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Application_study_of_wavelet_analysis_on_ultrasoni
说明: :在深海采矿环境中超声波传输介质里存在着大量气泡、扰动沉积物、机械噪声等背景噪声与混响,导致有用信号与高
噪声信号迭加在一起,严重影响了测距精度。采用小波分析方法将超声回波信号进行3层小波分解,适当设置门限阈值对小波
系数进行处理,然后对信号进行重构,有效地抑制了信号中噪声对测量精度的影响。研究结果表明:小波方法有很好的降低回
波信号中噪声的效果,其测距精度高于自适应滤波去噪后的测距精度。(There are much background and mixture noise in the course of ultrasonic wave transmission under deep
sea mining environment,such as air bubbles and disturbed sediment and mechanical noise.Because of these factors,
the useful signals and the high noise signals are combined together,which seriously affects the distance measurement
precision.Ultrasonic echo signals are decomposed into three layer wavelets,and a threshold is set to process the
wavelet coeficients.Then the signals are reconstructed.Accordingly the influence of environment noise on distance
measurement precision is effectively restrained.Research resuhs indicate that wavelet transform method is very useful
for noise reduction in signals.Its precision is higher than that of the adaptive filtering method.)
- 2010-04-24 08:14:49下载
- 积分:1
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tvdenoise
超声医学图像去噪代码,用TV法实现偏微分方程去除斑点噪声(Ultrasonic medical image denoising code, with TV method to achieve partial differential equations to remove speckle noise)
- 2008-01-15 15:13:18下载
- 积分:1
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CoSaMP-and-OMP-for-sparse-recovery_OK
Examples with Orthogonal Matching Pursuit and Compressive Sampling Matching Pursuit
- 2012-12-06 09:22:30下载
- 积分:1
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MutualInfo
通过高斯核密度估计计算多元变量之间的互信息熵(The mutual information entropy between multivariate variables is calculated by Gaussian kernel density estimation)
- 2017-03-08 16:22:21下载
- 积分:1
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GMM
本代码建立高斯混合模型(高斯多模型)(GMM),将其用于计算机视觉领域的视频目标检测/视频监控/运动检测/运动目标检测/视频目标跟踪等相关应用中。(This code sets up Gaussian mixture model(Gaussion Mixture Model, GMM) with image sequences for the research and application field of computer vision, using GMM for visual object detection(video object detection), visual surveillance, motion detection, motion tracking, visual object tracking, video object tracking, etc.)
- 2011-01-14 10:21:54下载
- 积分:1
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KPCAandPCA
含有pca和kpca算法,具有很好的在图像处理方面的应用(contain pca and kpca algorithm, is very good in image processing the application)
- 2006-08-26 23:02:05下载
- 积分:1
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Mirror_DImageProcess
这个实例就像一个魔镜一样,能把原始图像照出各种变换效果,是基于MFC的多文档应用程序(This example is like a mirror,which can convert original image according to a variety of effects)
- 2013-11-29 16:23:24下载
- 积分:1
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edge_detector
Roberts算子,Prewitt算子,Sobel算子,Marr算子,Canny算子之一对输入图像
实现边缘检测,输出边缘图像并与matlab自带函数实现进行对比(Roberts operator, Prewitt operator, Sobel operator, Marr operator, Canny operator to achieve one of the input image edge detection, the output edge image and bring their own matlab function compared)
- 2009-04-28 20:05:16下载
- 积分:1
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Detecter_and_Color segmetation
实现给定图像中目标的有效监测,并根据颜色对目标分割。(The object can be detector, and it is segmented by the color.)
- 2020-06-19 08:40:01下载
- 积分:1
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fcm-evlo
用于图像分割,基于fcm算法的图像分割,实现模糊均值聚类的分割,更准却的实现分割。(For image segmentation, image segmentation based on FCM algorithm, the realization of fuzzy clustering segmentation, more accurate but to achieve segmentation.)
- 2014-11-21 10:31:43下载
- 积分:1