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Description: 用函数butter、cheby1、cheby2得到Butterworth和Chebyshev滤波器，用函数filter进行滤波。-Polar coordinate transformation, can be used for image template matching, can also be used for video tracking algorithm
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Author: 清清 |
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Description: 这是用切比雪夫实现的IIR带通滤波器，可用于数字图像或语音的处理-This is achieved using Chebyshev IIR bandpass filter, can be used for processing digital image or voice
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Author: 周一 |
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Description: ：根据小波低频子带图像的轮廓模糊度和高频子带图像的细节信息量随小波分解层数增多而增多的规律，从图像熵
出发，提出了一种基于低频子带图像熵差的最佳小波分解层数选择法, 该方法通过计算不同分解层数下各低频子带的图像
熵差，选择最接近原始图像熵差的分解层数作为最佳分解层数。用多种基于小波变换的图像融合法分别对两组医学图像进
行仿真实验，结果表明根据该分解层数选择法得到的融合图像目视效果最好，与相关系数、峰值信噪比、模糊Chebyshev 距离
值等客观评价指标保持了很好的一致性。
-Abstract：According to the law that the contour fuzziness of the low-frequency sub-band and the detail information of the high-frequency
sub-band increase with the growth of the wavelet decomposition levels, an effect selection method of the optimal decomposition level is
proposed. Firstly, the difference of original image entropy is calculated. Then, the differences of the low-frequency sub-image entropy
based on different decomposition level are calculated. Finally, the decomposition level which makes the difference of the low-frequency
sub-image entropy closest to the difference of original image entropy is found. This level is the optimal decomposition level. To fuse
two groups of medical images, simulation experiments are done by use of the wavelet transform and the PCA transform based on wavelet.
The experimental result indicates that the fusion image used by the proposed method has the best subjective feeling of human being, and
it has very good compatibility to objective
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Size: 160768 |
Author: 杨颜华 |
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Description: Fast computation of Tchebichef moments for
binary and gray-scale images
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Size: 2380800 |
Author: boulemkhali |
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Description: Image description with Chebyshev Fourier
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Size: 769024 |
Author: boulemkhali |
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Description: chebyshev statistics calculation of an image
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Author: thvalizadeh |
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Description: 本程序实现基于混沌的图像加密标准算法 ，基于Chebyshev 映射，通过迭代产生模拟混沌序列，用此序列进行加密。-This program realization based on chaotic image encryption standard algorithm, based on Chebyshev maps, through the iterative produce simulation chaotic sequences, with this series encryption.
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Author: by |
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Description: 主要包括滤波器的相关知识及仿真软件MATLAB的相关知识。如巴特沃斯（Butterworth）滤波器、切比雪夫（Chebyshev）滤波器、椭圆（Ellips）滤波器、贝塞尔（Bessel）滤波器.模拟低通滤波器系统函数确定模拟高通滤波器系统函数的方法-Mainly includes filter related knowledge and simulation software MATLAB related knowledge. Such as Butterworth (Butterworth) filter, Chebyshev (Chebyshev) filter, elliptical (Ellips) filter, Bessel (Bessel) filter. Simulation low-pass filter system function determine simulation high-pass filter system function method
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Size: 56320 |
Author: liuliu |
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Description: 为了提高图像加密算法的鲁棒性，提出了一种新的自适应图像加密算法。首先，把任意大小的灰度或彩
色图像分成2 × 2 子块 然后，用左上角子块的像素灰度值和Chebyshev 混沌映射构造与右上角子块等大的矩阵，用该
矩阵对右上角子块进行像素灰度值替换 最后，按顺时针对每个子块进行加密，直到左上角子块加密完毕。该算法不
依赖于图像的大小，而且适用于灰度图像和彩色图像，因而有很强的鲁棒性。同时灰度值扩散机制的引入使得该算
法具有良好的扩散性和扰乱性。-This paper presented a new self-adaptive image encryption algorithm so as to improve its robustness． Under
this algorithm， a gray image or color image was divided into 2 × 2 size blocks． A corresponding size of matrix in the top right
corner was created by the pixel gray-scale value of the top left corner under Chebyshev mapping． The gray-scale value of the
top right corner block was then replaced by the matrix created before． The remaining blocks were encrypted in the same
manner in clockwise until the top left corner block was finally encrypted． This algorithm is not restricted to the size of image
and it is suitable to gray images and color images， which leads to better robustness． Meanwhile， the introduction of gray-scale
value diffusion system equips this algorithm with powerful function of diffusion and disturbance．
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Author: wangc |
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Description: 背景建模是实现运动目标检测与跟踪的关键技术之一。在实时视频监控系统中，对背景建模算法的运行时间及所提取出的背景图像的实时性有很高的要求，针对这一问题，提出了一种基于切比雪夫不等式的自适应阈值背景建模算法。算法利用切比雪夫不等式计算像素点色度变化的概率估计值，提出了一种自适应阈值分类方法，它将像素点快速分类为前景点、背景点及可疑点，再利用核密度估计方法对可疑点进行进一步分类，最后利用背景更新算法提取实时背景图像。实验结果证明，该算法能快速有效地区分特征明显的背景点与前景点，提高了背景图像提取的速度，对可疑点利用核密度估计方法降低了背景分割的误差，背景建模效果理想，运算速度快，适用于实时视频监控系统。-Background modeling is a key technology to realize the moving target detection and tracking. In real-time video surveillance system, there are high demands on uptime and background modeling algorithm is proposed to remove the background image in real time, for this problem, a Chebyshev inequality based on adaptive threshold background modeling algorithm. Cut algorithm uses to calculate the probability of Chebyshev inequality pixel color change estimates, an adaptive threshold classification method, it will be classified as pre-fast pixel of interest, background points and suspicious points, re-use kernel density estimation method suspicious point for further classification. Finally, background updating algorithm to extract real-time background image. Experimental results show that the algorithm can quickly and efficiently in the background of significant features of the region of interest with the previous point, improving the speed of extraction of the background image, the point of s
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Description: 无边活动轮廓模型(C-V模型)是水平集分割方法中的一种经典模型.传统的无边活动轮廓模型将灰度同质作为区域分割准则,这使其对于仅含两个同质区域且灰度变化不大的图像能够取得很好的分割效果,但对灰度渐变图像分割时,该模型往往无法得到正确结果.本文针对这一问题,通过引入Chebyshev距离构造一种新的相似度,以此来表征演化曲线内外灰度差异,修改了传统无边活动轮廓模型中均值取值的定义,使得演化曲线在图像灰度变化缓慢区域获得较大的驱动力.新模型克服了传统无边活动轮廓模型不能正确分割灰度渐变图像的不足.实验对比及分析表明,新模型能够更准确地分割灰度渐变图像,同时对噪声有一定的鲁棒性.
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Boundless active contour model (CV model) is the level set segmentation method in a classical model of traditional active contour model endless gray homogeneous region segmentation as a criterion for making it with only two homogeneous regions and gray little change in image segmentation can achieve good results, but gray gradient image segmentation, the model often can not get the correct results.
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Author: yangs |
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Description: 最大似然（ML）准则和最大后验概率（MAP）准则，flMTGkv参数相控阵天线的方向图（切比雪夫加权），仿真图是速度、距离、幅度三维图像，有信道编码，调制，信道估计等，PIoMQKB条件相关分析过程的matlab方法，仿真效果非常好。- Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, flMTGkv parameter Phased array antenna pattern (Chebyshev weights), FIG simulation speed, distance, amplitude three-dimensional image, Channel coding, modulation, channel estimation, PIoMQKB condition Correlation analysis process matlab method, Simulation of the effect is very good.
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Author: xxedjx |
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Description: 主要是基于mtlab的程序，重要参数的提取，分析了该信号的时域、频域、倒谱，循环谱等,相控阵天线的方向图（切比雪夫加权），是一种双隐层反向传播神经网络，粒子图像分割及匹配均为自行编制的子例程。- Mainly based on the mtlab procedures, Extract important parameters, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Phased array antenna pattern (Chebyshev weights), Is a two hidden layer back propagation neural network, Particle image segmentation and matching subroutines themselves are prepared.
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Size: 7168 |
Author: iiwwvm |
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Description: 旋转机械二维全息谱计算，包括调制，解调，信噪比计算，相控阵天线的方向图（切比雪夫加权），虚拟力的无线传感网络覆盖，粒子图像分割及匹配均为自行编制的子例程，有CDF三角函数曲线/三维曲线图。- Rotating machinery 2-d holographic spectrum calculation, Includes the modulation, demodulation, signal to noise ratio calculation, Phased array antenna pattern (Chebyshev weights), Virtual power wireless sensor network coverage, Particle image segmentation and matching subroutines themselves are prepared, There CDF trigonometric curve/3D graphs.
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Author: midkrm |
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Description: 多目标跟踪的粒子滤波器，调试通过可以使用，可以实现模式识别领域的数据的分类及回归，仿真图是速度、距离、幅度三维图像，相控阵天线的方向图（切比雪夫加权），欢迎大家下载学习。- Multi-target tracking particle filter, Debugging can be used, You can achieve data classification and regression pattern recognition, FIG simulation speed, distance, amplitude three-dimensional image, Phased array antenna pattern (Chebyshev weights), Welcome to download the study.
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Author: mgtepg |
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Description: 相控阵天线的方向图（切比雪夫加权），毕业设计有用，仿真效率很高的，包含位置式PID算法、积分分离式PID，在MATLAB中求图像纹理特征，滤波求和方式实现宽带波束形成。- Phased array antenna pattern (Chebyshev weights), Graduation useful High simulation efficiency, It contains positional PID algorithm, integral separate PID, In the MATLAB image texture feature, Filtering summation way broadband beamforming.
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Size: 7168 |
Author: dvpmmm |
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Description: 实现串口的数据采集，粒子图像分割及匹配均为自行编制的子例程，MIMO OFDM matlab仿真,基于chebyshev的水声信号分析，仿真效率很高的，多姿态，多角度，有不同光照,LDPC码的完整的编译码，相参脉冲串复调制信号。- Achieve serial data acquisition, Particle image segmentation and matching subroutines themselves are prepared, MIMO OFDM matlab simulation, Based chebyshev underwater acoustic signal analysis, High simulation efficiency, Much posture, multi-angle, have different light, Complete codec LDPC code, Complex modulation coherent pulse train signal.
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Author: uuyuick |
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Description: 粒子图像分割及匹配均为自行编制的子例程，有CDF三角函数曲线/三维曲线图，用于信号特征提取、信号消噪，基于chebyshev的水声信号分析，表示出两帧图像间各个像素点的相对情况，大学数值分析算法，包含特征值与特征向量的提取、训练样本以及最后的识别。-Particle image segmentation and matching subroutines themselves are prepared, There CDF trigonometric curve/3D graphs, For feature extraction, signal de-noising, Based chebyshev underwater acoustic signal analysis, Between two images showing the relative circumstances of each pixel, University of numerical analysis algorithms, Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition.
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Author: tigpqbua |
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Description: 现代信号处理中谱估计在matlab中的使用，包括脚本文件和函数文件形式，加入重复控制，对HARQ系统的吞吐量分析，粒子图像分割及匹配均为自行编制的子例程，基于chebyshev的水声信号分析，解耦，恢复原信号，包括回归分析和概率统计。- Modern signal processing used in the spectral estimation in matlab, Including script files and function files in the form, Join repetitive control, HARQ throughput analysis of the system, Particle image segmentation and matching subroutines themselves are prepared, Based chebyshev underwater acoustic signal analysis, Decoupling, restore the original signal, Including regression analysis and probability and statistics.
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Size: 8192 |
Author: gjnpbj |
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Description: 相控阵天线的方向图（切比雪夫加权），用于时频分析算法，在MATLAB中求图像纹理特征，GSM中GMSK调制信号的产生，均值便宜跟踪的示例，单径或多径瑞利衰落信道仿真。- Phased array antenna pattern (Chebyshev weights), For time-frequency analysis algorithm, In the MATLAB image texture feature, GSM is GMSK modulation signal generation, Example tracking mean cheap, Single path or multipath Rayleigh fading channel simulation.
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Author: fvkiyf |
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