查询词典 second derivative
- 与 second derivative 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The second time derivative is the constant acceleration.
它的二阶导数就是这个恒加速度。
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However, the smoothness and convergence of these methods are not satisfactory. Because cubic spline function can be a piecewise, and its second order derivative is continuous, it is smooth and convergent.
但以上算法的光滑性和收敛性不好,而三次样条函数具有连续的二阶导数,且可采用分段函数的形式,具有很好的光滑性和收敛性。
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The second part has summarized from the one-dimension and multivariate respects the abundant approximation properties of Bernstein polynomials, mainly including the estimation of approximation degree, derivative approximation, linear combination approximation and weighted approximation.
第二部分从一元和多元两个方面系统总结了Bernstein算子丰富的逼近性质,主要包括逼近度估计、导数逼近、线性组合逼近和加权逼近等。
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The second is a derivative of the first, which is to trade more than one lot.
第二种方法是第一种方法的衍生,涉及两次交易以上的情况。
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A new structure tensor integrating the second-order directional derivative information is designed, which can precisely analyze complex weak edges in the image.
摘要一致性扩散是分析图像中定向结构的重要的预处理步骤,现有的一致性扩散图像增强方法难以识别图像中的弱边界。
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By Code extraction method is to investigate the edge of each image pixel in a neighborhood Gray-scale changes in the region, using the edge of the neighboring first-order or second-order directional derivative Changes of a few simple ways to detect the edge.
经 典的边缘提取方法是考察图像的每个像素在某个邻域内灰度的变化,利用边缘邻近一阶或二阶方向导数变化规律,用简单的方法检测边缘。
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A algorithm of dim small targets detection in infrared image is proposed. Image is processed by using median filter and unsharp mask. The infrared image intensity surface is fitted by Haralickd discrete orthogonal polynomial basis function,and then the maximum points are detected on the fitted intensity surface by convolving the image with the second order directional derivative operators.
提出一种红外弱小多目标图像检测方法,图像先经过中值滤波、高提升滤波增强处理,再用基于Haralick离散正交多项式曲面拟合图像,拟合曲面的极大值点即目标点,可以利用导出的二阶方向导数算子与图像进行卷积得到。
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By the procedure, we first use the cosine values of the angle between view vector and normal vector on each vertex as the texture coordinates, through calculation of the dot product of the two vectors. The derivative of radial curvature on the model surface is used as the second pass texture mapping coordinates, by a calculation using Euler formula.
该方法首先通过模型顶点的视线向量和法线向量的点乘积计算其夹角的余弦值,作为第一步的纹理坐标进行映射;再通过欧拉公式计算径向曲率及其方向导数值,作为第二步映射的纹理坐标。
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Taking the first boundary condition as an example, it used the second order derivative of the junctions to represent the cubic spline interpolation function, and solved the relative equations with chasing method.
以第1边界条件为例,用节点处二阶导数表示三次样条插值函数,用追赶法求解相关方程组。
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Using difference method, the first-order and the second-order differential equations of fractional derivative can become the first-order ordinary differential equation, and the high precision direct integration can be used for the solution.
所论方法首先引入差分格式,将含有分数阶导数的一阶和二阶微分方程变为一阶的常微分方程,然后再用精细积分方法逐步积分进行求解。
- 推荐网络例句
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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).
呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。
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The cost of moving grain food products was unchanged from May, but year over year are up 8%.
粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。
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However, to get a true quote, you will need to provide detailed personal and financial information.
然而,要让一个真正的引用,你需要提供详细的个人和财务信息。