查询词典 difference threshold

Direct difference is sensitive to noisy data, so a threshold limitation is given, which can not only filter the result from noisy data but also pick edge points up according men's desire. On the other hand, artificial intelligence is used for segmentation in reverse engineering. Because the essence of segmentation is clustering similar characteristics and self-organizing feature mapping is one function of neural network, SOFM network is used for segmentation in the thesis, coordinates and normal of data points is took as the characteristics vector.

第二种方法，基于双向角度微分的边点提取法，针对三维正交模型采用基于截面线的方式组织数据，此方法比基于曲率半径方法更简洁，不用进行曲面拟合，大大提高了计算速度；计算过程中由数据点的直接差分逼近微分，但直接差分对数据误差敏感，为此，本文提出了阈值过滤的方法，一方面过滤了数据误差在计算结果中引起的噪音，另一方面可以按照设计意图控制边点的提取；来决定是否提取光滑交接的边点。

Both forming gas and SiN capping can effectively passivate interface states, and result in threshold voltage difference.

氮氢混合气体退火和具有氮化矽覆盖层的元件都可以有效地修补界面的缺陷，但是二者具有不同的临界电压。

The relationship between the threshold voltage and the peak of proportional difference,and between the interface trap density and stress time are also acquired.

得到了阈值电压和比例差分峰值，界面陷阱密度和应力时间的关系。

By analyzing two SEIS epidemic models with fixed period of latency, one of which is with constant input, another of which is with exponent input, the essential difference between their dynamic behaviors is found. For the model with constant input, the threshold is given.

通过研究两类带有确定潜伏期的SEIS传染病模型，发现对种群的常数输入和指数输入会使疾病的传播过程产生本质的差异。

The threshold voltage and the peak of proportional difference for MOSFET devices will change after the uniform high electric field stress.

在均匀的高电场应力下，MOSFET器件的阈值电压和输出特性的比例差分峰值会有所改变。

It would, therefore, appear that when pain threshold contractions are compared with the submaximal 20% MVC contraction of normal controls, there is a significant difference and can be used as a useful classifier.

因此，正常人的痛域的收缩值和20%的次最大肌肉力量收缩值域患者具有显著性意义，可以用来作为一个鉴别指标。

The Na+ and K+ currents of hippocampal neurons before and after hypoxia-reoxygenation with xionggui diwan pretreatment: Before hypoxia-reoxygenation, the ampli tudes of Ⅰ Na and J K of hippocampal neurons at the threshold point were very similar, without significant difference.

芎归滴丸预处理后缺氧-复氧前后海马神经元的Na+、K+变化：缺氧-复氧前海马神经元Ⅰ Na Ⅰk在阈值处的幅度很接近，差异无显著性意义。

Wavelet multi-resolution analysis is applied to decompose the signal into multiple-level and the wavelet coefficient modules of its high-frequency components are obtained. The wavelet coefficient modules of a broken signal can be extracted by software demising. The threshold of demising is decided by the difference between the wavelet coefficient modules of a broken signal and those of a noise. The wavelet coefficient modules of the broken signal were shown in different levels, then the faults can be detected and distinguished by the integrated features of the variant levels' wavelet coefficient modules.

利用小波多尺度分解技术，将信号进行多尺度的小波分解，得到不同尺度下的信号高频分量的小波系数模值，并根据奇变信号和噪声信号小波系数模值的差异，采用软阈值去噪法，对其高频分量小波系数进行去噪处理，获取不同尺度上突变信号的小波系数模值，实现对故障的检测，并可根据不同尺度上小波系数模值的对应关系，实现对多重并发故障的区分。

The method includes dividing a digital image, formed from M rows and N columns of pixels, into a plurality of band-shaped areas by partitioning at each of a prescribed number of rows; averaging, for each column, the gradation values of pixels in said band-shaped areas for each of said plurality of band-shaped areas; computing an approximation line which approximates, in each of said plurality of band-shaped areas, a distribution of said average of gradation values; and judging whether there exists a succession of d columns at which the difference between said gradation value derived from said approximation line and said average of gradation values for each column exceeds a prescribed threshold.

该方法包括：通过以规定行数为单位进行分割，将由M行N列个像素形成的数字图像划分为多个带状区域；对于所述多个带状区域的每一个，针对各列来对所述带状区域中的像素的浓淡值求平均；计算近似线，该近似线在所述多个带状区域的每一个中近似于所述浓淡值的平均值的分布；并且判断是否存在如下连续的d个列，在所述连续的d个列中，从所述近似线得到的所述浓淡值与针对各列的所述浓淡值的平均值之间的差值超出一指定阈值。

Object detecting method based on background image difference using dynamic threshold .

基于动态阈值背景差分算法的目标检测方法。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。