查询词典 threshold frequency

The first step of this method is to remove the noises of image edge using wavelet modulus maximum's performance in multi-scale and Lipschitz exponent relation,and then adopts dynamic threshold,that is,former scale modulus image's mean modulus is used as next scale's modulus image threshold.Finally,this arithmetic is tested in image databases of cars.

一种改进的小波模极大值不变矩算法，首先利用小波模极大值在多尺度上的表现与Lipschitz指数的关系去除图像边缘的噪声点，然后采用动态确定阈值的方法，利用前一个尺度下模图像的平均模值作为后一个尺度下模图像的阈值，最后将此算法应用于汽车图像库。

Through the analysis of the loss and threshold characteristics of a laser diode, the threshold current density of LD with external feedback is calculated, according to the theory of multi-beam interference and the definition of equivalent reflection factor.

通过对半导体激光器的损耗和阈值电流特性的分析，引入等效反射系数的概念，根据多光束干涉的原理，导出了在外腔反馈作用下LD的阈值电流公式。

With the rules of NDVI 〉 threshold 1 and NLBR 〈 threshold 2, the coastal protective forests of 2005 and 2000 were acquired, in which the thresholds were determined from the scatter plots of NDVI and NLBR.

研究发现，综合利用NDVI大于阈值1和NLBR小于阈值2，可以实现沿海防护林的快速提取，而阈值可以根据NDVI和NLBR的散点图确定。

In order to determine the detection threshold in moving objects extraction, an adaptive detection threshold determination method based on the two-dimensional spatio-temporal entropic principle is proposed.

针对图像序列中运动检测门限的选取问题，提出一种基于二维时空熵准则自适应确定检测门限的新方法。

Differential threshold: The minimal difference that can be detected between two similar stimuli it called the differential threshold, or the just noticeable difference.

差别感受阈限：刚刚能够察觉的刺激物的最小差别量被称为差别感觉阈限，或最小差别感受阈限。

In view of the uncertainty of the settlement of the threshold in the heuristic process mining method proposed by Aalst to deal with the noise data in the log, a method of optimization settlement of threshold based on design of experiment analysis was proposed.

针对处理日志中噪音数据的启发式流程挖掘算法中阈值设置的不确定性，提出了基于试验设计的阈值优化设置方法。

Heaviside function was proposed to create a precise arithmetic model of the threshold gate. The model can describe both the set and reset behavior of the threshold gate.

提出采用Heaviside函数建立可精确描述门限门行为的数学模型，该数学模型可描述门限的置位、复位行为。

So the ultra-low frequency absolute vibration detection is a difficult problem in engineering measurement field. In this paper, the ""high-frequency-suppression and low-frequency-lifting"" compensation method was presented based on the analysis of the inertial sensor with "" mkc "" structure.

本文通过对mkc结构惯性式传感器机理的分析，提出了一种对传感器传递函数进行"抑高扬低"的补偿方法，并对此补偿网络和系统幅频特性进行了优化，较好地克服了惯性式传感器低频特性差的固有缺陷，实现了传感器的微型化。

It is found that traveling waves with either lower frequency or higher frequency can both eliminate the anti-spiral waves, while only the target waves with lower absolute value of frequency can eliminate the anti-spiral waves.

数值计算表明，对于行波，无论是低频行波还是高频行波，都可以成功地消除系统中的反螺旋波；而对于靶波，只有低频靶波才可以消除反螺旋波。

Matlab Toolbox time-frequency analysis, with short-time Fourier transform, Cohen category bilinear time-frequency processing function, Affine category bilinear time-frequency processing function, Fuzzy function and the other handling functions such as source, it should be very useful.

Matlab 时频分析工具箱，含短时傅立叶变换、Cohen类双线性时频处理函数、Affine类双线性时频处理函数、模糊函数和其他处理函数等源码，应该很有用。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。