Description: 设计最小二乘逆滤波器求解反卷积问题,假设有观测噪声,为降低观测噪声的影响，可采用预白化方法,设计长度N=50的最小平方FIR逆滤波器-inverse filter design for least squares deconvolution, the assumption that the measurement noise, To reduce the impact of noise and possible pre-whitening method, the length N = 50 the minimum inverse square FIR filter Platform: |
Size: 26624 |
Author:吴森泉 |
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Description: 本程序可实现图像平滑，其主要目的是为了减少噪声。本程序中，我们首先对图像加了一个较大的白噪声，之后用中值对含噪图像进行处理。-This procedure can realize smooth image, and its main purpose is to reduce the noise. This procedure, we first added a larger image of the white noise, followed by in the value of the deal with noisy images. Platform: |
Size: 4096 |
Author:崔以田 |
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Description: 基于循环前缀的同步算法仿真，采用多符号求均值的办法减少噪声影响。-Cyclic prefix based synchronization algorithm simulation, the use of multi-symbol mean seeking ways to reduce noise impact. Platform: |
Size: 4534272 |
Author:herry |
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Description: 用Matlab编写的小波去噪
估计对大家有用，喜欢的就下载吧-Prepared using Matlab wavelet denoising estimated useful for all of us, like on the download bar Platform: |
Size: 1024 |
Author:董艳 |
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Description: 为了减小传统的反锐化掩模算法对噪声的敏感性，提出了一种新的反锐化掩模图像
增强算法，该算法在图像的平坦区域进行去噪处理，并依据人眼视觉特性对图像的不同细节
区域做不同程度的增强。通过几种算法的实验结果比较，表明本算法不仅增强效果较好，且
抑制了噪声的增强。-In order to reduce the traditional unsharp masking algorithm sensitivity to noise, a new Unsharp Masking image enhancement algorithm in image denoising, flat region to deal with, and based on human visual characteristics details on the different image regions enhanced to varying degrees do. Algorithm in several experimental results, indicating that not only enhance the effectiveness of this algorithm is better, and enhanced noise suppression. Platform: |
Size: 270336 |
Author:王瑜 |
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Description: The purpose of this project is to create a different system for processing voice signals and from which we draw useful conclusions about these brands.
More specifically, the system will first filter the voice signal with a pass bandwidth (chebyshev probably type 2) to reduce the presence of noise in it and then we can calculate:
• what limits the signal word out (segmentation)
• how are these words
• the characteristic frequency of the voice of the speaker of each file (voice pitch). -The purpose of this project is to create a different system for processing voice signals and from which we draw useful conclusions about these brands.
More specifically, the system will first filter the voice signal with a pass bandwidth (chebyshev probably type 2) to reduce the presence of noise in it and then we can calculate:
• what limits the signal word out (segmentation)
• how are these words
• the characteristic frequency of the voice of the speaker of each file (voice pitch). Platform: |
Size: 2048 |
Author:Pastel87 |
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Description: Presently FFT usage in GPS receivers has been a
topic of extensive study and many improved FFT-based
acquisition methods with averaging correlation
technique also have emerged. Although averaging
arithmetic can reduce the instant processing points of
FFT/IFFT, their noise performance is not promising. In
this paper a novel compress-sampling algorithm for
FFT-base GPS signal acquisition method is proposed.
It not only diminishes the size of FFT/IFFT core but
also enhances the noise immunity of receiver with its
“redundancy” structure. Simulation results of Matlab
testify that the computational complexity of the novel
algorithm has been efficiently suppressed to only
0.93 over the 2D search method in time domain. At
the same time the lower amplitude threshold obtained
from the novel method gets a lower false alarm
probability comparing with the direct DFT algorithm
with no compression. The noise immunity is enhanced-Presently FFT usage in GPS receivers has been a
topic of extensive study and many improved FFT-based
acquisition methods with averaging correlation
technique also have emerged. Although averaging
arithmetic can reduce the instant processing points of
FFT/IFFT, their noise performance is not promising. In
this paper a novel compress-sampling algorithm for
FFT-base GPS signal acquisition method is proposed.
It not only diminishes the size of FFT/IFFT core but
also enhances the noise immunity of receiver with its
“redundancy” structure. Simulation results of Matlab
testify that the computational complexity of the novel
algorithm has been efficiently suppressed to only
0.93 over the 2D search method in time domain. At
the same time the lower amplitude threshold obtained
from the novel method gets a lower false alarm
probability comparing with the direct DFT algorithm
with no compression. The noise immunity is enhanced Platform: |
Size: 254976 |
Author:zohreh |
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Description: 差影法实际是对图像进行代数运算的一种不同的叫法。代数运算是指对两幅输入图像进行点对点的加、减、乘、除计算而得到输出图像的运算。
图像相加的一个重要应用就是对同一场景的多幅图像求平均值，它可以有效地降低随机噪声的影响，这是因为对于一幅有噪声的图像S（x，y），可以看成是由原始无噪声的图像F（x，y）和噪声G（x，y）叠加而成的，即
S（x，y）=G（x，y）+F（x，y）
-Poor shadow method is actually an image algebra in a different name for. Algebra refers to the two input images point to point add, subtract, multiply, in addition to the calculation obtained computing the output image. An important application of the image is the sum of the same scene multiple images averaged, it can effectively reduce the impact of random noise, it is because for a noisy image S (x, y), can be seen as by the original noise-free images F (x, y) and noise G (x, y) stacking, that is, S (x, y) = G (x, y)+ F (x, y) Platform: |
Size: 392192 |
Author:caocao |
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Description: Image Edge Enhancing Coherence Filter Toolbox，各向异性非线性扩散滤波器-This toolbox will perform Anisotropic Non-Linear Diffusion filtering on a 2D gray/color or 3D image. This filtering will reduce the image noise while preserving the region edges, and also enhancing the edges by smoothing along them.
This is one of the more advanced image enhancement methods available, and also contains HDCS from october 2009. The result looks like an artist painted the image, with clear brush strokes along the image edges and ridges, see screen-shot.
Platform: |
Size: 1437696 |
Author:陈翼男 |
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Description: TD-SCDMA系统联合检测中的信道估计、信道估计后处理、信道估计串行干扰消除后处理算法的源代码。其中，信道估计采用频域快速FFT法以减少运算量；后处理采用激活窗检测法，只保留激活用户的多径信息，其余置0，以达到降低干扰及噪声的目的；串行干扰消除可以消除多小区信道估计的干扰，以得到本小区的纯净信道估计结果。-TD-SCDMA system, joint detection of channel estimation, channel estimation and post-processing, channel estimation and post-processing the serial interference cancellation algorithm source code. Among them, frequency-domain channel estimation using fast FFT method to reduce computational complexity post-processing detection method used to activate windows, leaving only the active user' s multi-path information, the remaining set 0, in order to achieve the purpose of reducing interference and noise serial interference cancellation can be Multi-cell channel estimation to eliminate the interference in order to get the purity of the cell channel estimation result. Platform: |
Size: 5120 |
Author:梦 |
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Description: 为了减少边缘检测中的噪声影响,设计了一种分数阶差分滤波器,给出了该滤波器的原理,分析了此类滤波器的幅频特性.-In order to reduce the effect of the noise in edge detection,a kind of fractional-order difference filters were designed,whose theory was worked out and amplitude-frequency characteristic were analyzed. Platform: |
Size: 291840 |
Author:小甜瓜 |
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Description: 语音的预加重和去加重，进行语音的前期处理，减少噪声。-Voice of the pre-emphasis and de-emphasis, voice of the pre-processing to reduce noise. Platform: |
Size: 5120 |
Author:mengxiangai |
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Description: THIS MATLAB CODE REDUCE THE SPECKLE NOISE IN SAR IMAGE, IT USE WAVELET FILTER THEN USED CASCADE THREE FILTERS IN TIME DOMAIN
(HYBRID TIME AND FREQUENCY DOMAIN).
THIS CODE NEED SOME MODIFICATIONS SINCE THERE ARE SOME PROBLEMS LIKE BY COMPUTE PSNR AND THE WAVELET HAS SOME ERRORS IN COMPUTE THE DE-NOISING Platform: |
Size: 1214464 |
Author:same |
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Description: matlab code for to reduce noise on image - median filter, mean filter, maximum filterm, hybrid median filter, etc Platform: |
Size: 4096 |
Author:Jiyoung Park |
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Description: hi this a program by matlab for reduce noise in images-hi this is a program by matlab for reduce noise in images Platform: |
Size: 1024 |
Author:ali |
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Search - reduce noise matlab