threshold operation

Background subtraction is a commonly used moving objects detection method, it subtracts the background model which is stored beforehand or observed in time from the current frame, by threshold operation getting moving objects.

减背景技术是一种常用的运动对象检测方法，其基本思想是将视频中当前帧图象与事先存储的或实时得到的背景模型相减，通过阈值操作，得出运动区域。

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After the threshold operation, morphologic operation and connected region area measurement are introduced to solve the background disturbance problem.

减背景操作后，用形态学方法和检测连通域面积进行后处理，消除噪声和背景扰动带来的影响；

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Evaluation of the Position of Thoracolumbar Pedicle Screw with Different Image Method after the Operation Study of the model between galvanic threshold of intraoperative evoked electromyography monitoring and position of the pedicle screws

应用不同影像学检查方法评估椎弓根螺钉位置的研究诱发肌电图刺激电流阈值与螺钉位置关系模型研究

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The slight pressure injury simulated by Instron texture instrument could be detected through the Otsu threshold segmentation, expansion operation and boundary extraction and the corner detection of the fruit image.

对于采用万能试验机模拟的轻微压伤，通过Otsu阈值分割、膨胀操作并提取边界的图像处理方法，最后对水果边界进行角点检测。

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This paper analyzes threshold priority's operation and establishes a mathematic model with the theory of queue.

该文运用了排队理论对门限优先的业务进行了分析，建立了数学模型。

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The vibration sensibility of hard disk driver ( HDD) is introduced, after analyzing the damage mechanism of HDD due to vibration, the threshold in instantaneous operation damage criterion of HDD under vibration environment is experimentally determined.

介绍了计算机硬盘驱动器的振动敏感性，分析了硬盘驱动器在振动环境下失效的机理，通过实验测定了硬盘驱动器振动环境下的短时工作失效判据中阈值[w]。

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Under Windows circumstance and by use of Visual C++ 6.0 program language, the wavelet packet filtering algorithm with soft threshold operation is realized.

在Windows环境下，采用Visual c++6.0编程实现了小波包软阈值算法。

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This paper introduces an image processing method that different from traditional image area segment. This method performs threshold operation to binary image for getting image area segment.

介绍了一种与传统的图像区域分割方法不同的图像处理方法，这种方法通过对二值图像进行各种阈值运算来实现图像区域的分割。

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Via the threshold operation on wavelet packet transform of images, Gauss color noise can be better filtered, yet there is usually many impulse noise in the images.

通过对图像的子波包变换进行阈值操作，可以较好地滤除高斯白噪声，但图像中往往还含有脉冲噪声，运用中值滤波可以有效地滤除脉冲噪声。

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Low threshold operation in a semi-concentric resonator was obtained.

采用准半共心腔获得低阈值运转。

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Simulation results show that using CGA to find optimal threshold can save more operation time than GA and improve convergence probability.

实验结果表明，与遗传算法相比，混沌遗传算法用于阈值寻优减少了运算时间，提高了收敛率。

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A threshold operation in which each operand is 0 or 1; output is 1 if and only if more than half the operands have the value 1.

每个操作数只能取或的一种阈值操作；当且仅当超过一半的操作数取值为时结果值为。

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After segmenting the image by a threshold, open operation is used to smooth image.

在对图像进行二值化后，利用不明显改变焦块信息面积的开运算进一步去造。

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Diagnostic Value of Ultrasonography for Observing Endometrial Thickness and Three-line Pattern in Ectopic Pregnancy Expression of substance P in endometrium from endometriosis model rats and the changes of pain threshold before and after operation

超声子宫内膜厚度及三线征变化在宫外孕诊断中的价值P物质在子宫内膜异位模型大鼠子宫内膜组织中的表达及造模前后痛阈的变化

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The Threshold Condition of Self-Pulsing Operation for Two-Photon Lasers

双光子激光器自脉冲运转的阈值条件

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Using a simple chaotic system and another chaotic system based on linear system with a piecewise linear state feedback, we put the two sequences through threshold function and XOR operation. The result we get is an unpredictable pseudo-random sequence.

通过把简单混沌系统与线性系统、分段线性状态反馈函数所形成的混沌系统在阈值化后进行异或运算，使得输出的密钥流为不可预测性的伪随机序列。

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The rate equation was solved to analyze the influence of upconversion effect to the output power, slope efficiency and threshold power in CW operation and the pulse energy, pulse width and peak power in Q-switched operation.

通过速率方程的求解模拟分析了上转换效应对连续运转Ho激光器输出功率、斜率效率和阈值功率的影响以及对调Q运转Ho激光器单脉冲能量、脉冲宽度和峰值功率的影响。

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For higher extraction efficiency and low threshold operation to the quasi-three level laser system, the Tm, Ho ∶ YLF crystal is cooled by liquid nitrogen reserved in a small detector type dewar, and works at the temperature of 77 K.

为降低准三能级系统激光器阈值，提高激光脉冲能量抽取效率，Tm，Ho∶YLF晶体采用液氮制冷方式，工作在77K温度条件下。

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Expression of substance P in endometrium from endometriosis model rats and the changes of pain threshold before and after operation

P物质在子宫内膜异位模型大鼠子宫内膜组织中的表达及造模前后痛阈的变化

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A logic element that performs a threshold operation.

能够进行开端操作的逻辑元件。

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