运动阈值

本研究分成三部分（1）探讨高频脊髓刺激（500Hz）是否影响运动阈值，并且与常规使用频率（50Hz）相比作用强弱，能否增加血管扩张，降低血管阻力。

The current study divided three parts : ( 1 ) To determine whether SCS at high frequency ( 500 Hz ) will affect the threshold , increase vasodilation and decrease vascular resistance compared with lower frequency ( 50 Hz ) .

算法的改进主要在两个方面：引进了零运动阈值；采用自顶向下逐步细化的搜索算法。

Using the zero motion thresholds and top-to-bottom block match algorithm , the traditional block-matching algorithm is improved .

为了消除随机噪声带来的影响，将其引起DCT系数块符号变化数目模型化为高斯分布，以此确定运动块阈值。

In order to eliminate the impact imposed by random noise , the number of DCT coefficient sign changes caused by the noise is modeled as Gauss distribution , which can determine a threshold of motion blocks .

实验结果表明，在不同的量化矩阵、不同的运动块阈值下，均能实现正确的检测。

Experiments show accurate motion detection can be achieved under different quantization matrixes and / or different motion blocks thresholds . 2 .

首先根据HOS假设检验处理帧差图，判定像素点是否属于运动区域，阈值通过灰度共生矩阵获得，考虑了背景纹理的慢变化。

Additionally , the threshold is found by gray level co-occurrence matrix considering the background texture change .

利用Melnikov方法，通过计算扰动系统的Melnikov积分，分析了系统在参数发生变化时的同宿分岔，得出系统产生混沌运动的参数阈值，并讨论了有界噪声激励对系统的混沌运动的影响。

Using the Melnikov method , the system 's Melnikov integral is computed and the parametric threshold for chaotic motions is obtained . Then the system 's homoclinic bifurcation is analyzed and the effects of bounded noise on chaotic motions are also discussed .

第二章：从理论上介绍了准位相匹配三共振光学参量振荡器的经典特性：包括它的运动方程、阈值、输出功率和调谐特性。

2 ) The classical characteristics of quasi-phase-matched triply resonant optical parametric oscillator ( TROPO ) are theoretically analyzed .

其基本思想是：利用二次帧差求交集得到单帧的运动信息；阈值化得到帧差掩模图像；

The basic idea of the method is : frame mask image can be achieved with a threshold from moving information got by intersections of twice frame difference images .

该模型中的条件均值部分能够合理地描述汇率运动中的阈值行为，而条件方差部分能够解释汇率的波动特征。

In the end , the model is extended to describe the behavior of exchange rates under the middle exchange rate regimes , from which characteristics of managing exchange rates are inferred .

根据彩色差值模型计算当前帧图像和当前逼近背景图像的差分图像；并引入Gauss模型实现了运动目标的自适应阈值分割。

Moreover , the difference image is obtained by using a color image difference model , and then a self-adaptive thresholding segmentation method for moving objects detection based on Gauss model is developed and implemented .

在确定遮挡发生的情况下，采取增加可容忍连续帧数的方法，只预测、修正目标运动状态，同时阈值更新目标特征模板保持对目标的连续跟踪。

That is sure of occlusion , an method is presented by increasing successive frames can be tolerated , in which keeping continuous tracking of targets by only prediction and correction the motion state of object while updating features template by threshold .

利用TMS技术我们可以采集到一些神经系统电生理学信息例如运动诱发电位，运动阈值（motorthreshold，MT）等，这些参数可以很有效的预测脑血管疾病。

We can collect some important electro-physiology information of the nervous system by using TMS technology , such as MEP , motion threshold ( motor threshold , MT ), which can help us to predict cranial vascular disease .

针对在线手眼标定算法的鲁棒性，提出了一种根据运动序列的特点自动设定运动选择阈值的在线手眼标定算法。

An adaptive motion selection algorithm for online hand-eye calibration was presented .

最后以校准帧最大的运动块数作为确定当前帧是否存在运动的阈值。

At last , the biggest number of motion blocks of a frame in the calibration stage is used as a threshold of motion frames .