wavelet transform through two lifting steps,and shrinkages the coefficients of wavelet transform on the diferent degree and then enhances the coefficients.

在多尺度分析基础上，该算法对小渡分解得到的低频子带图像采用两步提升法进行对比度增强处理，而对小波分解得到的不同方向上的小波系数进行不同程度的去噪并增强。

But also to geometric attacks such as cropping and rescaling, etc. Particularly, geometric transform such as translate, affine transform and rotation is always a difficulty for watermarking because these transforms change the position of image pixels.

特别是对于平移、旋转和仿射变换这一类的几何变换，由于造成了图像像素位置改变从而使得水印的提取极为困难，一直都是水印算法的难点。

As the first innovative option, the weights are important to the gray value transform in the image process, and a weighting method of the gray value transform is putout by the author.

成像系统标定是机器视觉测量系统所成图像和实际被测尺寸之间实现高精度转换的关键过程。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。