A new texture feature extraction method using Local Walsh Transform (LWT) is presented. The definition of LWT is given. The statistical properties of LWT coefficients are analyzed.
介绍了一种利用局部沃尔什变换(LWT)提取图像纹理特征的新方法，给出lwt的定义，并分析了LWT系数的统计特性及其各阶矩的纹理鉴别性能。
For the regions in image where gray value is high or change intensely, local mean value and variance is adopted to control enhancement coefficients.
针对图像中的高灰度区和灰度剧变区，应用图像局部均值和方差自适应调节增强系数。
The formula of computing variance and covariance among local filtering errors is presented, which is applied to obtain the optimal weighting coefficients.
提出了用于得到最优加权系数的局部滤波误差方差和协方差计算公式。
In high Reynolds number range of 10,000 ~ 90,000, the flow friction factor, local and average convection heat transfer coefficients were determined.
在10,000 ~ 90,000的高雷诺数范围内，测量了流动摩擦系数、局部和平均对流换热系数。
Moreover, wa have calculated some sets of local bump orbit coefficients with the matrix elements, with which a local beam orbit correction has been successfully carried out.
并利用最小二乘法计算得到三个校正铁的凸轨系数，用于束流闭轨的局部凸轨校正，取得了预期的效果。
During the hydraulic calculation on pipeline network, it is unacceptable to neglect local energy loss or to adopt constant local energy loss coefficients.
进行管网水力计算时，忽略结点处的局部能量损失或采用不变的局部能量损失系数均是不合适的。
For regions with high grey-scale level or with tensely variable grey level, the image enhancement coefficients shall be adaptively controlled based on local mean value and variance.
针对图像中的高灰度区和灰度剧变区，应用图像局部均值和方差自适应调节增强系数。
The aerodynamic coefficients such as the normal force, axial force, and the pitching moment of the ve-hide computed by the local method are in good agreement with the experimental data.
由此计算出飞行器的法向力、轴向力和俯仰力矩系数，计算结果与实验数据相符。
The results show that local heat transfer coefficients and their radial profiles are obviously influenced by the vertical length of the heat probes.
实验结果表明，换热元件的长度对其传热系数的大小及传热系数的径向分布均产生显著影响。
The effects of various operating parameters on the local heat transfer coefficients are obtained.
研究结果得到操作参数对床内局部换热系数的影响规律。
Methods and formulations for calculating local flow boiling heat transfer coefficients of pure refrigerants inside horizontal tubes are compared and analyzed in this paper.
对纯质水平管内局部沸腾换热系数的计算方法及计算公式进行了分析比较，筛选出了与实验数据吻合较好的计算公式。
Because of large temperature differences in some local tubes and different expansion coefficients, large stresses of temperature difference are produced and brings about cracking in tubes.
热冲击是由于炉管在某些部位温度变化大，炉管和结焦物的热膨胀系数不同，而产生较大的温差应力，使炉管产生裂纹。
The new method to determine the optimal information sharing coefficients gives the optimal local filter design, so it improves soft-fault detection sensitivity.
信息分配系数确定的新方法由于实现了联邦滤波器局部滤波的最优性，从而提高了软故障检测灵敏度。
A new method is developed for measurement of local heat transfer coefficients around horizontal tubes immersed in an aerated vibrated fluidized bed.
提出了测试振动流化床与浸没水平管局部传热系数的新方法，就通气振动流化床与浸没水平管间的局部传热特性进行了实验研究。
It is performed by introducing the local gradient into local energy and then selecting the low frequency coefficients according to the type and the vale of match measures.
该融合策略首先在区域能量的基础上引入区域梯度，然后根据匹配度的类型和测量值进行小波低频系数的选取。
The two coefficients reflect overall random variation and local random variation of ore body respectively.
文章最后，根据这两个指标对矿体的变化性质作了初步分类。
Second, the wavelet coefficients are reconstruct based on the top few principle components and the local noise energy is estimated based on the mean energy of reconstructed wavelet coefficients;
然后以主分量对小波系数进行重建的平均能量作为局部噪声能量的估计；
It is also found that the local heat transfer coefficients of horizontal tube exhibit a general tendency to increase with decreasing particle size.
振动流化床水平换热管的传热系数随颗粒粒径的增大而减小。
It is also found that the local heat transfer coefficients of horizontal tube exhibit a general tendency to increase with decreasing particle size.
振动流化床水平换热管的传热系数随颗粒粒径的增大而减小。
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