Description: 用dft计算图像的功率谱，希望对opencv的新手有帮助-DFT calculation using the power spectrum image, and they hope to have opencv assist novice Platform: |
Size: 95232 |
Author:yinxin |
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Description: 基于OpenCV的源码， 实现了利用DFT离散傅里叶变换计算图像的功率谱。-OpenCV based on the source, the use of implementation of the Discrete Fourier Transform DFT calculation of the power spectrum image. Platform: |
Size: 99328 |
Author:无梦 |
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Description: The radially averaged power spectrum (RAPS) is the direction-independent mean spectrum, i.e. the average of all possible directional power spectra. This function computes and plots the RAPS of an input image. The function was written to produce the RAPS for square weather radar reflectivity images so you will have to relabel the plot axes and title to suit your needs. The radially averaged power spectrum provides a convenient means to view and compare information contained in 2D spectra in 1D Platform: |
Size: 1024 |
Author:mid |
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Description: 利用opencv编写的一段用DFT计算图像的功率谱的程序代码-Opencv prepared using DFT calculation using a section of the power spectrum image of the program code Platform: |
Size: 95232 |
Author:xuefengathena |
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Description: 将源码中的地址目录改成所要分析的数据（数据可以使txt格式的），在MATLAB中运行就可以分析出数据的时域和频域图像，自相关互相关函数，以及功率谱图像-The source address in the directory into which to analyze the data (data can txt format), run in MATLAB can analyze the data in time domain and frequency domain image, from the relevant cross-correlation function, and the power spectrum image Platform: |
Size: 3072 |
Author:zhanglong |
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Description: 周期高斯一介导、高斯二介导即高斯脉冲（即UWB信号）的功率谱图像，对应不同的占空比和不同的脉冲形式，随着阶数的增加中心频率右移，频谱也为高斯形式，且随着周期数增多，呈现线谱形式-Cycle Gaussian ordinary derivative, ie the Gaussian two-mediated Gaussian pulse (the UWB signal) of the power spectrum image, corresponding to different pulse duty cycle and a different form, with the increase of the order of the center frequency shifted to the right, the spectrum also Gaussian form, and with the number of cycles increased, showing the form of line spectrum Platform: |
Size: 5120 |
Author:周玉佳 |
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Description: 5/10/15/20阶的语音信号LPC 预测及其功率谱，并绘制误差函数图像-5/10/15/20 LPC prediction order of the voice signal and the power spectrum, and the mapping of the image error function Platform: |
Size: 1024 |
Author:谢杰 |
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Description: 该算法是通过计算图像功率谱大小来评价图像的清晰度。清晰的图像功率谱大于模糊图像的功率谱。-The algorithm is derived by calculating the size of the image power spectrum to evaluate the clarity of the image. Clear image power spectrum is greater than the power spectrum of blurred image. Platform: |
Size: 1024 |
Author:焦慧娟 |
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Description: 利用Matlab软件平台对JTC进行了图像识别仿真实验，得到了二维及三维相关输出图像，显示出尖锐的相关峰。仿真实验表明：联合变换进行图像识别中存在强烈的零级干扰，干扰信号是有用信号的7.14倍，输出结果不理想；采用功率谱相减法可以消除零级强干扰，进而提高了图像的识别能力。-Simulations of joint transform correlator (JTC) using Matlab is implemented, and the 2-D and 3-D drawings of the correlation image are obtained. In the simulation experiments, the sharper correlation peaks are showed. The result shows that strong disturbance of zero rank exists in the simulation of JTC, and it is 7.14 times stronger than the useful signal thus, the power spectrum subtraction is used to eliminate the strong disturbance, and the capacity of image recognition is improved. Platform: |
Size: 741376 |
Author:zhanghao |
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Description: 将原图像看做是自相关及其功率谱是各向同性的一阶马尔可夫过程,采用基于方向微分的运动模糊方向鉴别方法，对运动模糊图像进行方向性的高通滤波(方向微分),当滤波方向为运动模糊方向时 ,由于此方向模糊图像对应的高频成分最少,高通滤波(方向微分)使模糊图像能量损失最大,得到的微分图像灰度值（双线性插值）之和必然最小.所以方向微分得到的图像灰度值之和中的最小值对应的方向即为运动模糊的方向-The original image as is the autocorrelation and power spectrum is isotropic first-order Markov process, the use of motion blur based on the direction of the direction of the differential method of identifying the direction of motion blurred images of high-pass filter (the direction of derivative) When the filter direction is the direction of motion blur, due to the blurred image corresponding to the direction of high frequency components at least, high pass filter (the direction of derivative) to the maximum energy loss of blurred images, the resulting differential image intensity value (bilinear interpolation) of and the inevitable minimum. So the direction of differential image intensity values obtained and the minimum in the corresponding direction is the direction of motion blur Platform: |
Size: 29696 |
Author:ouyangsir |
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Description: BMP图像处理程序，包括模拟信道产生的高斯加性噪声；图像灰度变换；图像的拉普拉斯边缘提取；中点滤波法的debluring；图像线性模糊。
图形显示函数，包括DDA方法画直线；中点裁剪法；liang-barsky算法的窗口裁剪；种子填充算法；
随机信号处理程序，包括产生正态分布、均匀分布样本；计算其均值与方差；各样本的概率分布直方图分析；功率谱分析；样本叠加的PSD分布分析。-BMP image processing procedures, including analog channel noise generated by high-Alaska image intensity transformation image Laplacian edge detection midpoint of the filtering method debluring image linear blur. Graphics functions, including DDA method to draw lines the mid-point cutting method liang-barsky clipping window algorithm seed filling algorithm random signal processing procedures, including the generation of normal distribution, uniform distribution of samples calculate the mean and variance the sample histogram analysis of the probability distribution power spectrum analysis sample stacking PSD distribution analysis. Platform: |
Size: 8192 |
Author:漢漢哥 |
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Description: 对功率谱的估计，可对图像，语音等多媒体文件进行功率谱计算后进行特征提取-Of the power spectrum estimate, the image, voice and other multimedia files after calculating the power spectrum feature extraction Platform: |
Size: 1024 |
Author:whxu |
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Description: 这个程序实现了逐帧计算视频图像中的功率谱变化频率，从而可以提取出其中的某些周期性分量。-This process achieved a per-frame video image of the changes in the power spectrum frequency, wherein some of the periodic component which can be extracted. Platform: |
Size: 1024 |
Author:薛员 |
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Description: 应用傅立叶变换对图像处理，实现查看图像的功率谱，以及功率谱经过巴特沃斯高通、低通和高斯高通、低通滤波器后图像的功率谱，再把功率谱还原为图像的功能。-Fourier transform for image processing, see the image of the power spectrum, and the power spectrum after Butterworth high-pass, low-pass and high-pass Gaussian low-pass filter of the image after power spectrum, and then restore the power spectrum of the image. Platform: |
Size: 169984 |
Author:houtian |
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Description: Runway detection using various fetaures.They are as follows Haralick feature,Basic features,Zernike moments,Circular-Mellin features,Fourier power spectrum,Gabor filters Platform: |
Size: 89088 |
Author:pavi |
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Description: 对信号直接进行功率谱分析（PSD），基于Welch方法。得到的功率谱密度以图像显示。-Direct signal power spectrum analysis (PSD), based on Welch method. Power spectral density of the obtained image is displayed. Platform: |
Size: 99328 |
Author:寇家庆 |
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