软阈值,soft threshold
1)soft threshold软阈值
1.A algorithm and application of wavelet mark image denoising based on soft threshold;基于软阈值小波痕迹图像去噪算法及应用
2.This method combined the advantages of median filter and soft threshold process of wavelet sub-band coefficients.本文提出了一种新的去除斑点噪声的方法,这种方法结合中值滤波和多尺度非线性小波软阈值的优点,首先把原图像进行对数转换,然后把对数转换后的图像进行中值滤波处理,从而把转换后的图像分成两部分,对每一部分进行小波分析,假设小波系数服从广义高斯分布(GGD),利用小波系数的统计特性估计出各个部分各个尺度的阈值,最后用软阈值方法对上述两部分分别去噪。
3.Focused on the problems of narrow gradation sector,fuzzy flaw edge,many image noise,the flaw characteristics were submerged sometimes for material X-ray inspection,a method of wavelet image enhancement based on soft threshold was advanced.针对X射线检测复合材料原始图像具有灰度区间窄、缺陷边缘模糊、图像噪声多、缺陷特征有时被淹没的特点,文中提出了一种基于软阈值的小波图像增强方法,图像经过小波分解后可以得到一系列不同尺度上的子带图像,在不同尺度的子带图像上进行基于软阈值滤波的细节系数增强,再进行图像重构,即可得到增强后的X射线检测图像。
英文短句/例句

1.Wavelet denoising to estimate the soft-threshold based on iterative methods基于迭代方法的软阈值估计小波去噪
2.Medical Image Denoising Based on Wavelet Soft Threshold Filting基于小波软阈值滤波的医学图像去噪
3.The wavelet soft-threshold denoising method can reduce the interference effectively.采用软阈值小波降噪法可有效减小干扰。
4.New soft-threshold algorithm applying on telepresence改进型软阈值算法在临场感系统中应用研究
5.Research on the Validity of Wavelet Soft-threshold Filtering in Signal De-noising小波软阈值滤波在信号去噪中的有效性研究
6.Image Semi-soft Threshold Denoising Method Based on Improved Ridgelet Transform改进的脊波变换图像半软阈值降噪方法
7.Parameters' algorithm of semisoft shrinkage based on wavelet transforms基于小波变换的半软阈值参数算法研究
8.Signal-to-noise ratio of cylinder head vibration signal was enhanced by using wavelet's soft threshold value de-noising method.用小波软阈值降噪的方法提高了柴油机缸盖振动信号的信噪比。
9.Study on wavelet-based soft-thresholding deblocking algorithm for low bit rate video低码率视频的小波域软阈值去方块滤波算法的研究
10.The application of de noising by soft thresholding on wavelet transform to ultrasonic detection echo is discussed.研究小波变换软阈值去噪方法在超声检测回波处理中的应用。
11.Study of flood forecast based on wavelet soft-threshold technology and ANN小波软阈值技术和人工神经网络在洪水预报中的研究
12.A Study to Wavelet Soft-Thresholding Algorithm with Application to SAR Image De-Noising;小波软阈值算法在SAR图像去噪处理中的应用研究
13.Application of wavelet soft-threshold de-noising and GRNN in monthly load forecasting小波软阈值去噪和GRNN网络在月度负荷预测中的应用
14.Spectral Characteristics of Laser Ablation Threshold of Soft Biological Tissue;生物软组织激光消融阈值的光谱特性
15.The three means of constraint, acquiescent threshold value, and given soft/hard threshold value were used to eliminate signal noise.其消噪处理有强制、默认阈值和给定软/硬阈值3种方法。
16.Analysis of Threshold Voltage and Magic Number Based on the Software of WAT Analyzer基于WAT Analyzer软件的阈值电压计算及magic number测定
17.One Kind Based on Improvement Soft and Hard threshold Value Compromised Method Denoising Research一种基于改进的软硬阈值折衷法的去噪研究
18.A Image Denoising Improved Method Between Soft and Hard Adaptive Thresholding Based on Curvelet Transform改进的自适应阈值软硬折中Curvelet图像去噪技术
相关短句/例句

soft-threshold软阈值
1.Power quality disturbance signals de-noising based on improved soft-threshold method;基于改进软阈值法的电能质量扰动信号去噪
2.Denoising by wavelet soft-thresholding in fault analysis;故障分析中的小波软阈值改进除噪方法
3.Wavelet denoising to estimate the soft-threshold based on iterative methods基于迭代方法的软阈值估计小波去噪
3)soft-thresholding软阈值
1.So maximum modules and soft-thresholding are proposed.通过对多尺度下信号的小波变换系数及模极大值的跟踪,发现有用信号为平稳信号,而干扰信号的模极大值并不都随尺度的增加而减少,因此提出模极大值与软阈值相结合的方法。
2.Wavelet transformation technique is applied to SAR image de-noising based on careful analysis of Donoho wavelet soft-thresholding method.在详细分析了Donoho小波软阈值的基础上 ,应用小波变换技术对SAR图像进行分析处理 。
4)soft thresholding软阈值
1.Based on the noise in the complex interferograms satisfying an additive noise model,a noise reduction scheme using wavelet packet soft thresholding method to respectively remove the noise in the real and imaginary part of the complex interferograms is proposed.基于SAR复干涉图中噪声满足加性噪声模型,提出对复干涉图实部和虚部分别应用小波包软阈值方法的去噪方案。
2.This paper shows that by combining coefficient de-noising and soft thresholding, a lower bound of mean-squared-error can be achieved.软阈值消噪是信号消噪中的标准算法。
3.Donoho抯 soft thresholding method used in wavelet denosing is effective.通常子波域去噪中使用的Donoho软阈值法是很有效的,但是,由于忽略了边缘检测,导致在重构信号时丢失了部分的边缘信息,着眼于上述不足,在非线性多小波变换的基础上,提出了一种边缘检测与软阈值去噪相结合的去噪算法,实验证明此算法对提高重构信号的信噪比是非常有效的。
5)soft and hard threshold软硬阈值
6)semi-soft threshold半软阈值
1.Decomposition and reconstruction formula was given in detail and semi-soft threshold was selected as reconstruction threshold of fast wavelet transform.为了提高光纤陀螺输出信号的精度和实时性,提出了一种适合在数字信号处理器(DSP)上实现的快速算法,该算法不需要传统小波变换中内插和抽取步骤,给出了相应的快速分解和快速重构实现公式,并采用半软阈值作为快速小波变换的重构阈值。
2.Then its coefficients are shrunk by fuzzy clustering with semi-soft threshold for image de-noising.故对超声图像进行平衡正交多小波分解,然后利用模糊聚类与半软阈值相结合方法对小波系数进行萎缩处理,实现降噪目的。
延伸阅读

地理阈值亦称地理临界值。它将地理系统中的不同状态加以分隔与区分,把某一性质的表现范围加以限制和说明。在此种意义上,地理阈值代表了系统的“状态空间”的非连续性。在一般叙述中,常把地理阈值等同于地理系统边界条件,但二者是有区别的:如果两种不同的状态同时存在于相同的边界条件之中时,地理阈值的表现可能是“非传递性”的转移;而当两种不同状态分置于不同的边界条件之中时,地理阈值的表现可能是“过渡性”地转移。无论是非传递性转移的地理阈值,还是过渡性转移的地理阈值,都使地理系统中不可能具备唯一的、通用的或稳定的解。所谓“解”都是有条件的,都是在地理阈值约束下的解。