1) improved thresholding
改进阈值
1.
This paper aimed at the ultrasonic signal polluted by noises, which is low in SNR, put forward a method of the ultrasonic signal de-noising in wavelet domain based on a new kind of an improved thresholding function, and by the simulated test, proved this method can get a remarkable effect in signal de-noising.
本文针对超声无损检测中超声信号受噪声污染、信噪比不高的情况,提出了一种新的基于改进阈值函数的小波域超声信号去噪方法,并通过仿真实验。
2.
This paper aimed at the ultrasonic signal polluted by noises, which is low in SNR, put forward a method of the ultrasonic signal de-noising in wavelet domain based on a new kind of an improved thresholding function, and by the simulated test, it can get a remarkable effect in the signal denoising of the connect bolt ultrasonic testing in the light rail when using this method.
本文针对超声无损检测中超声信号受噪声污染、信噪比不高的情况,提出了一种新的基于改进阈值函数的小波域超声信号去噪方法,并通过仿真实验,将该方法用于轻轨锚固螺杆超声检测中信号去噪,能够取得良好的效果,相对于经典的阈值函数,改进的阈值函数在此类超声信号去噪中更具有优势。
2) modified threshold
改进阈值法
1.
Considering that adopting singular image process will be constrained in its limitedly applicable scope,some time,even not get the deserved outcome,we propose modified threshold for feature extraction of tyre wear texture in this paper.
考虑到采用单一图像处理方法,会因自身的适用范围而有所局限,甚至有时得不到相应的结果,提出了改进阈值法来提取轮胎磨损纹理特征。
3) improved wavelet threshold
改进的小波阈值
1.
Instantaneous information extraction by improved wavelet threshold method.;
改进的小波阈值法瞬时信息提取
4) modified multilevel threshold
改进多层阈值
1.
Ultrasound image de-noising using modified multilevel threshold
利用多小波的改进多层阈值对超声图像降噪
5) improved threshold function
改进阈值函数
1.
The translation-invariant de-noising method based on improved threshold function was therefore studied to de-noise the body fluttering signal.
体震信号微弱,受仪器、环境因素等方面的影响,常常含有大量噪声,研究一种基于改进阈值函数的平移不变法用于体震信号的去噪。
6) improved wavelet threshold de-noising
改进小波阈值消噪
补充资料：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。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条